===== PAGE 1 ===== ERIC HALPERT PE DRAINAGE NARRATIVE # STORMWATER MANAGEMENT REPORT (SWMR) PRELIMINARY AND FINAL MAJOR SUBDIVISION BLOCK 20101 LOTS 29 & 30 102 SAMS ROAD TOWNSHIP OF JACKSON OCEAN COUNTY, NEW JERSEY PREPARED ON OCTOBER 06, 2025 Eric Halpert PE Professional Engineer 640 Herman Road Unit 1, Jackson, New Jersey 08527
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===== PAGE 2 ===== ## Table of Contents Existing Conditions.....1 Soils.....1 Proposed Conditions .....1 Stormwater Management System.....1 Water Quality.....2 Water Quantity.....2 Groundwater Recharge.....2 Groundwater Mounding.....3 Storm Sewers.....3 Soil Erosion and Sediment Control.....3 Conclusion.....3 ## Appendices Appendix A – Existing Conditions Analysis Appendix B – WQ Analysis Appendix C – Proposed Conditions Analysis Appendix D – Storm Sewer Calculations Appendix E – Conduit Outlet Calculations Appendix F – SCD Analysis Appendix G – GW Mounding Calculations Appendix H – Soils Appendix I – DA Maps ===== PAGE 3 ===== ## Existing Conditions The subject property is located almost at the end of Sams Road. The site contains one building with a gravel driveway providing access to Sams Road, a woodland or heavy vegetation area with some dirt roads crossing the property. The site exhibits environmental constraint in the southernmost corner of the property. Runoff from the site flows to the rear site of the lot (POA). ## Soils Based on the NRCS Soil Survey the site is mapped as Downer Loamy Sand, Mullica Sandy Loam and Sassafras sandy loam (HSG A). Preliminary Soil evaluations were conducted on the site including test pits and field percolations tests. The site had a tested permeability rate ranging from 12.2 and 14.5 inches/hr which results in a design permeability rate ranging from 6.1 and 7.25 in/hr. Groundwater table or signs of SHWT were encountered at 7.1 feet below grade (el. 89.0). Test pit logs and infiltration test results are included in the appendix. Additional soil testing shall be undertaken as part of resolution compliance. ## Proposed Conditions The applicant proposes to construct a Major Subdivision, along with associated site improvements such as new roadway, landscape, lighting, and stormwater management. ## Stormwater management system The stormwater management system consists of 2 surface infiltration basins and individual subsurface basins for each dwelling. Surface runoff from the site is partially directed to the 2 surface basins for water quality treatment and attenuation. Runoff from remaining woodland area of the property is not captured in the proposed stormwater facilities. Each proposed roof runoff is directed to the individual lot subsurface basin. An outlet control structure is proposed in each surface basin which will direct runoff in excess of the water quality storm via a 15" (Surface #1) and 6" (Surface #2) outlet pipe to convey excess runoff beyond required reductions to a swale near the property limit. The system was routed using HydroCAD software for the 2, 10, 25, and 100 year events. Calculations are included in the appendix. ===== PAGE 4 ===== ## Water quality Water quality treatment is provided for all proposed motor vehicle surfaces by the surface infiltration basins. A surface infiltration basin is considered green infrastructure and provides 80% TSS Removal. The basins will have a six inch sand layer and a maximum water quality storm depth of 0.61 and 0.70 feet which is below the maximum 2 foot depth allowed by the NJDEP BMP manual. The individual drainage areas to the systems for each lot are less than 2.5 acres and therefore meet the small scale requirements. Roof runoff which does not require water quality treatment, will be conveyed directly to the subsurface system. ## Water Quantity Water quantity will be met by meeting the runoff reduction requirements to the point of analysis as demonstrated in the table below and the HydroCAD calculations in the appendix. Note that infiltration was included in the water quantity routing as allowed by the NJDEP BMP Manual. The roof runoff does not require pretreatment.
POA
Storm EventExisting Peak Runoff (cfs)Required Reduction (%)Allowable Peak Runoff (cfs)Proposed Peak Runoff (cfs)
21.08500.540.43
101.71751.280.67
1003.02802.422.36
## Groundwater recharge Groundwater recharge is provided by infiltrating the increase in 2 year runoff from the site. Existing 2 year runoff – 3,958 cf Proposed 2 year runoff (post infiltration) – 1394 cf ===== PAGE 5 ===== ## Green Infrastructure The intent of the green infrastructure requirement is to mimic the natural hydrologic cycle. To do so, the rules require stormwater water runoff to be treated near the source with distributed and small-scale (limited contributory drainage area) green infrastructure BMPs. Small-scale GI BMPs are achieved through the contributory drainage area limitations. The proposed BMP's are considered green infrastructure under BMP manual 9.2 Dry Wells and 9.8 Small Scale infiltration basins. ## Groundwater Mounding A groundwater mounding analysis was performed to confirm that the ground water mound associated with the infiltration basins will not impact the operation of the basins. As the basins are designed to infiltrate the 100 year storm events the mounding analysis was performed based on the full 100 year exfiltration volume. Separate mounding analysis were performed for the surface basin, and of the subsurface basin. The highest SHWT of 89.0 was utilized for groundwater mounding calculations
BasinMound HeightPeak Mound elevationbasin bottom elevation
Surface #15.90194.90195.00
Surface #21.94190.94191.00
Subsurface ( LOT 30.08)1.30990.30990.50
## Storm Sewers The storm sewers were designed to convey the 25-year storm event. Storm sewers were sized using the rational method and manning equation. See appendix for calculations. ## Soil Erosion and Sediment Control Soil erosion and sediment control measures are incorporated into the design including silt fence, inlet protection, and stabilized construction access A scour hole has been designed for the outfall into the basin in accordance with the methods prescribed in the Standards for Soil Erosion and Sediment Control in New Jersey. Downstream stability is met by meeting peak flow reductions. For point of discharge stability analysis, a failure analysis has been performed assuming the surface infiltration basin does not function and is full to the lowest orifice. The proposed basin(s) discharge to a proposed bubbler outlet which represents a stable discharge ## Conclusion The stormwater management system has been designed to manage the increase in runoff associated with the proposed development. The design conforms to the Township, NJDEP, and Soil Conservation District standards. ===== PAGE 6 ===== ## APPENDIX A ===== PAGE 7 =====
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EXISTING
DA E3 (Impervious)
===== PAGE 8 ===== ## Area Listing (selected nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
1,87398Paved parking, HSG A (124S)
8,36498Unconnected pavement, HSG A (124S)
4,66698Unconnected roofs, HSG A (142S)
558,77730Woods, Good, HSG A (118S)
573,68032TOTAL AREA
===== PAGE 9 ===== Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 118S: DA E1 (Pervious) Runoff Area=558,777 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=1,241' Tc=60.4 min CN=30/0 Runoff=0.00 cfs 0 cf Subcatchment 124S: DA E3 (Impervious) Runoff Area=0.235 ac 18.30% Impervious Runoff Depth=3.19" Flow Length=195' Tc=1.6 min CN=98/98 Runoff=0.82 cfs 2,718 cf Subcatchment 142S: DA E2 (Roof) Runoff Area=4,666 sf 0.00% Impervious Runoff Depth=3.19" Tc=6.0 min CN=98/0 Runoff=0.28 cfs 1,239 cf Link 141L: POA Inflow=1.08 cfs 3,958 cf Primary=1.08 cfs 3,958 cf Total Runoff Area = 573,680 sf Runoff Volume = 3,958 cf Average Runoff Depth = 0.08" 99.67% Pervious = 571,807 sf 0.33% Impervious = 1,873 sf ===== PAGE 10 ===== # Summary for Subcatchment 118S: DA E1 (Pervious) Runoff = 0.00 cfs @ 0.00 hrs, Volume= Routed to Link 141L : POA 0 cf, Depth = 0.00 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
558,77730Woods, Good, HSG A
558,77730100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
30.81000.00750.05Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps
29.61,1410.01650.64
60.41.241Total
60.4 1,241 Total
Subcatchment 118S: DA E1 (Pervious)
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0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 11 ===== # Summary for Subcatchment 124S: DA E3 (Impervious) Runoff = 0.82 cfs @ 12.10 hrs, Volume= 2,718 cf, Depth= 3.19" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (ac)CNDescription
0.19298Unconnected pavement, HSG A
0.04398Paved parking, HSG A
0.23598Weighted Average
0.1929881.70% Pervious Area
0.0439818.30% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
1.21000.02001.42Sheet Flow,
0.4950.04754.42Smooth surfaces n= 0.011 P2= 3.42"
Shallow Concentrated Flow,
Paved Kv= 20.3 fps
1.6105Total
1.6 195 Total
Subcatchment 124S: DA E3 (Impervious)
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0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 12 ===== # Summary for Subcatchment 142S: DA E2 (Roof) Runoff = 0.28 cfs @ 12.14 hrs, Volume= 1,239 cf, Depth= 3.19" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
4,66698Unconnected roofs, HSG A
4,66698100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,
Subcatchment 142S: DA E2 (Roof)
Hydrograph
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4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 13 ===== ## Summary for Link 141L: POA Inflow Area = 573,680 sf, 0.33% Impervious, Inflow Depth = 0.08" for 2-Year event Inflow = 1.08 cfs @ 12.10 hrs, Volume = 3,958 cf Primary = 1.08 cfs @ 12.10 hrs, Volume = 3,958 cf, Atten = 0%, Lag = 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 141L: POA
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===== PAGE 14 ===== Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 118S: DA E1 (Pervious) Runoff Area=558,777 sf 0.00% Impervious Runoff Depth=0.02" Flow Length=1,241' Tc=60.4 min CN=30/0 Runoff=0.04 cfs 985 cf Subcatchment 124S: DA E3 (Impervious) Runoff Area=0.235 ac 18.30% Impervious Runoff Depth=5.14" Flow Length=195' Tc=1.6 min CN=98/98 Runoff=1.30 cfs 4,387 cf Subcatchment 142S: DA E2 (Roof) Runoff Area=4,666 sf 0.00% Impervious Runoff Depth=5.14" Tc=6.0 min CN=98/0 Runoff=0.45 cfs 2,000 cf Link 141L: POA Inflow=1.71 cfs 7,372 cf Primary=1.71 cfs 7,372 cf Total Runoff Area = 573,680 sf Runoff Volume = 7,372 cf Average Runoff Depth = 0.15" 99.67% Pervious = 571,807 sf 0.33% Impervious = 1,873 sf ===== PAGE 15 ===== # Summary for Subcatchment 118S: DA E1 (Pervious) Runoff = 0.04 cfs @ 24.15 hrs, Volume= 985 cf, Depth= 0.02" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
558,77730Woods, Good, HSG A
558,77730100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
30.81000.00750.05Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps
29.61,1410.01650.64
60.41,241Total
60.4 1,241 Total
Subcatchment 118S: DA E1 (Pervious)
Hydrograph
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===== PAGE 16 ===== # Summary for Subcatchment 124S: DA E3 (Impervious) Runoff = 1.30 cfs @ 12.10 hrs, Volume= 4,387 cf, Depth= 5.14" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (ac)CNDescription
0.19298Unconnected pavement, HSG A
0.04398Paved parking, HSG A
0.23598Weighted Average
0.1929881.70% Pervious Area
0.0439818.30% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
1.21000.02001.42Sheet Flow,
0.4950.04754.42Smooth surfaces n= 0.011 P2= 3.42"
Shallow Concentrated Flow,
Paved Kv= 20.3 fps
1.6195Total
1.6 195 Total
Subcatchment 124S: DA E3 (Impervious)
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0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 17 ===== # Summary for Subcatchment 142S: DA E2 (Roof) Runoff = 0.45 cfs @ 12.14 hrs, Volume= 2,000 cf, Depth= 5.14" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
4,66698Unconnected roofs, HSG A
4,66698100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,
Subcatchment 142S: DA E2 (Roof)
Hydrograph
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4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 18 ===== ## Summary for Link 141L: POA Inflow Area = 573,680 sf, 0.33% Impervious, Inflow Depth = 0.15" for 10-Year event Inflow = 1.71 cfs @ 12.10 hrs, Volume = 7,372 cf Primary = 1.71 cfs @ 12.10 hrs, Volume = 7,372 cf, Atten = 0%, Lag = 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 141L: POA
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===== PAGE 19 ===== Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 118S: DA E1 (Pervious) Runoff Area=558,777 sf 0.00% Impervious Runoff Depth=0.82" Flow Length=1,241' Tc=60.4 min CN=30/0 Runoff=1.56 cfs 38,329 cf Subcatchment 124S: DA E3 (Impervious) Runoff Area=0.235 ac 18.30% Impervious Runoff Depth=9.24" Flow Length=195' Tc=1.6 min CN=98/98 Runoff=2.30 cfs 7,882 cf Subcatchment 142S: DA E2 (Roof) Runoff Area=4,666 sf 0.00% Impervious Runoff Depth=9.24" Tc=6.0 min CN=98/0 Runoff=0.79 cfs 3,593 cf Link 141L: POA Inflow=3.02 cfs 49,803 cf Primary=3.02 cfs 49,803 cf Total Runoff Area = 573,680 sf Runoff Volume = 49,803 cf Average Runoff Depth = 1.04" 99.67% Pervious = 571,807 sf 0.33% Impervious = 1,873 sf ===== PAGE 20 ===== # Summary for Subcatchment 118S: DA E1 (Pervious) Runoff = 1.56 cfs @ 13.82 hrs, Volume= 38,329 cf, Depth= 0.82" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
558,77730Woods, Good, HSG A
558,77730100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
30.81000.00750.05Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps
29.61,1410.01650.64
60.41.241Total
60.4 1,241 Total
Subcatchment 118S: DA E1 (Pervious)
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===== PAGE 21 ===== # Summary for Subcatchment 124S: DA E3 (Impervious) Runoff = 2.30 cfs @ 12.10 hrs, Volume= 7,882 cf, Depth= 9.24" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (ac)CNDescription
0.19298Unconnected pavement, HSG A
0.04398Paved parking, HSG A
0.23598Weighted Average
0.1929881.70% Pervious Area
0.0439818.30% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
1.21000.02001.42Sheet Flow,
0.4950.04754.42Smooth surfaces n= 0.011 P2= 3.42"
Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.6195Total
1.6 195 Total
Subcatchment 124S: DA E3 (Impervious)
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24681012141618202224262830323436384042444648505254565860626466687072Time (hours) ===== PAGE 22 ===== # Summary for Subcatchment 142S: DA E2 (Roof) Runoff = 0.79 cfs @ 12.14 hrs, Volume= 3,593 cf, Depth= 9.24" Routed to Link 141L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
4,66698Unconnected roofs, HSG A
4,66698100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry
Direct Entry,
Subcatchment 142S: DA E2 (Roof)
Hydrograph
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4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 23 ===== ## Summary for Link 141L: POA Inflow Area = 573,680 sf, 0.33% Impervious, Inflow Depth = 1.04" for 100-Year event Inflow = 3.02 cfs @ 12.10 hrs, Volume = 49,803 cf Primary = 3.02 cfs @ 12.10 hrs, Volume = 49,803 cf, Atten = 0%, Lag = 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 141L: POA
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===== PAGE 24 ===== ## APPENDIX B ===== PAGE 25 =====
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WQ
173S DA P4 (Pervious) DA P1 (Impervious) 174P WQ Infiltration Basin #1 176S DA P3 (Pervious) WQ Infiltration Basin #2 175S DA P2 (Impervious) Subcat Pond Link Routing Diagram for 102 Sams -REV 12-02-25 Prepared by Haler Consulting, Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC ===== PAGE 26 ===== ## Area Listing (selected nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
139,94439>75% Grass cover, Good, HSG A (173S, 176S)
55,09598Paved parking, HSG A (171S, 175S)
195,03956TOTAL AREA
===== PAGE 27 ===== Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 171S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=1.03" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=2.10 cfs 2,727 cf Subcatchment 173S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.00 cfs 0 cf Subcatchment 175S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=1.03" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=1.38 cfs 2,023 cf Subcatchment 176S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.00 cfs 0 cf Pond 174P: WQ Infiltration Basin #1 Peak Elev=95.61' Storage=2,726 cf Inflow=2.10 cfs 2,727 cf Discarded=0.00 cfs 0 cf Primary=0.00 cfs 0 cf Outflow=0.00 cfs 0 cf Pond 177P: WQ Infiltration Basin #2 Peak Elev=91.70' Storage=2,023 cf Inflow=1.38 cfs 2,023 cf Discarded=0.00 cfs 0 cf Primary=0.00 cfs 0 cf Outflow=0.00 cfs 0 cf Total Runoff Area = 195,039 sf Runoff Volume = 4,750 cf Average Runoff Depth = 0.29" 71.75% Pervious = 139,944 sf 28.25% Impervious = 55,095 sf ===== PAGE 28 ===== # Summary for Subcatchment 171S: DA P1 (Impervious) Runoff = 2.10 cfs @ 1.09 hrs, Volume= 2,727 cf, Depth= 1.03" Routed to Pond 174P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP Rainfall=1.25"
Area (sf)CNDescription
31,62598Paved parking, HSG A
098Unconnected pavement, HSG A
098Unconnected pavement, HSG A
098Paved parking, HSG A
098Unconnected pavement, HSG A
31,62598Weighted Average
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
1.21000.0200 1.42
1.83500.0250 3.21
3.0450Total
Subcatchment 171S: DA P1 (Impervious)
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===== PAGE 29 ===== # Summary for Subcatchment 173S: DA P4 (Pervious) Runoff = 0.00 cfs @ 0.00 hrs, Volume=0 cf, Depth=0.00" Routed to Pond 174P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP Rainfall=1.25"
Area (sf)CNDescription
76,97139>75% Grass cover, Good, HSG A
76,97139100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
12.51000.01000.13Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3960.01000.70Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8196Total
Subcatchment 173S: DA P4 (Pervious)
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===== PAGE 30 ===== # Summary for Subcatchment 175S: DA P2 (Impervious) Runoff = 1.38 cfs @ 1.11 hrs, Volume= 2,023 cf, Depth= 1.03" Routed to Pond 177P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP Rainfall=1.25"
Area (sf)CNDescription
23,47098Paved parking, HSG A
098Unconnected pavement, HSG A
098Unconnected pavement, HSG A
098Paved parking, HSG A
098Unconnected pavement, HSG A
23,47098Weighted Average
23,47098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)
0.81000.05002.05
4.13500.00501.44
4.9450Total
Subcatchment 175S: DA P2 (Impervious)
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===== PAGE 31 ===== # Summary for Subcatchment 176S: DA P3 (Pervious) Runoff = 0.00 cfs @ 0.00 hrs, Volume=0 cf, Depth=0.00" Routed to Pond 177P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NJ DEP 2-hr NJDEP Rainfall=1.25"
Area (sf)CNDescription
62,97339>75% Grass cover, Good, HSG A
62,97339100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
9.51000.02000.18Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
3.62160.02000.99Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
13.1316Total
Subcatchment 176S: DA P3 (Pervious)
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===== PAGE 32 ===== ## Summary for Pond 174P: WQ Infiltration Basin #1
Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 0.30" for NJDEP event
Inflow = 2.10 cfs @ 1.09 hrs, Volume= 2,727 cf
Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min
Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 95.61' @ 2.34 hrs Surf.Area= 4,754 sf Storage= 2,726 cf
Plug-Flow detention time= (not calculated: initial storage exceeds outflow)
Center-of-Mass det. time= (not calculated: no outflow)
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin X 0.00 L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir X 0.00 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs) ===== PAGE 33 =====
Pond 174P: WQ Infiltration Basin #1
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 34 =====
Stage-Discharge for Pond 174P: WQ Infiltration Basin #1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.000.000.00
95.100.000.000.0097.700.000.000.00
95.150.000.000.0097.750.000.000.00
95.200.000.000.0097.800.000.000.00
95.250.000.000.0097.850.000.000.00
95.300.000.000.0097.900.000.000.00
95.350.000.000.0097.950.000.000.00
95.400.000.000.0098.000.000.000.00
95.450.000.000.0098.050.000.000.00
95.500.000.000.0098.100.000.000.00
95.550.000.000.0098.150.000.000.00
95.600.000.000.0098.200.000.000.00
95.650.000.000.0098.250.000.000.00
95.700.000.000.0098.300.000.000.00
95.750.000.000.0098.350.000.000.00
95.800.000.000.0098.400.000.000.00
95.850.000.000.0098.450.000.000.00
95.900.000.000.0098.500.000.000.00
95.950.000.000.0098.550.000.000.00
96.000.000.000.0098.600.000.000.00
96.050.000.000.0098.650.000.000.00
96.100.000.000.0098.700.000.000.00
96.150.000.000.0098.750.000.000.00
96.200.000.000.0098.800.000.000.00
96.250.000.000.0098.850.000.000.00
96.300.000.000.00
96.350.000.000.00
96.400.000.000.00
96.450.000.000.00
96.500.000.000.00
96.550.000.000.00
96.600.000.000.00
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
===== PAGE 35 =====
Stage-Area-Storage for Pond 174P: WQ Infiltration Basin #1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
===== PAGE 36 ===== ## Summary for Pond 177P: WQ Infiltration Basin #2
Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 0.28" for NJDEP event
Inflow = 1.38 cfs @ 1.11 hrs, Volume= 2,023 cf
Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Atten= 100%, Lag= 0.0 min
Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 91.70' @ 2.55 hrs Surf.Area= 3,116 sf Storage= 2,023 cf
Plug-Flow detention time= (not calculated: initial storage exceeds outflow)
Center-of-Mass det. time= (not calculated: no outflow)
VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin X 0.00 L = 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir X 0.00 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs) ===== PAGE 37 =====
Pond 177P: WQ Infiltration Basin #2
Image
Inflow Outflow Discarded Primary 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 38 =====
Stage-Discharge for Pond 177P: WQ Infiltration Basin #2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.000.000.00
91.050.000.000.0093.650.000.000.00
91.100.000.000.0093.700.000.000.00
91.150.000.000.0093.750.000.000.00
91.200.000.000.0093.800.000.000.00
91.250.000.000.0093.850.000.000.00
91.300.000.000.0093.900.000.000.00
91.350.000.000.0093.950.000.000.00
91.400.000.000.0094.000.000.000.00
91.450.000.000.0094.050.000.000.00
91.500.000.000.0094.100.000.000.00
91.550.000.000.0094.150.000.000.00
91.600.000.000.0094.200.000.000.00
91.650.000.000.0094.250.000.000.00
91.700.000.000.0094.300.000.000.00
91.750.000.000.0094.350.000.000.00
91.800.000.000.0094.400.000.000.00
91.850.000.000.0094.450.000.000.00
91.900.000.000.0094.500.000.000.00
91.950.000.000.00
92.000.000.000.00
92.050.000.000.00
92.100.000.000.00
92.150.000.000.00
92.200.000.000.00
92.250.000.000.00
92.300.000.000.00
92.350.000.000.00
92.400.000.000.00
92.450.000.000.00
92.500.000.000.00
92.550.000.000.00
92.600.000.000.00
92.650.000.000.00
92.700.000.000.00
92.750.000.000.00
92.800.000.000.00
92.850.000.000.00
92.900.000.000.00
92.950.000.000.00
93.000.000.000.00
93.050.000.000.00
93.100.000.000.00
93.150.000.000.00
93.200.000.000.00
93.250.000.000.00
93.300.000.000.00
93.350.000.000.00
93.400.000.000.00
93.450.000.000.00
93.500.000.000.00
93.550.000.000.00
===== PAGE 39 =====
Stage-Area-Storage for Pond 177P: WQ Infiltration Basin #2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,463
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
===== PAGE 40 ===== ## APPENDIX C ===== PAGE 41 =====
PROPOSED
Image
===== PAGE 42 ===== ## Area Listing (selected nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
239,31539>75% Grass cover, Good, HSG A (148S, 149S, 150S)
60,34598Paved parking, HSG A (141S, 143S, 172S)
4,00098Unconnected roofs, HSG A (145S)
236,87930Woods, Good, HSG A (149S)
540,53942TOTAL AREA
===== PAGE 43 ===== 102 Sams -REV 12-02-25 NOAA 24-hr D 2-Year Rainfall=3.42" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 3 Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 141S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=2.34 cfs 8,398 cf Subcatchment 143S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=1.53 cfs 6,233 cf Subcatchment 145S: DA P5 (4000 SF Roof) Runoff Area=4,000 sf 0.00% Impervious Runoff Depth=3.19" Tc=6.0 min CN=98/0 Runoff=0.24 cfs 1,062 cf Subcatchment 148S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.00 cfs 28 cf Subcatchment 149S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.00 cfs 0 cf Subcatchment 150S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.00 cfs 34 cf Subcatchment 172S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.43 cfs 1,394 cf Pond 130P: SUBSURFACE Peak Elev=1.35' Storage=277 cf Inflow=0.24 cfs 1,062 cf Outflow=0.04 cfs 1,062 cf Pond 144P: WQ Infiltration Basin #1 Peak Elev=95.51' Storage=2,258 cf Inflow=2.34 cfs 8,433 cf Discarded=0.33 cfs 8,433 cf Primary=0.00 cfs 0 cf Outflow=0.33 cfs 8,433 cf Pond 149P: WQ Infiltration Basin #2 Peak Elev=92.02' Storage=3,026 cf Inflow=1.53 cfs 6,261 cf Discarded=0.08 cfs 6,261 cf Primary=0.00 cfs 0 cf Outflow=0.08 cfs 6,261 cf Link 147L: POA Inflow=0.43 cfs 1,394 cf Primary=0.43 cfs 1,394 cf Total Runoff Area = 540,539 sf Runoff Volume = 17,150 cf Average Runoff Depth = 0.38" 88.84% Pervious = 480,194 sf 11.16% Impervious = 60,345 sf ===== PAGE 44 ===== # Summary for Subcatchment 141S: DA P1 (Impervious) Runoff = 2.34 cfs @ 12.11 hrs, Volume=8,398 cf, Depth=3.19" Routed to Pond 144P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
31,62598Paved parking, HSG A
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
1.21000.02001.42Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
1.83500.02503.21Shallow Concentrated Flow, Paved Kv= 20.3 fps
3.0450Total
Subcatchment 141S: DA P1 (Impervious)
Image
===== PAGE 45 ===== # Summary for Subcatchment 143S: DA P2 (Impervious) Runoff = 1.53 cfs @ 12.13 hrs, Volume=6,233 cf, Depth= 3.19" Routed to Pond 149P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
23,47098Paved parking, HSG A
23,47098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
4.13500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.9450Total
Subcatchment 143S: DA P2 (Impervious)
Image
===== PAGE 46 ===== # Summary for Subcatchment 145S: DA P5 (4000 SF Roof) Runoff = 0.24 cfs @ 12.14 hrs, Volume= 1,062 cf, Depth= 3.19" Routed to Pond 130P : SUBSURFACE Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
4,00098Unconnected roofs, HSG A
4,00098100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,
Subcatchment 145S: DA P5 (4000 SF Roof)
Image
6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 47 ===== # Summary for Subcatchment 148S: DA P3 (Pervious) Runoff = 0.00 cfs @ 24.01 hrs, Volume= 28 cf, Depth= 0.01" Routed to Pond 149P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
62,97339>75% Grass cover, Good, HSG A
62,97339100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
9.51000.02000.18Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
3.62160.02000.99Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
13.1316Total
Subcatchment 148S: DA P3 (Pervious)
Image
===== PAGE 48 ===== # Summary for Subcatchment 149S: DA P0 Pervious Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Depth= 0.00" Routed to Link 147L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
236,87930Woods, Good, HSG A
99,37139>75% Grass cover, Good, HSG A
336,25033Weighted Average
336,25033100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
36.21000.00500.05Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps
13.65790.02000.71
49.8679Total
Subcatchment 149S: DA P0 Pervious
Image
===== PAGE 49 ===== # Summary for Subcatchment 150S: DA P4 (Pervious) Runoff = 0.00 cfs @ 24.01 hrs, Volume= 34 cf, Depth= 0.01" Routed to Pond 144P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
76,97139>75% Grass cover, Good, HSG A
76,97139100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
12.51000.01000.13Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3960.01000.70Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8196Total
Subcatchment 150S: DA P4 (Pervious)
Image
===== PAGE 50 ===== # Summary for Subcatchment 172S: DA P6 (Impervious) Runoff = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf, Depth= 3.19" Routed to Link 147L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
5,25098Paved parking, HSG A
5,25098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
0.6500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.4150Total
Subcatchment 172S: DA P6 (Impervious)
Hydrograph
Image
===== PAGE 51 ===== ## Summary for Pond 130P: SUBSURFACE Inflow Area = 4,000 sf, 0.00% Impervious, Inflow Depth = 3.19" for 2-Year event Inflow = 0.24 cfs @ 12.14 hrs, Volume= 1,062 cf Outflow = 0.04 cfs @ 11.60 hrs, Volume= 1,062 cf, Atten= 83%, Lag= 0.0 min Discarded = 0.04 cfs @ 11.60 hrs, Volume= 1,062 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 1.35' @ 12.81 hrs Surf.Area= 533 sf Storage= 277 cf Plug-Flow detention time= 41.5 min calculated for 1,062 cf (100% of inflow) Center-of-Mass det. time= 41.5 min (802.1 - 760.5)
VolumeInvertAvail.StorageStorage Description
#1A0.00'765 cf13.00'W x 41.00'L x 5.00'H Field A
2,664 cf Overall - 751 cf Embedded = 1,914 cf x 40.0% Voids
#2A1.00'573 cfADS N-12 30" x 6 Inside #1 Inside= 30.0"W x 30.0"H => 4.90 sf x 20.00'L = 98.0 cf Outside= 36.0"W x 36.0"H => 6.42 sf x 20.00'L = 128.3 cf Row Length Adjustment= -1.00' x 4.90 sf x 3 rows
## 1 ,339 cf Total Available Storage Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded0.00'3.250 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.04 cfs @ 11.60 hrs HW=0.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs) ===== PAGE 52 =====
Pond 130P: SUBSURFACE
Image
===== PAGE 53 =====
Stage-Discharge for Pond 130P: SUBSURFACE
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
0.000.002.600.04
0.050.042.650.04
0.100.042.700.04
0.150.042.750.04
0.200.042.800.04
0.250.042.850.04
0.300.042.900.04
0.350.042.950.04
0.400.043.000.04
0.450.043.050.04
0.500.043.100.04
0.550.043.150.04
0.600.043.200.04
0.650.043.250.04
0.700.043.300.04
0.750.043.350.04
0.800.043.400.04
0.850.043.450.04
0.900.043.500.04
0.950.043.550.04
1.000.043.600.04
1.050.043.650.04
1.100.043.700.04
1.150.043.750.04
1.200.043.800.04
1.250.043.850.04
1.300.043.900.04
1.350.043.950.04
1.400.044.000.04
1.450.044.050.04
1.500.044.100.04
1.550.044.150.04
1.600.044.200.04
1.650.044.250.04
1.700.044.300.04
1.750.044.350.04
1.800.044.400.04
1.850.044.450.04
1.900.044.500.04
1.950.044.550.04
2.000.044.600.04
2.050.044.650.04
2.100.044.700.04
2.150.044.750.04
2.200.044.800.04
2.250.044.850.04
2.300.044.900.04
2.350.044.950.04
2.400.045.000.04
2.450.04
2.500.04
2.550.04
===== PAGE 54 =====
Stage-Area-Storage for Pond 130P: SUBSURFACE
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
0.0053302.60533707
0.05533112.65533726
0.10533212.70533745
0.15533322.75533764
0.20533432.80533782
0.25533532.85533801
0.30533642.90533819
0.35533752.95533838
0.40533853.00533856
0.45533963.05533874
0.505331073.10533891
0.555331173.15533909
0.605331283.20533926
0.655331393.25533943
0.705331493.30533960
0.755331603.35533976
0.805331713.40533992
0.855331813.455331,007
0.905331923.505331,022
0.955332033.555331,037
1.005332133.605331,050
1.055332233.655331,063
1.105332313.705331,075
1.155332403.755331,084
1.205332473.805331,092
1.255332553.855331,099
1.305332643.905331,107
1.355332763.955331,116
1.405332894.005331,126
1.455333024.055331,136
1.505333174.105331,147
1.555333324.155331,158
1.605333474.205331,168
1.655333634.255331,179
1.705333794.305331,190
1.755333964.355331,200
1.805334134.405331,211
1.855334304.455331,222
1.905334484.505331,232
1.955334654.555331,243
2.005334834.605331,254
2.055335014.655331,264
2.105335204.705331,275
2.155335384.755331,286
2.205335574.805331,296
2.255335754.855331,307
2.305335944.905331,318
2.355336134.955331,328
2.405336325.005331,339
2.45533651
2.50533669
2.55533688
===== PAGE 55 ===== ## Summary for Pond 144P: WQ Infiltration Basin #1
Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 0.93" for 2-Year event
Inflow = 2.34 cfs @ 12.11 hrs, Volume= 8,433 cf
Outflow = 0.33 cfs @ 12.65 hrs, Volume= 8,433 cf, Atten= 86%, Lag= 32.5 min
Discarded = 0.33 cfs @ 12.65 hrs, Volume= 8,433 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 147L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 95.51' @ 12.65 hrs Surf.Area= 4,668 sf Storage= 2,258 cf
Plug-Flow detention time= 43.9 min calculated for 8,433 cf (100% of inflow)
Center-of-Mass det. time= 43.9 min ( 802.2 - 758.2 )
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.33 cfs @ 12.65 hrs HW=95.51' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.33 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs) ===== PAGE 56 =====
Pond 144P: WQ Infiltration Basin #1
Image
Image
Inflow Outflow Discarded Primary 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 57 =====
Stage-Discharge for Pond 144P: WQ Infiltration Basin #1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.470.470.00
95.050.310.310.0097.650.490.480.01
95.100.310.310.0097.700.530.480.05
95.150.310.310.0097.750.590.480.11
95.200.320.320.0097.800.680.490.19
95.250.320.320.0097.850.790.490.30
95.300.320.320.0097.900.920.490.42
95.350.330.330.0097.951.060.500.57
95.400.330.330.0098.001.230.500.73
95.450.330.330.0098.051.410.500.91
95.500.330.330.0098.101.600.501.10
95.550.340.340.0098.151.810.501.31
95.600.340.340.0098.202.040.501.54
95.650.340.340.0098.252.270.501.77
95.700.350.350.0098.302.520.502.01
95.750.350.350.0098.352.770.502.27
95.800.350.350.0098.403.030.502.53
95.850.360.360.0098.453.290.502.79
95.900.360.360.0098.503.560.503.06
95.950.360.360.0098.553.820.503.32
96.000.370.370.0098.604.080.503.58
96.050.370.370.0098.654.340.503.84
96.100.370.370.0098.704.590.504.08
96.150.380.380.0098.754.810.504.31
96.200.380.380.0098.805.020.504.52
96.250.380.380.0098.855.170.504.67
96.300.390.390.00
96.350.390.390.00
96.400.390.390.00
96.450.390.390.00
96.500.400.400.00
96.550.400.400.00
96.600.400.400.00
96.650.410.410.00
96.700.410.410.00
96.750.410.410.00
96.800.420.420.00
96.850.420.420.00
96.900.420.420.00
96.950.430.430.00
97.000.430.430.00
97.050.430.430.00
97.100.440.440.00
97.150.440.440.00
97.200.450.450.00
97.250.450.450.00
97.300.450.450.00
97.350.460.460.00
97.400.460.460.00
97.450.460.460.00
97.500.470.470.00
97.550.470.470.00
===== PAGE 58 =====
Stage-Area-Storage for Pond 144P: WQ Infiltration Basin #1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
===== PAGE 59 ===== ## Summary for Pond 149P: WQ Infiltration Basin #2
Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 0.87" for 2-Year event
Inflow = 1.53 cfs @ 12.13 hrs, Volume= 6,261 cf
Outflow = 0.08 cfs @ 14.36 hrs, Volume= 6,261 cf, Atten= 95%, Lag= 133.9 min
Discarded = 0.08 cfs @ 14.36 hrs, Volume= 6,261 cf
Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Routed to Link 147L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 92.02' @ 14.36 hrs Surf.Area= 3,332 sf Storage= 3,026 cf
Plug-Flow detention time= 342.1 min calculated for 6,260 cf (100% of inflow)
Center-of-Mass det. time= 342.1 min ( 1,103.5 - 761.4 )
VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.08 cfs @ 14.36 hrs HW=92.02' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.08 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs) ===== PAGE 60 =====
Pond 149P: WQ Infiltration Basin #2
Image
Inflow Outflow Discarded Primary 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 61 =====
Stage-Discharge for Pond 149P: WQ Infiltration Basin #2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.110.110.00
91.050.060.060.0093.650.110.110.00
91.100.070.070.0093.700.110.110.00
91.150.070.070.0093.750.120.120.00
91.200.070.070.0093.800.120.120.00
91.250.070.070.0093.850.130.120.01
91.300.070.070.0093.900.150.120.03
91.350.070.070.0093.950.190.120.07
91.400.070.070.0094.000.230.120.11
91.450.070.070.0094.050.290.120.17
91.500.070.070.0094.100.350.120.23
91.550.070.070.0094.150.420.120.30
91.600.070.070.0094.200.490.130.36
91.650.070.070.0094.250.550.130.43
91.700.080.080.0094.300.600.130.47
91.750.080.080.0094.350.650.130.52
91.800.080.080.0094.400.690.130.56
91.850.080.080.0094.450.730.130.60
91.900.080.080.0094.500.770.130.63
91.950.080.080.00
92.000.080.080.00
92.050.080.080.00
92.100.080.080.00
92.150.080.080.00
92.200.080.080.00
92.250.090.090.00
92.300.090.090.00
92.350.090.090.00
92.400.090.090.00
92.450.090.090.00
92.500.090.090.00
92.550.090.090.00
92.600.090.090.00
92.650.090.090.00
92.700.090.090.00
92.750.090.090.00
92.800.100.100.00
92.850.100.100.00
92.900.100.100.00
92.950.100.100.00
93.000.100.100.00
93.050.100.100.00
93.100.100.100.00
93.150.100.100.00
93.200.100.100.00
93.250.100.100.00
93.300.110.110.00
93.350.110.110.00
93.400.110.110.00
93.450.110.110.00
93.500.110.110.00
93.550.110.110.00
===== PAGE 62 =====
Stage-Area-Storage for Pond 149P: WQ Infiltration Basin #2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,463
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
===== PAGE 63 ===== ## Summary for Link 147L: POA Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 0.03" for 2-Year event Inflow = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf Primary = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 147L: POA
Hydrograph
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 64 ===== Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 141S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=3.70 cfs 13,553 cf Subcatchment 143S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=2.42 cfs 10,058 cf Subcatchment 145S: DA P5 (4000 SF Roof) Runoff Area=4,000 sf 0.00% Impervious Runoff Depth=5.14" Tc=6.0 min CN=98/0 Runoff=0.38 cfs 1,714 cf Subcatchment 148S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.07 cfs 1,487 cf Subcatchment 149S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.08" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.06 cfs 2,256 cf Subcatchment 150S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.09 cfs 1,818 cf Subcatchment 172S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.67 cfs 2,250 cf Pond 130P: SUBSURFACE Peak Elevation=2.25' Storage=576 cfs Runoff=0.38 cfs 1,714 cf Outflow=0.04 cfs 1,714 cf Pond 144P: WQ Infiltration Basin #1 Peak Elevation=96.01' Storage=4,717 cfs Runoff=3.70 cfs 15,371 cf Discarded=0.37 cfs Runoff=0.37 cfs 15,371 cf Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff=0.37 cfs Runoff ===== PAGE 65 ===== # Summary for Subcatchment 141S: DA P1 (Impervious) Runoff = 3.70 cfs @ 12.11 hrs, Volume= 13,553 cf, Depth= 5.14" Routed to Pond 144P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
31,62598Paved parking, HSG A
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
1.21000.02001.42Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
1.83500.02503.21Shallow Concentrated Flow, Paved Kv= 20.3 fps
3.0450Total
Subcatchment 141S: DA P1 (Impervious)
Image
===== PAGE 66 ===== # Summary for Subcatchment 143S: DA P2 (Impervious) Runoff = 2.42 cfs @ 12.13 hrs, Volume=10,058 cf, Depth= 5.14" Routed to Pond 149P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
23,47098Paved parking, HSG A
23,47098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
4.13500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.9450Total
Subcatchment 143S: DA P2 (Impervious)
Image
===== PAGE 67 ===== # Summary for Subcatchment 145S: DA P5 (4000 SF Roof) Runoff = 0.38 cfs @ 12.14 hrs, Volume= 1,714 cf, Depth= 5.14" Routed to Pond 130P : SUBSURFACE Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
4,00098Unconnected roofs, HSG A
4,00098100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,
Subcatchment 145S: DA P5 (4000 SF Roof)
Image
4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 68 ===== # Summary for Subcatchment 148S: DA P3 (Pervious) Runoff = 0.07 cfs @ 13.04 hrs, Volume= 1,487 cf, Depth= 0.28" Routed to Pond 149P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
62,97339>75% Grass cover, Good, HSG A
62,97339100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
9.51000.02000.18Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
3.62160.02000.99Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
13.1316Total
Subcatchment 148S: DA P3 (Pervious)
Image
===== PAGE 69 ===== # Summary for Subcatchment 149S: DA P0 Pervious Runoff = 0.06 cfs @ 17.81 hrs, Volume= Routed to Link 147L : POA 2,256 cf, Depth= 0.08" Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
236,87930Woods, Good, HSG A
99,37139>75% Grass cover, Good, HSG A
336,25033Weighted Average
336,25033100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
36.21000.00500.05Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Shallow Concentrated Flow, Woodland Kv=5.0 fps
13.65790.02000.71
49.8679Total
Subcatchment 149S: DA P0 Pervious
Image
===== PAGE 70 ===== # Summary for Subcatchment 150S: DA P4 (Pervious) Runoff = 0.09 cfs @ 13.09 hrs, Volume= 1,818 cf, Depth= 0.28" Routed to Pond 144P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
76,97139>75% Grass cover, Good, HSG A
76,97139100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
12.51000.01000.13Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3960.01000.70Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8196Total
Subcatchment 150S: DA P4 (Pervious)
Image
===== PAGE 71 ===== # Summary for Subcatchment 172S: DA P6 (Impervious) Runoff = 0.67 cfs @ 12.10 hrs, Volume= 2,250 cf, Depth= 5.14" Routed to Link 147L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
5,25098Paved parking, HSG A
5,25098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
0.6500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.4150Total
Subcatchment 172S: DA P6 (Impervious)
Hydrograph
Image
===== PAGE 72 ===== ## Summary for Pond 130P: SUBSURFACE Inflow Area = 4,000 sf, 0.00% Impervious, Inflow Depth = 5.14" for 10-Year event Inflow = 0.38 cfs @ 12.14 hrs, Volume= 1,714 cf Outflow = 0.04 cfs @ 11.14 hrs, Volume= 1,714 cf, Atten= 90%, Lag= 0.0 min Discarded = 0.04 cfs @ 11.14 hrs, Volume= 1,714 cf Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 2.25' @ 13.27 hrs Surf.Area= 533 sf Storage= 576 cf Plug-Flow detention time= 97.6 min calculated for 1,714 cf (100% of inflow) Center-of-Mass det. time= 97.6 min (849.3 - 751.7)
VolumeInvertAvail.StorageStorage Description
#1A0.00'765 cf13.00'W x 41.00'L x 5.00'H Field A
2,664 cf Overall - 751 cf Embedded = 1,914 cf x 40.0% Voids
#2A1.00'573 cfADS N-12 30" x 6 Inside #1 Inside= 30.0"W x 30.0"H => 4.90 sf x 20.00'L = 98.0 cf Outside= 36.0"W x 36.0"H => 6.42 sf x 20.00'L = 128.3 cf Row Length Adjustment= -1.00' x 4.90 sf x 3 rows
## 1 ,339 cf Total Available Storage Storage Group A created with Chamber Wizard
DeviceRoutingInvertOutlet Devices
#1Discarded0.00'3.250 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.04 cfs @ 11.14 hrs HW=0.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs) ===== PAGE 73 =====
Pond 130P: SUBSURFACE
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 74 =====
Stage-Discharge for Pond 130P: SUBSURFACE
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
0.000.002.600.04
0.050.042.650.04
0.100.042.700.04
0.150.042.750.04
0.200.042.800.04
0.250.042.850.04
0.300.042.900.04
0.350.042.950.04
0.400.043.000.04
0.450.043.050.04
0.500.043.100.04
0.550.043.150.04
0.600.043.200.04
0.650.043.250.04
0.700.043.300.04
0.750.043.350.04
0.800.043.400.04
0.850.043.450.04
0.900.043.500.04
0.950.043.550.04
1.000.043.600.04
1.050.043.650.04
1.100.043.700.04
1.150.043.750.04
1.200.043.800.04
1.250.043.850.04
1.300.043.900.04
1.350.043.950.04
1.400.044.000.04
1.450.044.050.04
1.500.044.100.04
1.550.044.150.04
1.600.044.200.04
1.650.044.250.04
1.700.044.300.04
1.750.044.350.04
1.800.044.400.04
1.850.044.450.04
1.900.044.500.04
1.950.044.550.04
2.000.044.600.04
2.050.044.650.04
2.100.044.700.04
2.150.044.750.04
2.200.044.800.04
2.250.044.850.04
2.300.044.900.04
2.350.044.950.04
2.400.045.000.04
2.450.04
2.500.04
2.550.04
===== PAGE 75 =====
Stage-Area-Storage for Pond 130P: SUBSURFACE
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
0.0053302.60533707
0.05533112.65533726
0.10533212.70533745
0.15533322.75533764
0.20533432.80533782
0.25533532.85533801
0.30533642.90533819
0.35533752.95533838
0.40533853.00533856
0.45533963.05533874
0.505331073.10533891
0.555331173.15533909
0.605331283.20533926
0.655331393.25533943
0.705331493.30533960
0.755331603.35533976
0.805331713.40533992
0.855331813.455331,007
0.905331923.505331,022
0.955332033.555331,037
1.005332133.605331,050
1.055332233.655331,063
1.105332313.705331,075
1.155332403.755331,084
1.205332473.805331,092
1.255332553.855331,099
1.305332643.905331,107
1.355332763.955331,116
1.405332894.005331,126
1.455333024.055331,136
1.505333174.105331,147
1.555333324.155331,158
1.605333474.205331,168
1.655333634.255331,179
1.705333794.305331,190
1.755333964.355331,200
1.805334134.405331,211
1.855334304.455331,222
1.905334484.505331,232
1.955334654.555331,243
2.005334834.605331,254
2.055335014.655331,264
2.105335204.705331,275
2.155335384.755331,286
2.205335574.805331,296
2.255335754.855331,307
2.305335944.905331,318
2.355336134.955331,328
2.405336325.005331,339
2.45533651
2.50533669
2.55533688
===== PAGE 76 ===== ## Summary for Pond 144P: WQ Infiltration Basin #1
Inflow Area =108,596 sf,29.12% Impervious,Inflow Depth = 1.70" for 10-Year event
Inflow =3.70 cfs @12.11 hrs,15,371 cf
Outflow =0.37 cfs @13.34 hrs,15,371 cf, Atten= 90%, Lag= 73.5 min
Discarded =0.37 cfs @13.34 hrs,15,371 cf
Primary =0.00 cfs @0.00 hrs,0 cf
Routed to Link 147L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 96.01' @ 13.34 hrs Surf.Area= 5,102 sf Storage= 4,717 cf Plug-Flow detention time= 98.2 min calculated for 15,369 cf (100% of inflow) Center-of-Mass det. time= 98.2 min ( 878.4 - 780.2 )
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.37 cfs @ 13.34 hrs HW=96.01' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.37 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=95.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs) ===== PAGE 77 =====
Pond 144P: WQ Infiltration Basin #1
Image
Image
Inflow Outflow Discarded Primary 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 78 =====
Stage-Discharge for Pond 144P: WQ Infiltration Basin #1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.470.470.00
95.050.310.310.0097.650.490.480.01
95.100.310.310.0097.700.530.480.05
95.150.310.310.0097.750.590.480.11
95.200.320.320.0097.800.680.490.19
95.250.320.320.0097.850.790.490.30
95.300.320.320.0097.900.920.490.42
95.350.330.330.0097.951.060.500.57
95.400.330.330.0098.001.230.500.73
95.450.330.330.0098.051.410.500.91
95.500.330.330.0098.101.600.501.10
95.550.340.340.0098.151.810.501.31
95.600.340.340.0098.202.040.501.54
95.650.340.340.0098.252.270.501.77
95.700.350.350.0098.302.520.502.01
95.750.350.350.0098.352.770.502.27
95.800.350.350.0098.403.030.502.53
95.850.360.360.0098.453.290.502.79
95.900.360.360.0098.503.560.503.06
95.950.360.360.0098.553.820.503.32
96.000.370.370.0098.604.080.503.58
96.050.370.370.0098.654.340.503.84
96.100.370.370.0098.704.590.504.08
96.150.380.380.0098.754.810.504.31
96.200.380.380.0098.805.020.504.52
96.250.380.380.0098.855.170.504.67
96.300.390.390.00
96.350.390.390.00
96.400.390.390.00
96.450.390.390.00
96.500.400.400.00
96.550.400.400.00
96.600.400.400.00
96.650.410.410.00
96.700.410.410.00
96.750.410.410.00
96.800.420.420.00
96.850.420.420.00
96.900.420.420.00
96.950.430.430.00
97.000.430.430.00
97.050.430.430.00
97.100.440.440.00
97.150.440.440.00
97.200.450.450.00
97.250.450.450.00
97.300.450.450.00
97.350.460.460.00
97.400.460.460.00
97.450.460.460.00
97.500.470.470.00
97.550.470.470.00
===== PAGE 79 =====
Stage-Area-Storage for Pond 144P: WQ Infiltration Basin #1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
===== PAGE 80 ===== ## Summary for Pond 149P: WQ Infiltration Basin #2 Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 1.60" for 10-Year event Inflow = 2.42 cfs @ 12.13 hrs, Volume= 11,545 cf Outflow = 0.10 cfs @ 17.18 hrs, Volume= 11,545 cf, Atten= 96%, Lag= 303.1 min Discarded = 0.10 cfs @ 17.18 hrs, Volume= 11,545 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Link 147L : POA Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Peak Elev= 92.89' @ 17.18 hrs Surf.Area= 3,987 sf Storage= 6,236 cf Plug-Flow detention time= 647.4 min calculated for 11,545 cf (100% of inflow) Center-of-Mass det. time= 647.4 min (1,432.8 - 785.4 )
VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.10 cfs @ 17.18 hrs HW=92.89' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.10 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=91.00' (Free Discharge) 1=Culvert to Subsurface Basin (Controls 0.00 cfs) 2=Sharp-Crested Rectangular Weir (Controls 0.00 cfs) ===== PAGE 81 =====
Pond 149P: WQ Infiltration Basin #2
Image
Inflow Outflow Discarded Primary 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 82 =====
Stage-Discharge for Pond 149P: WQ Infiltration Basin #2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.110.110.00
91.050.060.060.0093.650.110.110.00
91.100.070.070.0093.700.110.110.00
91.150.070.070.0093.750.120.120.00
91.200.070.070.0093.800.120.120.00
91.250.070.070.0093.850.130.120.01
91.300.070.070.0093.900.150.120.03
91.350.070.070.0093.950.190.120.07
91.400.070.070.0094.000.230.120.11
91.450.070.070.0094.050.290.120.17
91.500.070.070.0094.100.350.120.23
91.550.070.070.0094.150.420.120.30
91.600.070.070.0094.200.490.130.36
91.650.070.070.0094.250.550.130.43
91.700.080.080.0094.300.600.130.47
91.750.080.080.0094.350.650.130.52
91.800.080.080.0094.400.690.130.56
91.850.080.080.0094.450.730.130.60
91.900.080.080.0094.500.770.130.63
91.950.080.080.00
92.000.080.080.00
92.050.080.080.00
92.100.080.080.00
92.150.080.080.00
92.200.080.080.00
92.250.090.090.00
92.300.090.090.00
92.350.090.090.00
92.400.090.090.00
92.450.090.090.00
92.500.090.090.00
92.550.090.090.00
92.600.090.090.00
92.650.090.090.00
92.700.090.090.00
92.750.090.090.00
92.800.100.100.00
92.850.100.100.00
92.900.100.100.00
92.950.100.100.00
93.000.100.100.00
93.050.100.100.00
93.100.100.100.00
93.150.100.100.00
93.200.100.100.00
93.250.100.100.00
93.300.110.110.00
93.350.110.110.00
93.400.110.110.00
93.450.110.110.00
93.500.110.110.00
93.550.110.110.00
===== PAGE 83 =====
Stage-Area-Storage for Pond 149P: WQ Infiltration Basin #2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,271
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,953
91.402,9051,10794.005,01011,200
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,223
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
===== PAGE 84 ===== ## Summary for Link 147L: POA Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 0.10" for 10-Year event Inflow = 0.67 cfs @ 12.10 hrs, Volume= 4,506 cf Primary = 0.67 cfs @ 12.10 hrs, Volume= 4,506 cf, Atten=0%, Lag=0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 147L: POA
Hydrograph
Image
===== PAGE 85 ===== 102 Sams -REV 12-02-25 NOAA 24-hr D 100-Year Rainfall=9.48" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 45 Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 141S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=6.54 cfs 24,350 cf Subcatchment 143S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=4.27 cfs 18,071 cf Subcatchment 145S: DA P5 (4000 SF Roof) Runoff Area=4,000 sf 0.00% Impervious Runoff Depth=9.24" Tc=6.0 min CN=98/0 Runoff=0.68 cfs 3,080 cf Subcatchment 148S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=1.83" Flow Length=316' Slope=0.0200 /' Tc=13.1 min CN=39/0 Runoff=1.31 cfs 9,627 cf Subcatchment 149S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=1.14" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=1.65 cfs 31,994 cf Subcatchment 150S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=1.83" Flow Length=196' Slope=0.0100 /' Tc=14.8 min CN=39/0 Runoff=1.50 cfs 11,767 cf Subcatchment 172S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=9.24" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=1.19 cfs 4,042 cf Pond 130P: SUBSURFACE Peak Elevation=4.98' Storage=1,335 cfs Runoff=0.68 cfs 3,080 cf Outflow=0.04 cfs 3,080 cf Pond 144P: WQ Infiltration Basin #1 Peak Elevation=97.79' Storage=15,241 cfs Runoff=7.21 cfs 36,117 cf Discarded=0.49 cfs 34,901 cf Primary=0.17 cfs 1,215 cfs Outflow=0.66 cfs 36,117 cf Pond 149P: WQ Infiltration Basin #2 Peak Elevation=94.41' Storage=13,337 cfs Runoff=5.06 cfs 27,698 cf Discarded=0.13 cfs 18,586 cfs Primary=0.57 cfs 9,111 cfs Outflow=0.70 cfs 27,698 cf Link 147L: POA Runoff Volume = 102,930 cfs Average Runoff Depth = 2.29" 88.84% Pervious = 480,194 cfs Runoff Depth = 11.16% Impervious = 60,345 cfs ===== PAGE 86 ===== # Summary for Subcatchment 141S: DA P1 (Impervious) Runoff = 6.54 cfs @ 12.11 hrs, Volume= 24,350 cf, Depth= 9.24" Routed to Pond 144P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
31,62598Paved parking, HSG A
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
1.21000.02001.42Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
1.83500.02503.21Shallow Concentrated Flow, Paved Kv= 20.3 fps
3.0450Total
Subcatchment 141S: DA P1 (Impervious)
Image
===== PAGE 87 ===== # Summary for Subcatchment 143S: DA P2 (Impervious) Runoff = 4.27 cfs @ 12.13 hrs, Volume=18,071 cf, Depth= 9.24" Routed to Pond 149P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
23,47098Paved parking, HSG A
23,47098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
4.13500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.9450Total
Subcatchment 143S: DA P2 (Impervious)
Image
===== PAGE 88 ===== # Summary for Subcatchment 145S: DA P5 (4000 SF Roof) Runoff = 0.68 cfs @ 12.14 hrs, Volume= 3,080 cf, Depth= 9.24" Routed to Pond 130P : SUBSURFACE Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
4,00098Unconnected roofs, HSG A
4,00098100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
6.0Direct Entry,
Subcatchment 145S: DA P5 (4000 SF Roof)
Image
6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 89 ===== # Summary for Subcatchment 148S: DA P3 (Pervious) Runoff = 1.31 cfs @ 12.26 hrs, Volume=9,627 cf, Depth= 1.83" Routed to Pond 149P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
62,97339>75% Grass cover, Good, HSG A
62,97339100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
9.51000.02000.18Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
3.62160.02000.99Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
13.1316Total
Subcatchment 148S: DA P3 (Pervious)
Image
===== PAGE 90 ===== # Summary for Subcatchment 149S: DA P0 Pervious Runoff = 1.65 cfs @ 13.28 hrs, Volume= 31,994 cf, Depth= 1.14" Routed to Link 147L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
236,87930Woods, Good, HSG A
99,37139>75% Grass cover, Good, HSG A
336,25033Weighted Average
336,25033100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
36.21000.00500.05Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Shallow Concentrated Flow, Woodland Kv=5.0 fps
13.65790.02000.71
49.8679Total
Subcatchment 149S: DA P0 Pervious
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 91 ===== # Summary for Subcatchment 150S: DA P4 (Pervious) Runoff = 1.50 cfs @ 12.30 hrs, Volume= 11,767 cf, Depth= 1.83" Routed to Pond 144P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
76,97139>75% Grass cover, Good, HSG A
76,97139100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
12.51000.01000.13Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3960.01000.70Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8196Total
Subcatchment 150S: DA P4 (Pervious)
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 92 ===== # Summary for Subcatchment 172S: DA P6 (Impervious) Runoff = 1.19 cfs @ 12.10 hrs, Volume=4,042 cf, Depth= 9.24" Routed to Link 147L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf)CNDescription
5,25098Paved parking, HSG A
5,25098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
0.81000.05002.05Sheet Flow,
0.6500.00501.44Smooth surfaces n= 0.011 P2= 3.42"
Shallow Concentrated Flow,
Paved Kv= 20.3 fps
1.4150Total
Subcatchment 172S: DA P6 (Impervious)
Image
===== PAGE 93 =====
Summary for Pond 130P: SUBSURFACE
Inflow Area = 4,000 sf, 0.00% Impervious, Inflow Depth = 9.24" for 100-Year event
Inflow = 0.68 cfs @ 12.14 hrs, Volume= 3,080 cf
Outflow = 0.04 cfs @ 10.15 hrs, Volume= 3,080 cf, Atten= 94%, Lag= 0.0 min
Discarded = 0.04 cfs @ 10.15 hrs, Volume= 3,080 cf
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 4.98' @ 14.27 hrs Surf.Area= 533 sf Storage= 1,335 cf
Plug-Flow detention time= 265.3 min calculated for 3,079 cf (100% of inflow)
Center-of-Mass det. time= 265.3 min ( 1,008.8 - 743.6 )
Volume Invert Avail.Storage Storage Description
#1A 0.00' 765 cf 13.00'W x 41.00'L x 5.00'H Field A
#2A 1.00' 573 cf 2,664 cf Overall - 751 cf Embedded = 1,914 cf x 40.0% Voids
ADS N-12 30" x 6 Inside #1
Inside= 30.0"W x 30.0"H => 4.90 sf x 20.00'L = 98.0 cf
Outside= 36.0"W x 36.0"H => 6.42 sf x 20.00'L = 128.3 cf
Row Length Adjustment= -1.00' x 4.90 sf x 3 rows
1,339 cf Total Available Storage
Storage Group A created with Chamber Wizard
Device Routing Invert Outlet Devices
#1 Discarded 0.00' 3.250 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.04 cfs @ 10.15 hrs HW=0.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs) ===== PAGE 94 =====
Pond 130P: SUBSURFACE
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 95 =====
Stage-Discharge for Pond 130P: SUBSURFACE
Elevation (feet)Discarded (cfs)Elevation (feet)Discarded (cfs)
0.000.002.600.04
0.050.042.650.04
0.100.042.700.04
0.150.042.750.04
0.200.042.800.04
0.250.042.850.04
0.300.042.900.04
0.350.042.950.04
0.400.043.000.04
0.450.043.050.04
0.500.043.100.04
0.550.043.150.04
0.600.043.200.04
0.650.043.250.04
0.700.043.300.04
0.750.043.350.04
0.800.043.400.04
0.850.043.450.04
0.900.043.500.04
0.950.043.550.04
1.000.043.600.04
1.050.043.650.04
1.100.043.700.04
1.150.043.750.04
1.200.043.800.04
1.250.043.850.04
1.300.043.900.04
1.350.043.950.04
1.400.044.000.04
1.450.044.050.04
1.500.044.100.04
1.550.044.150.04
1.600.044.200.04
1.650.044.250.04
1.700.044.300.04
1.750.044.350.04
1.800.044.400.04
1.850.044.450.04
1.900.044.500.04
1.950.044.550.04
2.000.044.600.04
2.050.044.650.04
2.100.044.700.04
2.150.044.750.04
2.200.044.800.04
2.250.044.850.04
2.300.044.900.04
2.350.044.950.04
2.400.045.000.04
2.450.04
2.500.04
2.550.04
===== PAGE 96 =====
Stage-Area-Storage for Pond 130P: SUBSURFACE
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
0.0053302.60533707
0.05533112.65533726
0.10533212.70533745
0.15533322.75533764
0.20533432.80533782
0.25533532.85533801
0.30533642.90533819
0.35533752.95533838
0.40533853.00533856
0.45533963.05533874
0.505331073.10533891
0.555331173.15533909
0.605331283.20533926
0.655331393.25533943
0.705331493.30533960
0.755331603.35533976
0.805331713.40533992
0.855331813.455331,007
0.905331923.505331,022
0.955332033.555331,037
1.005332133.605331,050
1.055332233.655331,063
1.105332313.705331,075
1.155332403.755331,084
1.205332473.805331,092
1.255332553.855331,099
1.305332643.905331,107
1.355332763.955331,116
1.405332894.005331,126
1.455333024.055331,136
1.505333174.105331,147
1.555333324.155331,158
1.605333474.205331,168
1.655333634.255331,179
1.705333794.305331,190
1.755333964.355331,200
1.805334134.405331,211
1.855334304.455331,222
1.905334484.505331,232
1.955334654.555331,243
2.005334834.605331,254
2.055335014.655331,264
2.105335204.705331,275
2.155335384.755331,286
2.205335574.805331,296
2.255335754.855331,307
2.305335944.905331,318
2.355336134.955331,328
2.405336325.005331,339
2.45533651
2.50533669
2.55533688
===== PAGE 97 ===== ## Summary for Pond 144P: WQ Infiltration Basin #1
Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 3.99" for 100-Year event
Inflow = 7.21 cfs @ 12.11 hrs, Volume= 36,117 cf
Outflow = 0.66 cfs @ 14.19 hrs, Volume= 36,117 cf, Atten= 91%, Lag= 124.7 min
Discarded = 0.49 cfs @ 14.19 hrs, Volume= 34,901 cf
Primary = 0.17 cfs @ 14.19 hrs, Volume= 1,215 cf
Routed to Link 147L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 97.79' @ 14.19 hrs Surf.Area= 6,774 sf Storage= 15,241 cf
Plug-Flow detention time= 300.5 min calculated for 36,111 cf (100% of inflow)
Plug-Flow detention time = 300.5 min calculated for 36,111 cf (100% of inflow) Center-of-Mass det. time = 300.5 min (1,100.6 - 800.1)
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.49 cfs @ 14.19 hrs HW=97.79' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.49 cfs) Primary OutFlow Max=0.17 cfs @ 14.19 hrs HW=97.79' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.17 cfs @ 1.47 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.17 cfs of 5.75 cfs potential flow) ===== PAGE 98 =====
Pond 144P: WQ Infiltration Basin #1
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 99 =====
Stage-Discharge for Pond 144P: WQ Infiltration Basin #1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.470.470.00
95.050.310.310.0097.650.490.480.01
95.100.310.310.0097.700.530.480.05
95.150.310.310.0097.750.590.480.11
95.200.320.320.0097.800.680.490.19
95.250.320.320.0097.850.790.490.30
95.300.320.320.0097.900.920.490.42
95.350.330.330.0097.951.060.500.57
95.400.330.330.0098.001.230.500.73
95.450.330.330.0098.051.410.500.91
95.500.330.330.0098.101.600.501.10
95.550.340.340.0098.151.810.501.31
95.600.340.340.0098.202.040.501.54
95.650.340.340.0098.252.270.501.77
95.700.350.350.0098.302.520.502.01
95.750.350.350.0098.352.770.502.27
95.800.350.350.0098.403.030.502.53
95.850.360.360.0098.453.290.502.79
95.900.360.360.0098.503.560.503.06
95.950.360.360.0098.553.820.503.32
96.000.370.370.0098.604.080.503.58
96.050.370.370.0098.654.340.503.84
96.100.370.370.0098.704.590.504.08
96.150.380.380.0098.754.810.504.31
96.200.380.380.0098.805.020.504.52
96.250.380.380.0098.855.170.504.67
96.300.390.390.00
96.350.390.390.00
96.400.390.390.00
96.450.390.390.00
96.500.400.400.00
96.550.400.400.00
96.600.400.400.00
96.650.410.410.00
96.700.410.410.00
96.750.410.410.00
96.800.420.420.00
96.850.420.420.00
96.900.420.420.00
96.950.430.430.00
97.000.430.430.00
97.050.430.430.00
97.100.440.440.00
97.150.440.440.00
97.200.450.450.00
97.250.450.450.00
97.300.450.450.00
97.350.460.460.00
97.400.460.460.00
97.450.460.460.00
97.500.470.470.00
97.550.470.470.00
===== PAGE 100 =====
Stage-Area-Storage for Pond 144P: WQ Infiltration Basin #1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
===== PAGE 101 ===== ## Summary for Pond 149P: WQ Infiltration Basin #2
Inflow Area = 86,443 sf, 27.15% Impervious, Inflow Depth = 3.84" for 100-Year event
Inflow = 5.06 cfs @ 12.14 hrs, Volume= 27,698 cf
Outflow = 0.70 cfs @ 13.56 hrs, Volume= 27,698 cf, Atten= 86%, Lag= 85.4 min
Discarded = 0.13 cfs @ 13.56 hrs, Volume= 18,586 cf
Primary = 0.57 cfs @ 13.56 hrs, Volume= 9,111 cf
Routed to Link 147L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 94.41' @ 13.56 hrs Surf.Area= 5,362 sf Storage= 13,337 cf
Plug-Flow detention time= 665.1 min calculated for 27,698 cf (100% of inflow)
Center-of-Mass det. time= 665.1 min ( 1,470.3 - 805.2 )
VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration over Surface area
Discarded OutFlow Max=0.13 cfs @ 13.56 hrs HW=94.41' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.13 cfs) Primary OutFlow Max=0.57 cfs @ 13.56 hrs HW=94.41' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.57 cfs @ 2.89 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.57 cfs of 16.44 cfs potential flow) ===== PAGE 102 =====
Pond 149P: WQ Infiltration Basin #2
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 103 =====
Stage-Discharge for Pond 149P: WQ Infiltration Basin #2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.110.110.00
91.050.060.060.0093.650.110.110.00
91.100.070.070.0093.700.110.110.00
91.150.070.070.0093.750.120.120.00
91.200.070.070.0093.800.120.120.00
91.250.070.070.0093.850.130.120.01
91.300.070.070.0093.900.150.120.03
91.350.070.070.0093.950.190.120.07
91.400.070.070.0094.000.230.120.11
91.450.070.070.0094.050.290.120.17
91.500.070.070.0094.100.350.120.23
91.550.070.070.0094.150.420.120.30
91.600.070.070.0094.200.490.130.36
91.650.070.070.0094.250.550.130.43
91.700.080.080.0094.300.600.130.47
91.750.080.080.0094.350.650.130.52
91.800.080.080.0094.400.690.130.56
91.850.080.080.0094.450.730.130.60
91.900.080.080.0094.500.770.130.63
91.950.080.080.00
92.000.080.080.00
92.050.080.080.00
92.100.080.080.00
92.150.080.080.00
92.200.080.080.00
92.250.090.090.00
92.300.090.090.00
92.350.090.090.00
92.400.090.090.00
92.450.090.090.00
92.500.090.090.00
92.550.090.090.00
92.600.090.090.00
92.650.090.090.00
92.700.090.090.00
92.750.090.090.00
92.800.100.100.00
92.850.100.100.00
92.900.100.100.00
92.950.100.100.00
93.000.100.100.00
93.050.100.100.00
93.100.100.100.00
93.150.100.100.00
93.200.100.100.00
93.250.100.100.00
93.300.110.110.00
93.350.110.110.00
93.400.110.110.00
93.450.110.110.00
93.500.110.110.00
93.550.110.110.00
===== PAGE 104 =====
Stage-Area-Storage for Pond 149P: WQ Infiltration Basin #2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,222
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
===== PAGE 105 ===== ## Summary for Link 147L: POA Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 1.04" for 100-Year event Inflow = 2.36 cfs @ 13.51 hrs, Volume = 46,363 cf Primary = 2.36 cfs @ 13.51 hrs, Volume = 46,363 cf, Atten = 0%, Lag = 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 147L: POA
Hydrograph
Image
===== PAGE 106 ===== ## APPENDIX D ===== PAGE 107 ===== # HALER CONSULTING, LLC 102 Sams Road Pipe Calculations 102 Sams Road Jackson Block 20101, Lot 29&30 Ocean County 23-092 October 2025
StationDrainage Area A (ac)A x CInvert Elev.
FromToLength (ft)IncrementalTotalRunoff Coefficient CIncrementalTotalRainfall Intensity ITotal Runoff Q=CIAPipe Diameter (in)Capacity Full (ft3/sec)Upper EndLower EndSlope (ft/ft)
INLET 2INLET 138.02.9762.9760.982.9162.926.719.542422.5195.4095.250.0039
INLET 1OUTLET54.02.9762.9760.982.9162.926.719.542424.3895.2595.000.0046
INLET 3INLET 439.03.9283.9280.983.8493.856.725.792428.6992.0591.800.0064
INLET 4OUTLET106.03.9283.9280.983.8493.856.725.792431.1391.8091.000.0075
===== PAGE 108 ===== ## APPENDIX E ===== PAGE 109 ===== Scour Hole: Wo 2.00 ft Do 2.00 ft Q100 6.36 cfs q 3.18 D 1.00 (Do or 0.5*Do) Tw 0.21 ft
Image
Dimensions: W1 4 ft W2 10 ft L1 6 ft L2 12 ft Riprap where Y = 1/2D0 d50 = 0.0125/Twq1.33 where Y=D_{0} d_{50}=\frac{0.0082}{Tw}q^{1.33} Y=0.5Do d50 0.28 ft Use 6" Y=Do d50 0.18 ft Use 6" ## Preferred Scour Hole
PLAN
Image
Section A - A
Preferred Scour Hole
PLAN
Section A - A
===== PAGE 110 =====
Image
Scour Hole: Wo 2.00 ft Do 2.00 ft Q100 6.40 cfs q 3.20 D 1.00 (Do or 0.5*Do) Tw 0.31 ft Dimensions: W1 4 ft W2 10 ft L1 6 ft L2 12 ft Riprap where Y = 1/2D0 d50 = 0.0125/Twq1.33 where Y = D0 d50 = 0.0082/Tw q1.33 Y=0.5Do d50 0.19 ft Use 6" Y=Do d50 0.12 ft Use 6" ## Preferred Scour Hole
PLAN
Image
Section A - A
Preferred Scour Hole
PLAN
Section A - A
===== PAGE 111 ===== # New Jersey Department of Agriculture Hydrologic Modeling Database – Data Entry Form ## Project Site Details Chpt. 251 Application Number: Start Date (if known): ___ . Cuzan County Street Address: 102 SAMS ROAD JAMS ROAD Municipality: Jackson Block: 20101 Lot: 29&30 NJDEP Anderson Landuse Code (4 digits): Landuse description: 1810 Site Centroid Location (NJ State Plane Feet):1 Northing: 457298 Easting: 553535 ## Project Contact Details Applicant:_____ Address:___ Phone:_____ Email: ___ ## Post Construction Operation & Maintenance:2 Party Name: ___ Address: ___ Phone: _____ Email: ___ Party type: ___ SSCC 251 HDF1 ===== PAGE 112 ===== ## New Jersey Department of Agriculture Hydrologic Modeling Database – Data Entry Short Form
Note: Provide an electronic copy (pdf) of the drainage report which contains basin design data, flow rates etc. to the soil conservation district as part of the application package. Make additional copies of this page for additional basin information as needed. If no electronic drainage report can be provided, then the Data Entry Long Form must be used.
Basin IDBasin Centroid Northing, Easting (SPF)Basin Type (ex., detention, infiltration, wet pond etc)Construction (embankment, excavated, subsurface?)Dam Height (ft)Width (ft)Dam Class (I-V or NA)Outlet ID (HW# or FES#)Outlet Location Northing, Easting (SPF)Comments
WQ Basin 1457185 553442detention + infiltrationSurfaceOCS-1457260 553511
WQ Basin 2457265 553750detention + infiltrationSurfaceOCS-2457263 553768
Subsurface Lot 30.01457585 553803detention + infiltrationSubsurface
Subsurface Lot 30.02457640 553622detention + infiltrationSubsurface
Subsurface Lot 30.03457328 553534detention + infiltrationSubsurface
Subsurface Lot 30.04457643 553392detention + infiltrationSubsurface
Subsurface Lot 30.05457417 553272detention + infiltrationSubsurface
Subsurface Lot 30.06457208 553208detention + infiltrationSubsurface
Subsurface Lot 30.07456993 553380detention + infiltrationSubsurface
Subsurface Lot 30.08456967 553485detention + infiltrationSubsurface
Subsurface Lot 30.09457180 553604detention + infiltrationSubsurface
===== PAGE 113 ===== ## APPENDIX F ===== PAGE 114 =====
Image
SCD
===== PAGE 115 ===== ## Area Listing (selected nodes)
Area (sq-ft)CNDescription (subcatchment-numbers)
239,31539>75% Grass cover, Good, HSG A (178S, 179S, 180S)
60,34598Paved parking, HSG A (170S, 174S, 181S)
236,87930Woods, Good, HSG A (179S)
536,53942TOTAL AREA
===== PAGE 116 ===== Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 170S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=2.34 cfs 8,398 cf Subcatchment 174S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=1.53 cfs 6,233 cf Subcatchment 178S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.00 cfs 28 cf Subcatchment 179S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.00 cfs 0 cf Subcatchment 180S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.01" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.00 cfs 34 cf Subcatchment 181S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=3.19" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.43 cfs 1,394 cf Pond 183P: WQ Infiltration Basin #1 Peak Elevation=97.83' Storage=15,558 cfs Inflow=2.34 cfs 8,433 cf Discarded=0.00 cfs 0 cf Primary=0.26 cfs 4,631 cf Outflow=0.26 cfs 4,631 cf Pond 184P: WQ Infiltration Basin #2 Peak Elevation=93.98' Storage=11,122 cfs Inflow=1.53 cfs 6,261 cf Discarded=0.00 cfs 0 cf Primary=0.10 cfs 2,699 cf Outflow=0.10 cfs 2,699 cf Link 185L: POA Inflow=0.43 cfs 8,725 cf Primary=0.43 cfs 8,725 cf Total Runoff Area = 536,539 sf Runoff Volume = 16,088 cf Average Runoff Depth = 0.36" 88.75% Pervious = 476.194 sf 11.25% Impervious = 60.345 sf ===== PAGE 117 ===== # Summary for Subcatchment 170S: DA P1 (Impervious) Runoff = 2.34 cfs @ 12.11 hrs, Volume= 8,398 cf, Depth= 3.19" Routed to Pond 183P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
31,62598Paved parking, HSG A
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
1.21000.02001.42Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
1.83500.02503.21Shallow Concentrated Flow, Paved Kv= 20.3 fps
3.0450Total
Subcatchment 170S: DA P1 (Impervious)
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 118 ===== # Summary for Subcatchment 174S: DA P2 (Impervious) Runoff = 1.53 cfs @ 12.13 hrs, Volume=6,233 cf, Depth= 3.19" Routed to Pond 184P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
23,47098Paved parking, HSG A
23,47098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
4.13500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.9450Total
Subcatchment 174S: DA P2 (Impervious)
Image
===== PAGE 119 ===== # Summary for Subcatchment 178S: DA P3 (Pervious) Runoff = 0.00 cfs @ 24.01 hrs, Volume= 28 cf, Depth= 0.01" Routed to Pond 184P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
62,97339>75% Grass cover, Good, HSG A
62,97339100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
9.51000.02000.18Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
3.62160.02000.99Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
13.1316Total
Subcatchment 178S: DA P3 (Pervious)
Hydrograph
Image
===== PAGE 120 ===== # Summary for Subcatchment 179S: DA P0 Pervious Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0 cf, Depth= 0.00" Routed to Link 185L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
236,87930Woods, Good, HSG A
99,37139>75% Grass cover, Good, HSG A
336,25033Weighted Average
336,25033100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
36.21000.00500.05Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Shallow Concentrated Flow, Woodland Kv=5.0 fps
13.65790.02000.71
49.8679Total
Subcatchment 179S: DA P0 Pervious
Image
===== PAGE 121 ===== # Summary for Subcatchment 180S: DA P4 (Pervious) Runoff = 0.00 cfs @ 24.01 hrs, Volume= 34 cf, Depth= 0.01" Routed to Pond 183P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
76,97139>75% Grass cover, Good, HSG A
76,97139100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
12.51000.01000.13Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3960.01000.70Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8196Total
Subcatchment 180S: DA P4 (Pervious)
Image
===== PAGE 122 ===== # Summary for Subcatchment 181S: DA P6 (Impervious) Runoff = 0.43 cfs @ 12.10 hrs, Volume= 1,394 cf, Depth= 3.19" Routed to Link 185L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 2-Year Rainfall=3.42"
Area (sf)CNDescription
5,25098Paved parking, HSG A
5,25098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
0.6500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.4150Total
Subcatchment 181S: DA P6 (Impervious)
Hydrograph
Image
===== PAGE 123 ===== ## Summary for Pond 183P: WQ Infiltration Basin #1
Inflow Area =108,596 sf,29.12% Impervious,Inflow Depth = 0.93" for 2-Year event
Inflow =2.34 cfs @12.11 hrs,Volume= 8,433 cf
Outflow =0.26 cfs @12.92 hrs,Volume= 4,631 cf,
Discarded =0.00 cfs @0.00 hrs,Volume= 0 cf
Primary =0.26 cfs @12.92 hrs,Volume= 4,631 cf
Routed to Link 185L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 97.00' Surf.Area= 6,008 sf Storage= 10,212 cf Peak Elev= 97.83' @ 12.92 hrs Surf.Area= 6,819 sf Storage= 15,558 cf (5,346 cf above start) Plug-Flow detention time = (not calculated: initial storage exceeds outflow) Center-of-Mass det. time = 311.5 min (1,069.7 - 758.2)
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=97.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=0.26 cfs @ 12.92 hrs HW=97.83' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.26 cfs @ 1.65 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.26 cfs of 6.63 cfs potential flow) ===== PAGE 124 =====
Pond 183P: WQ Infiltration Basin #1
Image
Inflow Outflow Discarded Primary 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 125 =====
Stage-Discharge for Pond 183P: WQ Infiltration Basin #1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.010.000.01
95.100.000.000.0097.700.050.000.05
95.150.000.000.0097.750.110.000.11
95.200.000.000.0097.800.190.000.19
95.250.000.000.0097.850.300.000.30
95.300.000.000.0097.900.420.000.42
95.350.000.000.0097.950.570.000.57
95.400.000.000.0098.000.730.000.73
95.450.000.000.0098.050.910.000.91
95.500.000.000.0098.101.100.001.10
95.550.000.000.0098.151.310.001.31
95.600.000.000.0098.201.540.001.54
95.650.000.000.0098.251.770.001.77
95.700.000.000.0098.302.010.002.01
95.750.000.000.0098.352.270.002.27
95.800.000.000.0098.402.530.002.53
95.850.000.000.0098.452.790.002.79
95.900.000.000.0098.503.060.003.06
95.950.000.000.0098.553.320.003.32
96.000.000.000.0098.603.580.003.58
96.050.000.000.0098.653.840.003.84
96.100.000.000.0098.704.080.004.08
96.150.000.000.0098.754.310.004.31
96.200.000.000.0098.804.520.004.52
96.250.000.000.0098.854.670.004.67
96.300.000.000.00
96.350.000.000.00
96.400.000.000.00
96.450.000.000.00
96.500.000.000.00
96.550.000.000.00
96.600.000.000.00
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
===== PAGE 126 =====
Stage-Area-Storage for Pond 183P: WQ Infiltration Basin #1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
===== PAGE 127 ===== ## Summary for Pond 184P: WQ Infiltration Basin #2
Inflow Area =86,443 sf,27.15% Impervious,Inflow Depth = 0.87" for 2-Year event
Inflow =1.53 cfs @12.13 hrs,6,261 cf
Outflow =0.10 cfs @13.87 hrs,2,699 cf, Atten= 94%, Lag= 104.6 min
Discarded =0.00 cfs @0.00 hrs,0 cf
Primary =0.10 cfs @13.87 hrs,2,699 cf
Routed to Link 185L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 93.00' Surf.Area= 4,067 sf Storage= 6,668 cf Peak Elev= 93.98' @ 13.87 hrs Surf.Area= 4,994 sf Storage= 11,122 cf (4,455 cf above start) Plug-Flow detention time = (not calculated: initial storage exceeds outflow) Center-of-Mass det. time = 416.3 min (1,177.6 - 761.4)
VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=0.10 cfs @ 13.87 hrs HW=93.98' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.10 cfs @ 1.46 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.10 cfs of 7.28 cfs potential flow) ===== PAGE 128 =====
Pond 184P: WQ Infiltration Basin #2
Image
Inflow Outflow Discarded Primary 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 129 =====
Stage-Discharge for Pond 184P: WQ Infiltration Basin #2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.000.000.00
91.050.000.000.0093.650.000.000.00
91.100.000.000.0093.700.000.000.00
91.150.000.000.0093.750.000.000.00
91.200.000.000.0093.800.000.000.00
91.250.000.000.0093.850.010.000.01
91.300.000.000.0093.900.030.000.03
91.350.000.000.0093.950.070.000.07
91.400.000.000.0094.000.110.000.11
91.450.000.000.0094.050.170.000.17
91.500.000.000.0094.100.230.000.23
91.550.000.000.0094.150.300.000.30
91.600.000.000.0094.200.360.000.36
91.650.000.000.0094.250.430.000.43
91.700.000.000.0094.300.470.000.47
91.750.000.000.0094.350.520.000.52
91.800.000.000.0094.400.560.000.56
91.850.000.000.0094.450.600.000.60
91.900.000.000.0094.500.630.000.63
91.950.000.000.00
92.000.000.000.00
92.050.000.000.00
92.100.000.000.00
92.150.000.000.00
92.200.000.000.00
92.250.000.000.00
92.300.000.000.00
92.350.000.000.00
92.400.000.000.00
92.450.000.000.00
92.500.000.000.00
92.550.000.000.00
92.600.000.000.00
92.650.000.000.00
92.700.000.000.00
92.750.000.000.00
92.800.000.000.00
92.850.000.000.00
92.900.000.000.00
92.950.000.000.00
93.000.000.000.00
93.050.000.000.00
93.100.000.000.00
93.150.000.000.00
93.200.000.000.00
93.250.000.000.00
93.300.000.000.00
93.350.000.000.00
93.400.000.000.00
93.450.000.000.00
93.500.000.000.00
93.550.000.000.00
===== PAGE 130 =====
Stage-Area-Storage for Pond 184P: WQ Infiltration Basin #2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,717
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
===== PAGE 131 ===== ## Summary for Link 185L: POA Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth > 0.20" for 2-Year event Inflow = 0.43 cfs @ 12.10 hrs, Volume= 8,725 cf Primary = 0.43 cfs @ 12.10 hrs, Volume= 8,725 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs
Link 185L: POA
Hydrograph
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 132 ===== Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 170S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=3.70 cfs 13,553 cf Subcatchment 174S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=2.42 cfs 10,058 cf Subcatchment 178S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.07 cfs 1,487 cf Subcatchment 179S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.08" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.06 cfs 2,256 cf Subcatchment 180S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.28" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.09 cfs 1,818 cf Subcatchment 181S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=5.14" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.67 cfs 2,250 cf Pond 183P: WQ Infiltration Basin #1 Peak Elevation=98.69' Storage=16,706 cfs Inflow=3.70 cfs 15,371 cf Discarded=0.00 cfs 0 cf Primary=4.03 cfs 11,568 cf Outflow=4.03 cfs 11,568 cf Pond 184P: WQ Infiltration Basin #2 Peak Elevation=94.29' Storage=12,701 cfs Inflow=2.42 cfs 11,545 cf Discarded=0.00 cfs 0 cf Primary=0.47 cfs 7,983 cf Outflow=0.47 cfs 7,983 cf Link 185L: POA Inflow=4.64 cfs 24,056 cf Primary=4.64 cfs 24,056 cf Total Runoff Area = 536,539 sf Runoff Volume = 31,422 cf Average Runoff Depth = 0.70" 88.75% Pervious = 476,194 sf 11.25% Impervious = 60,345 sf ===== PAGE 133 ===== # Summary for Subcatchment 170S: DA P1 (Impervious) Runoff = 3.70 cfs @ 12.11 hrs, Volume= 13,553 cf, Depth= 5.14" Routed to Pond 183P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
31,62598Paved parking, HSG A
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
1.21000.02001.42Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
1.83500.02503.21Shallow Concentrated Flow, Paved Kv= 20.3 fps
3.0450Total
Subcatchment 170S: DA P1 (Impervious)
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 134 ===== # Summary for Subcatchment 174S: DA P2 (Impervious) Runoff = 2.42 cfs @ 12.13 hrs, Volume=10,058 cf, Depth= 5.14" Routed to Pond 184P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
23,47098Paved parking, HSG A
23,47098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
4.13500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.9450Total
Subcatchment 174S: DA P2 (Impervious)
Image
===== PAGE 135 ===== # Summary for Subcatchment 178S: DA P3 (Pervious) Runoff = 0.07 cfs @ 13.04 hrs, Volume= 1,487 cf, Depth= 0.28" Routed to Pond 184P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
62,97339>75% Grass cover, Good, HSG A
62,97339100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
9.51000.02000.18Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
3.62160.02000.99Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
13.1316Total
Subcatchment 178S: DA P3 (Pervious)
Image
===== PAGE 136 ===== # Summary for Subcatchment 179S: DA P0 Pervious Runoff = 0.06 cfs @ 17.81 hrs, Volume= 2,256 cf, Depth= 0.08" Routed to Link 185L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
236,87930Woods, Good, HSG A
99,37139>75% Grass cover, Good, HSG A
336,25033Weighted Average
336,25033100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
36.21000.00500.05Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Shallow Concentrated Flow, Woodland Kv= 5.0 fps
13.65790.02000.71
49.8679Total
Subcatchment 179S: DA P0 Pervious
Image
===== PAGE 137 ===== # Summary for Subcatchment 180S: DA P4 (Pervious) Runoff = 0.09 cfs @ 13.09 hrs, Volume= 1,818 cf, Depth= 0.28" Routed to Pond 183P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
76,97139>75% Grass cover, Good, HSG A
76,97139100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
12.51000.01000.13Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3960.01000.70Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8196Total
Subcatchment 180S: DA P4 (Pervious)
Image
===== PAGE 138 ===== # Summary for Subcatchment 181S: DA P6 (Impervious) Runoff = 0.67 cfs @ 12.10 hrs, Volume= 2,250 cf, Depth= 5.14" Routed to Link 185L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 10-Year Rainfall=5.38"
Area (sf)CNDescription
5,25098Paved parking, HSG A
5,25098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
0.6500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
1.4150Total
Subcatchment 181S: DA P6 (Impervious)
Hydrograph
Image
===== PAGE 139 ===== ## Summary for Pond 183P: WQ Infiltration Basin #1
Inflow Area =108,596 sf,29.12% Impervious,Inflow Depth =1.70" for 10-Year event
Inflow =3.70 cfs @12.11 hrs,Volume=15,371 cf
Outflow =4.03 cfs @12.13 hrs,Volume=11,568 cf, Atten= 0%, Lag= 1.1 min
Discarded =0.00 cfs @0.00 hrs,Volume=0 cf
Primary =4.03 cfs @12.13 hrs,Volume=11,568 cf
Routed to Link 185L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 97.00' Surf.Area= 6,008 sf Storage= 10,212 cf Peak Elev= 98.69' @ 12.13 hrs Surf.Area= 6,981 sf Storage= 16,706 cf (6,495 cf above start)
Plug-Flow detention time= 1,319.2 min calculated for 1,356 cf (9% of inflow) Center-of-Mass det. time= 197.3 min ( 977.5 - 780.2 )
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=97.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=3.92 cfs @ 12.13 hrs HW=98.67' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 3.92 cfs @ 3.52 fps) 2=Sharp-Crested Rectangular Weir (Passes 3.92 cfs of 23.50 cfs potential flow) ===== PAGE 140 =====
Pond 183P: WQ Infiltration Basin #1
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 141 =====
Stage-Discharge for Pond 183P: WQ Infiltration Basin #1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.010.000.01
95.100.000.000.0097.700.050.000.05
95.150.000.000.0097.750.110.000.11
95.200.000.000.0097.800.190.000.19
95.250.000.000.0097.850.300.000.30
95.300.000.000.0097.900.420.000.42
95.350.000.000.0097.950.570.000.57
95.400.000.000.0098.000.730.000.73
95.450.000.000.0098.050.910.000.91
95.500.000.000.0098.101.100.001.10
95.550.000.000.0098.151.310.001.31
95.600.000.000.0098.201.540.001.54
95.650.000.000.0098.251.770.001.77
95.700.000.000.0098.302.010.002.01
95.750.000.000.0098.352.270.002.27
95.800.000.000.0098.402.530.002.53
95.850.000.000.0098.452.790.002.79
95.900.000.000.0098.503.060.003.06
95.950.000.000.0098.553.320.003.32
96.000.000.000.0098.603.580.003.58
96.050.000.000.0098.653.840.003.84
96.100.000.000.0098.704.080.004.08
96.150.000.000.0098.754.310.004.31
96.200.000.000.0098.804.520.004.52
96.250.000.000.0098.854.670.004.67
96.300.000.000.00
96.350.000.000.00
96.400.000.000.00
96.450.000.000.00
96.500.000.000.00
96.550.000.000.00
96.600.000.000.00
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
===== PAGE 142 =====
Stage-Area-Storage for Pond 183P: WQ Infiltration Basin #1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,230
96.355,4136,500
96.405,4586,772
96.455,5047,046
96.505,5507,322
96.555,5967,601
96.605,6427,882
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
===== PAGE 143 ===== ## Summary for Pond 184P: WQ Infiltration Basin #2
Inflow Area =86,443 sf,27.15% Impervious,Inflow Depth =1.60" for 10-Year event
Inflow =2.42 cfs @12.13 hrs,Volume=11,545 cf
Outflow =0.47 cfs @12.71 hrs,Volume=7,983 cf, Atten= 81%, Lag= 34.7 min
Discarded =0.00 cfs @0.00 hrs,Volume=0 cf
Primary =0.47 cfs @12.71 hrs,Volume=7,983 cf
Routed to Link 185L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 93.00' Surf.Area= 4,067 sf Storage= 6,668 cf Peak Elev= 94.29' @ 12.71 hrs Surf.Area= 5,259 sf Storage= 12,701 cf (6,033 cf above start) Plug-Flow detention time = 1,244.2 min calculated for 1,315 cf (11% of inflow) Center-of-Mass det. time = 244.7 min (1,030.2 - 785.4)
VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=0.47 cfs @ 12.71 hrs HW=94.29' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 0.47 cfs @ 2.39 fps) 2=Sharp-Crested Rectangular Weir (Passes 0.47 cfs of 13.88 cfs potential flow) ===== PAGE 144 =====
Pond 184P: WQ Infiltration Basin #2
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 145 =====
Stage-Discharge for Pond 184P: WQ Infiltration Basin #2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0093.600.000.000.00
91.050.000.000.0093.650.000.000.00
91.100.000.000.0093.700.000.000.00
91.150.000.000.0093.750.000.000.00
91.200.000.000.0093.800.000.000.00
91.250.000.000.0093.850.010.000.01
91.300.000.000.0093.900.030.000.03
91.350.000.000.0093.950.070.000.07
91.400.000.000.0094.000.110.000.11
91.450.000.000.0094.050.170.000.17
91.500.000.000.0094.100.230.000.23
91.550.000.000.0094.150.300.000.30
91.600.000.000.0094.200.360.000.36
91.650.000.000.0094.250.430.000.43
91.700.000.000.0094.300.470.000.47
91.750.000.000.0094.350.520.000.52
91.800.000.000.0094.400.560.000.56
91.850.000.000.0094.450.600.000.60
91.900.000.000.0094.500.630.000.63
91.950.000.000.00
92.000.000.000.00
92.050.000.000.00
92.100.000.000.00
92.150.000.000.00
92.200.000.000.00
92.250.000.000.00
92.300.000.000.00
92.350.000.000.00
92.400.000.000.00
92.450.000.000.00
92.500.000.000.00
92.550.000.000.00
92.600.000.000.00
92.650.000.000.00
92.700.000.000.00
92.750.000.000.00
92.800.000.000.00
92.850.000.000.00
92.900.000.000.00
92.950.000.000.00
93.000.000.000.00
93.050.000.000.00
93.100.000.000.00
93.150.000.000.00
93.200.000.000.00
93.250.000.000.00
93.300.000.000.00
93.350.000.000.00
93.400.000.000.00
93.450.000.000.00
93.500.000.000.00
93.550.000.000.00
===== PAGE 146 =====
Stage-Area-Storage for Pond 184P: WQ Infiltration Basin #2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628093.604,6339,277
91.052,66313293.654,6809,510
91.102,69726693.704,7279,745
91.152,73240293.754,7749,983
91.202,76653993.804,82110,223
91.252,80167993.854,86910,468
91.302,83682093.904,91610,710
91.352,87096293.954,96310,957
91.402,9051,10794.005,01011,206
91.452,9391,25394.055,05311,458
91.502,9741,40194.105,09611,711
91.553,0091,55094.155,13811,967
91.603,0431,70194.205,18112,225
91.653,0781,85494.255,22412,488
91.703,1122,00994.305,26712,748
91.753,1472,16694.355,31013,012
91.803,1822,32494.405,35213,278
91.853,2162,48494.455,39513,547
91.903,2512,64594.505,43813,818
91.953,2852,809
92.003,3202,974
92.053,3573,141
92.103,3953,310
92.153,4323,480
92.203,4693,653
92.253,5073,827
92.303,5444,004
92.353,5814,182
92.403,6194,362
92.453,6564,544
92.503,6944,727
92.553,7314,913
92.603,7685,100
92.653,8065,290
92.703,8435,481
92.753,8805,674
92.803,9185,869
92.853,9556,066
92.903,9926,265
92.954,0306,465
93.004,0676,668
93.054,1146,872
93.104,1617,079
93.154,2087,288
93.204,2567,500
93.254,3037,714
93.304,3507,930
93.354,3978,149
93.404,4448,370
93.454,4918,593
93.504,5398,819
93.554,5869,047
===== PAGE 147 ===== ## Summary for Link 185L: POA Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth > 0.54" for 10-Year event Inflow = 4.64 cfs @ 12.13 hrs, Volume= 24,056 cf Primary = 4.64 cfs @ 12.13 hrs, Volume= 24,056 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs ## Link 185L: POA
Image
===== PAGE 148 ===== Ime span=0.00-/2.00 hrs, dt=0.01 hrs, /201 points Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 170S: DA P1 (Impervious) Runoff Area=31,625 sf 100.00% Impervious Runoff Depth=6.44" Flow Length=450' Tc=3.0 min CN=0/98 Runoff=4.60 cfs 16,975 cf Subcatchment 174S: DA P2 (Impervious) Runoff Area=23,470 sf 100.00% Impervious Runoff Depth=6.44" Flow Length=450' Tc=4.9 min CN=0/98 Runoff=3.00 cfs 12,598 cf Subcatchment 178S: DA P3 (Pervious) Runoff Area=62,973 sf 0.00% Impervious Runoff Depth=0.66" Flow Length=316' Slope=0.0200'/' Tc=13.1 min CN=39/0 Runoff=0.27 cfs 3,449 cf Subcatchment 179S: DA P0 Pervious Runoff Area=336,250 sf 0.00% Impervious Runoff Depth=0.30" Flow Length=679' Tc=49.8 min CN=33/0 Runoff=0.28 cfs 8,387 cf Subcatchment 180S: DA P4 (Pervious) Runoff Area=76,971 sf 0.00% Impervious Runoff Depth=0.66" Flow Length=196' Slope=0.0100'/' Tc=14.8 min CN=39/0 Runoff=0.32 cfs 4,216 cf Subcatchment 181S: DA P6 (Impervious) Runoff Area=5,250 sf 100.00% Impervious Runoff Depth=6.44" Flow Length=150' Tc=1.4 min CN=0/98 Runoff=0.84 cfs 2,818 cf Pond 183P: WQ Infiltration Basin #1 Peak Elevation=99.23' Storage=16,706 cfs Inflow=4.63 cfs 21,191 cf Discarded=0.00 cfs 0 cf Primary=5.91 cfs 17,388 cf Outflow=5.91 cfs 17,388 cf Pond 184P: WQ Infiltration Basin #2 Peak Elevation=99.85' Storage=13,818 cfs Inflow=3.06 cfs 16,047 cf Discarded=0.00 cfs 0 cf Primary=1.97 cfs 12,492 cfs Outflow=1.97 cfs 12,492 cf Link 185L: POA Inflow=7.07 cfs 41,085 cf Primary=7.07 cfs 41,085 cf Total Runoff Area = 536,539 sf Runoff Volume = 48,444 cf Average Runoff Depth = 1.08" 88.75% Pervious = 476,194 sf 11.25% Impervious = 60,345 sf ===== PAGE 149 ===== # Summary for Subcatchment 170S: DA P1 (Impervious) Runoff = 4.60 cfs @ 12.11 hrs, Volume= 16,975 cf, Depth= 6.44" Routed to Pond 183P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 25-Year Rainfall=6.68"
Area (sf)CNDescription
31,62598Paved parking, HSG A
31,62598100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
1.21000.02001.42Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
1.83500.02503.21Shallow Concentrated Flow, Paved Kv= 20.3 fps
3.0450Total
Subcatchment 170S: DA P1 (Impervious)
Image
===== PAGE 150 ===== # Summary for Subcatchment 174S: DA P2 (Impervious) Runoff = 3.00 cfs @ 12.13 hrs, Volume= 12,598 cf, Depth= 6.44" Routed to Pond 184P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 25-Year Rainfall=6.68"
Area (sf)CNDescription
23,47098Paved parking, HSG A
23,47098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)
0.81000.05002.05Sheet Flow, Smooth surfaces n= 0.011 P2= 3.42"
4.13500.00501.44Shallow Concentrated Flow, Paved Kv= 20.3 fps
4.9450Total
Subcatchment 174S: DA P2 (Impervious)
Image
===== PAGE 151 ===== # Summary for Subcatchment 178S: DA P3 (Pervious) Runoff = 0.27 cfs @ 12.54 hrs, Volume= 3,449 cf, Depth= 0.66" Routed to Pond 184P : WQ Infiltration Basin #2 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 25-Year Rainfall=6.68"
Area (sf)CNDescription
62,97339>75% Grass cover, Good, HSG A
62,97339100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
9.51000.02000.18Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
3.62160.02000.99Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
13.1316Total
Subcatchment 178S: DA P3 (Pervious)
Image
4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 152 ===== # Summary for Subcatchment 179S: DA P0 Pervious Runoff = 0.28 cfs @ 14.71 hrs, Volume= Routed to Link 185L : POA 8,387 cf, Depth= 0.30" Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 25-Year Rainfall=6.68"
Area (sf)CNDescription
236,87930Woods, Good, HSG A
99,37139>75% Grass cover, Good, HSG A
336,25033Weighted Average
336,25033100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
36.21000.0050 0.05
13.65790.0200 0.71
49.8679Total
Subcatchment 179S: DA P0 Pervious
Image
===== PAGE 153 ===== # Summary for Subcatchment 180S: DA P4 (Pervious) Runoff = 0.32 cfs @ 12.57 hrs, Volume= 4,216 cf, Depth= 0.66" Routed to Pond 183P : WQ Infiltration Basin #1 Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 25-Year Rainfall=6.68"
Area (sf)CNDescription
76,97139>75% Grass cover, Good, HSG A
76,97139100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
12.51000.01000.13Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3960.01000.70Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8196Total
Subcatchment 180S: DA P4 (Pervious)
Hydrograph
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 154 ===== # Summary for Subcatchment 181S: DA P6 (Impervious) Runoff = 0.84 cfs @ 12.10 hrs, Volume= 2,818 cf, Depth= 6.44" Routed to Link 185L : POA Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 25-Year Rainfall=6.68"
Area (sf)CNDescription
5,25098Paved parking, HSG A
5,25098100.00% Impervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
0.81000.05002.05Sheet Flow,
0.6500.00501.44Smooth surfaces n= 0.011 P2= 3.42"
Shallow Concentrated Flow,
Paved Kv= 20.3 fps
1.4150Total
Subcatchment 181S: DA P6 (Impervious)
Hydrograph
Image
===== PAGE 155 ===== ## Summary for Pond 183P: WQ Infiltration Basin #1
Inflow Area = 108,596 sf, 29.12% Impervious, Inflow Depth = 2.34" for 25-Year event
Inflow = 4.63 cfs @ 12.11 hrs, Volume= 21,191 cf
Outflow = 5.91 cfs @ 12.12 hrs, Volume= 17,388 cf, Atten= 0%, Lag= 0.5 min
Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0 cf
Primary = 5.91 cfs @ 12.12 hrs, Volume= 17,388 cf
Routed to Link 185L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 97.00' Surf.Area= 6,008 sf Storage= 10,212 cf Peak Elev= 99.23' @ 12.12 hrs Surf.Area= 6,981 sf Storage= 16,706 cf (6,495 cf above start)
Plug-Flow detention time= 627.7 min calculated for 7,176 cf (34% of inflow)
Plug-Flow detention time= 627.7 min calculated for 7,176 cf (34% of inflow) Center-of-Mass det. time= 157.8 min (947.5 - 789.7)
VolumeInvertAvail.StorageStorage Description
#195.00'16,706 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
95.004,23100
96.005,0924,6624,662
97.006,0085,55010,212
98.006,9816,49516,706
DeviceRoutingInvertOutlet Devices
#1Primary97.60'15.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 95.00' / 97.60' S= -0.0743'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 1.23 sf
#2Device 197.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded95.00'3.100 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=97.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=5.86 cfs @ 12.12 hrs HW=99.21' (Free Discharge) 1=Culvert to Subsurface Basin (Inlet Controls 5.86 cfs @ 4.77 fps) 2=Sharp-Crested Rectangular Weir (Passes 5.86 cfs of 36.01 cfs potential flow) ===== PAGE 156 =====
Pond 183P: WQ Infiltration Basin #1
Image
Flow (cfs) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 157 =====
Stage-Discharge for Pond 183P: WQ Infiltration Basin #1
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
95.000.000.000.0097.600.000.000.00
95.050.000.000.0097.650.010.000.01
95.100.000.000.0097.700.050.000.05
95.150.000.000.0097.750.110.000.11
95.200.000.000.0097.800.190.000.19
95.250.000.000.0097.850.300.000.30
95.300.000.000.0097.900.420.000.42
95.350.000.000.0097.950.570.000.57
95.400.000.000.0098.000.730.000.73
95.450.000.000.0098.050.910.000.91
95.500.000.000.0098.101.100.001.10
95.550.000.000.0098.151.310.001.31
95.600.000.000.0098.201.540.001.54
95.650.000.000.0098.251.770.001.77
95.700.000.000.0098.302.010.002.01
95.750.000.000.0098.352.270.002.27
95.800.000.000.0098.402.530.002.53
95.850.000.000.0098.452.790.002.79
95.900.000.000.0098.503.060.003.06
95.950.000.000.0098.553.320.003.32
96.000.000.000.0098.603.580.003.58
96.050.000.000.0098.653.840.003.84
96.100.000.000.0098.704.080.004.08
96.150.000.000.0098.754.310.004.31
96.200.000.000.0098.804.520.004.52
96.250.000.000.0098.854.670.004.67
96.300.000.000.0098.904.850.004.85
96.350.000.000.0098.955.030.005.03
96.400.000.000.0099.005.200.005.20
96.450.000.000.0099.055.370.005.37
96.500.000.000.0099.105.530.005.53
96.550.000.000.0099.155.680.005.68
96.600.000.000.0099.205.830.005.83
96.650.000.000.00
96.700.000.000.00
96.750.000.000.00
96.800.000.000.00
96.850.000.000.00
96.900.000.000.00
96.950.000.000.00
97.000.000.000.00
97.050.000.000.00
97.100.000.000.00
97.150.000.000.00
97.200.000.000.00
97.250.000.000.00
97.300.000.000.00
97.350.000.000.00
97.400.000.000.00
97.450.000.000.00
97.500.000.000.00
97.550.000.000.00
===== PAGE 158 =====
Stage-Area-Storage for Pond 183P: WQ Infiltration Basin #1
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
95.004,231097.606,59213,991
95.054,27421397.656,64014,322
95.104,31742797.706,68914,655
95.154,36064497.756,73814,991
95.204,40386397.806,78615,329
95.254,4461,08597.856,83515,670
95.304,4891,30897.906,88416,013
95.354,5321,53497.956,93216,358
95.404,5751,76198.006,98116,706
95.454,6181,99198.056,98116,706
95.504,6622,22398.106,98116,706
95.554,7052,45798.156,98116,706
95.604,7482,69498.206,98116,706
95.654,7912,93298.256,98116,706
95.704,8343,17398.306,98116,706
95.754,8773,41598.356,98116,706
95.804,9203,66098.406,98116,706
95.854,9633,90798.456,98116,706
95.905,0064,15798.506,98116,706
95.955,0494,40898.556,98116,706
96.005,0924,66298.606,98116,706
96.055,1384,91798.656,98116,706
96.105,1845,17598.706,98116,706
96.155,2295,43698.756,98116,706
96.205,2755,69898.806,98116,706
96.255,3215,96398.856,98116,706
96.305,3676,23098.906,98116,706
96.355,4136,50098.956,98116,706
96.405,4586,77299.006,98116,706
96.455,5047,04699.056,98116,706
96.505,5507,32299.106,98116,706
96.555,5967,60199.156,98116,706
96.605,6427,88299.206,98116,706
96.655,6878,165
96.705,7338,450
96.755,7798,738
96.805,8259,028
96.855,8719,321
96.905,9169,615
96.955,9629,912
97.006,00810,212
97.056,05710,513
97.106,10510,817
97.156,15411,124
97.206,20311,433
97.256,25111,744
97.306,30012,058
97.356,34912,374
97.406,39712,693
97.456,44613,014
97.506,49513,337
97.556,54313,663
===== PAGE 159 ===== ## Summary for Pond 184P: WQ Infiltration Basin #2
Inflow Area =86,443 sf,27.15% Impervious,Inflow Depth =2.23" for 25-Year event
Inflow =3.06 cfs @12.13 hrs,Volume=16,047 cf
Outflow =1.97 cfs @12.37 hrs,Volume=12,492 cf, Atten= 35%, Lag= 14.4 min
Discarded =0.00 cfs @0.00 hrs,Volume=0 cf
Primary =1.97 cfs @12.37 hrs,Volume=12,492 cf
Routed to Link 185L : POA
Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Starting Elev= 93.00' Surf.Area= 4,067 sf Storage= 6,668 cf Peak Elev= 99.85' @ 12.37 hrs Surf.Area= 5,438 sf Storage= 13,818 cf (7,151 cf above start) Plug-Flow detention time= 617.6 min calculated for 5,824 cf (36% of inflow) Center-of-Mass det. time= 196.8 min ( 991.9 - 795.2 )
VolumeInvertAvail.StorageStorage Description
#191.00'13,818 cfCustom Stage Data (Prismatic) Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
91.002,62800
92.003,3202,9742,974
93.004,0673,6946,668
94.005,0104,53911,206
94.505,4382,61213,818
DeviceRoutingInvertOutlet Devices
#1Primary93.80'6.0" Round Culvert to Subsurface Basin L= 35.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 92.00' / 93.80' S= -0.0514'' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.20 sf
#2Device 193.00'4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#3Discarded91.00'1.050 in/hr Exfiltration X 0.00 over Surface area
Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=93.00' (Free Discharge) 3=Exfiltration (Controls 0.00 cfs) Primary OutFlow Max=1.96 cfs @ 12.37 hrs HW=99.75' (Free Discharge) 1=Culvert to Subsurface Basin (Outlet Controls 1.96 cfs @ 9.97 fps) 2=Sharp-Crested Rectangular Weir (Passes 1.96 cfs of 149.56 cfs potential flow) ===== PAGE 160 =====
Pond 184P: WQ Infiltration Basin #2
Image
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) ===== PAGE 161 =====
Stage-Discharge for Pond 184P: WQ Infiltration Basin #2
Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)Elevation (feet)Discharge (cfs)Discarded (cfs)Primary (cfs)
91.000.000.000.0096.201.240.001.24
91.100.000.000.0096.301.270.001.27
91.200.000.000.0096.401.290.001.29
91.300.000.000.0096.501.320.001.32
91.400.000.000.0096.601.340.001.34
91.500.000.000.0096.701.370.001.37
91.600.000.000.0096.801.390.001.39
91.700.000.000.0096.901.410.001.41
91.800.000.000.0097.001.430.001.43
91.900.000.000.0097.101.460.001.46
92.000.000.000.0097.201.480.001.48
92.100.000.000.0097.301.500.001.50
92.200.000.000.0097.401.520.001.52
92.300.000.000.0097.501.540.001.54
92.400.000.000.0097.601.560.001.56
92.500.000.000.0097.701.580.001.58
92.600.000.000.0097.801.600.001.60
92.700.000.000.0097.901.620.001.62
92.800.000.000.0098.001.640.001.64
92.900.000.000.0098.101.660.001.66
93.000.000.000.0098.201.680.001.68
93.100.000.000.0098.301.700.001.70
93.200.000.000.0098.401.720.001.72
93.300.000.000.0098.501.740.001.74
93.400.000.000.0098.601.760.001.76
93.500.000.000.0098.701.780.001.78
93.600.000.000.0098.801.790.001.79
93.700.000.000.0098.901.810.001.81
93.800.000.000.0099.001.830.001.83
93.900.030.000.0399.101.850.001.85
94.000.110.000.1199.201.860.001.86
94.100.230.000.2399.301.880.001.88
94.200.360.000.3699.401.900.001.90
94.300.470.000.4799.501.920.001.92
94.400.560.000.5699.601.930.001.93
94.500.630.000.6399.701.950.001.95
94.600.700.000.7099.801.960.001.96
94.700.760.000.76
94.800.800.000.80
94.900.840.000.84
95.000.880.000.88
95.100.910.000.91
95.200.950.000.95
95.300.980.000.98
95.401.010.001.01
95.501.050.001.05
95.601.080.001.08
95.701.110.001.11
95.801.130.001.13
95.901.160.001.16
96.001.190.001.19
96.101.220.001.22
===== PAGE 162 =====
Stage-Area-Storage for Pond 184P: WQ Infiltration Basin #2
Elevation (feet)Surface (sq-ft)Storage (cubic-feet)Elevation (feet)Surface (sq-ft)Storage (cubic-feet)
91.002,628096.205,43813,818
91.102,69726696.305,43813,818
91.202,76653996.405,43813,818
91.302,83682096.505,43813,818
91.402,9051,10796.605,43813,818
91.502,9741,40196.705,43813,818
91.603,0431,70196.805,43813,818
91.703,1122,00996.905,43813,818
91.803,1822,32497.005,43813,818
91.903,2512,64597.105,43813,818
92.003,3202,97497.205,43813,818
92.103,3953,31097.305,43813,818
92.203,4693,65397.405,43813,818
92.303,5444,00497.505,43813,818
92.403,6194,36297.605,43813,818
92.503,6944,72797.705,43813,818
92.603,7685,10097.805,43813,818
92.703,8435,48197.905,43813,818
92.803,9185,86998.005,43813,818
92.903,9926,26598.105,43813,818
93.004,0676,66898.205,43813,818
93.104,1617,07998.305,43813,818
93.204,2567,50098.405,43813,818
93.304,3507,93098.505,43813,818
93.404,4448,37098.605,43813,818
93.504,5398,81998.705,43813,818
93.604,6339,27798.805,43813,818
93.704,7279,74598.905,43813,818
93.804,82110,22399.005,43813,818
93.904,91610,71099.105,43813,818
94.005,01011,20699.205,43813,818
94.105,09611,71199.305,43813,818
94.205,18112,22599.405,43813,818
94.305,26712,74899.505,43813,818
94.405,35213,27899.605,43813,818
94.505,43813,81899.705,43813,818
94.605,43813,81899.805,43813,818
94.705,43813,818
94.805,43813,818
94.905,43813,818
95.005,43813,818
95.105,43813,818
95.205,43813,818
95.305,43813,818
95.405,43813,818
95.505,43813,818
95.605,43813,818
95.705,43813,818
95.805,43813,818
95.905,43813,818
96.005,43813,818
96.105,43813,818
===== PAGE 163 ===== ## Summary for Link 185L: POA Inflow Area = 536,539 sf, 11.25% Impervious, Inflow Depth = 0.92" for 25-Year event Inflow = 7.07 cfs @ 12.10 hrs, Volume= 41,085 cf Primary = 7.07 cfs @ 12.10 hrs, Volume= 41,085 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.01 hrs ## Link 185L: POA
Hydrograph
Image
===== PAGE 164 ===== ## APPENDIX G ===== PAGE 165 ===== Duration of infiltration period, t = (Volume of runoff to be infiltrated (cf) × 12 in/ft3)/(Infiltration area (sf)) × Recharge rate (in/hr)
Basininfiltration volume (cf)Basin Surface Area (sf)Recharge Rate (in/hr)t (hr)
Surface #13490142313.131.9
Surface #21858626281.0580.8
Subsurface (TYP)30805333.2521.3
===== PAGE 166 =====
Input Values
Input values
3.10RRecharge rate (permeability rate) (in/hr)
0.150SySpecific yield, Sy (dimensionless)
default value is 0.15; max value is 0.2 provided that a lab test data is submitted
50.00KhKh = 5xRecharge Rate (R) in the cost plan; Kh=R outside the coastal plan
19.300x1/2 length of basin (x direction, in feet)
54.800y1/2 width of basin (y direction, in feet)
31.90tDuration of infiltration period (hours)
10.00hi(0)Initial thickness of saturated zone (feet)
15.901h(max)Maximum thickness of saturated zone (beneath center of basin at end of infiltration period)
5.901Δ h(max)Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Image
Image
## Disclaimer This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding Beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions. ===== PAGE 167 =====
Input Values
Input values
1.05R
0.150Sy
50.00Kh
14.725x
44.625y
80.80t
10.00hi(0)
11.941h(max)
1.941Δ h(max)
Image
Image
## Disclaimer This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding Beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions. ===== PAGE 168 =====
Input Values
Input values
3.25RRecharge rate (permeability rate) (in/hr)
0.150SySpecific yield, Sy (dimensionless)
default value is 0.15; max value is 0.2 provided that a lab test data is submitted
50.00KhKh = 5xRecharge Rate (R) in the cost plan; Kh=R outside the coastal plan
20.500x1/2 length of basin (x direction, in feet)
6.500y1/2 width of basin (y direction, in feet)
21.30tDuration of infiltration period (hours)
10.00hi(0)Initial thickness of saturated zone (feet)
11.309h(max)Maximum thickness of saturated zone (beneath center of basin at end of infiltration period)
1.309Δ h(max)Maximum groundwater mounding (beneath center of basin at end of infiltration period)
Image
Image
## Disclaimer This spreadsheet solving the Hantush (1967) equation for ground-water mounding beneath an infiltration basin is made available to the general public as a convenience for those wishing to replicate values documented in the USGS Scientific Investigations Report 2010-5102 "Groundwater Mounding Beneath Hypothetical Stormwater Infiltration Basins" or to calculate values based on user-specified site conditions. Any changes made to the spreadsheet (other than values identified as user-specified) after transmission from the USGS could have unintended, undesirable consequences. These consequences could include, but may not be limited to: erroneous output, numerical instabilities, and violations of underlying assumptions that are inherent in results presented in the accompanying USGS published report. The USGS assumes no responsibility for the consequences of any changes made to the spreadsheet. If changes are made to the spreadsheet, the user is responsible for documenting the changes and justifying the results and conclusions. ===== PAGE 169 ===== ## APPENDIX H ===== PAGE 170 ===== # Haler Consulting LLC 640 Herman Road Unit 1 Jackson, New Jersey 08527 September 4, 2025 ## SOIL LOG Owner/Location: Prop. subdivision 102 Sams Road Jackson, NJ Test Pit #1 9-04-25 el. 98.0 0'- 12" 10YR3/1 Very Dark Gray, Loose, SG, Topsoil 12"-50" 10YR5/6 Yellowish Brown, Medium, Loose, Gravelly sand 50"-80" 7.5YR6/6 Reddish Yellow, Medium, Loose, Loamy Sand PT-1 @ 4.5 FEET = 12.2 IN/HR(K4) 80”–100” 7.5YR6/8 Reddish Yellow, Loose, Very Fine, Granular, Sand Mottles @ 87 inches Water @92 inches ## NOTE: Estimated Seasonal High Water Table @ 87 inches (el. 90.3).
Image
· Eric Halpert (NJPE#55771) ===== PAGE 171 ===== # Haler Consulting LLC 640 Herman Road Unit 1 Jackson, New Jersey 08527 September 4, 2025 ## SOIL LOG Owner/Location: Prop. subdivision 102 Sams Road Jackson, NJ Test Pit #2 9-04-25 el. 96.8 0'- 10" 10YR3/3 Dark Brown, Loose, SG, Topsoil 12"- 40" 10YR5/8 Yellowish Brown, Medium, Loose, Gravelly sand 40"- 75" 7.5YR4/6 Strong Brown, Medium, Loose, Loamy Sand PT-2 @ 4.5 FEET = 14.5 IN/HR(K4) 75”–100” 7.5YR4/4 Brown, Loose, Very Fine, Granular, Sand Mottles @ 85 inches Water @95 inches ## NOTE: Estimated Seasonal High Water Table @ 85 inches (el. 89.7).
Image
· Eric Halpert (NJPE#55771) ===== PAGE 172 =====
Image
(IN FEET) 1 inch = 150 ft. TEST PIT LOCATION MAP PRELIMINARY AND MAJOR SUBDIVISION 102 SAMS ROAD BLOCK 20101 LOT 29&30 TOWNSHIP OF JACKSON, OCEAN COUNTY, NEW JERSEY APPLICANT: SHAKKI LLC
Image
HALER CONSULTING SITE ENGINEERING 640 HERMAN ROAD, UNIT 1. JACKSON, NEW JERSEY 08527 PH.(732) 806-7541 F.(732) 806-7439 OFFICE@HALERCONSULTING.COM COA 24GA28321300
Image
PROJECT NO. 25-018 ERIC HALPERT SCALE 1" = 150' PROFESSIONAL ENGINEER AND PLANNER NJ PE LIC. NO. 55771 NJ PP LIC. NO. 6488 DATE 10-06-2025 SHEET NO. 1 OF 1 ===== PAGE 173 =====
Image
Image
===== PAGE 174 ===== ## MAP LEGEND Area of Interest (AOI) Soils ☐ C
Image
## MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Ocean County, New Jersey Survey Area Data: Version 23, Aug 28, 2025 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 4, 2022—Jul 22, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. ===== PAGE 175 ===== ## Hydrologic Soil Group
Map unit symbolMap unit nameRatingAcres in AOIPercent of AOI
DocBODowner loamy sand, 0 to 5 percent slopes, Northern Tidewater AreaA5.529.5%
MumAMullica sandy loam, 0 to 2 percent slopesA/D2.815.0%
SacBOSassafras sandy loam, 2 to 5 percent slopes, Northern Tidewater AreaB10.455.5%
Totals for Area of Interest18.7100.0%
===== PAGE 176 ===== ## Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. ## Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher ===== PAGE 177 =====
Image
74° 16' 58" W Soil Map—Ocean County, New Jersey 74° 16' 40" W ===== PAGE 178 ===== ## MAP LEGEND
Area of Interest (AOI)Area of Interest (AOI)Spoil Area
ImageArea of Interest (AOI)Stony Spot
Soils
ImageSoil Map Unit PolygonsImage Very Stony Spot
ImageSoil Map Unit LinesImage Wet Spot
ImageSoil Map Unit PointsOther
Special Point Features
ImageBlowoutWater Features
ImageBorrow PitStream and Canals
ImageClay SpotTransportation
◇Closed DepressionRails
✗Gravel PitInterstate Highways
⁂Gravelly SpotUS Routes
❄LandfillMajor Roads
ImageLava FlowLocal Roads
ImageMarsh or swampBackground
❄Mine or QuarryAerial Photography
ImageMiscellaneous Water
ImagePerennial Water
ImageRock Outcrop
ImageSaline Spot
❄Sandy Spot
ImageSeverely Eroded Spot
ImageSinkhole
ImageSlide or Slip
ImageSodic Spot
## MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Ocean County, New Jersey Survey Area Data: Version 23, Aug 28, 2025 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 4, 2022—Jul 22, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. ===== PAGE 179 ===== ## Map Unit Legend
Map Unit SymbolMap Unit NameAcres in AOIPercent of AOI
DocBODowner loamy sand, 0 to 5 percent slopes, Northern Tidewater Area5.529.5%
MumAMullica sandy loam, 0 to 2 percent slopes2.815.0%
SacBOSassafras sandy loam, 2 to 5 percent slopes, Northern Tidewater Area10.455.5%
Totals for Area of Interest18.7100.0%
===== PAGE 180 ===== ## APPENDIX I ===== PAGE 181 ===== GRAPHIC SCALE ===== PAGE 182 ===== PH.(732) 806-7541 F.(732) 806-7439 OFFICE@HALERCONSULTING.COM COA 24GA28321300 GRAPHIC SCALE ===== PAGE 183 ===== GRAPHIC SCALE COLLECTION DRAINAGE AREA MAP PLAN PRELIMINARY AND MAJOR SUBDIVISION 102 SAMS ROAD BLOCK 20101 LOT 29&30 TOWNSHIP OF JACKSON, OCEAN COUNTY, NEW JERSEY APPLICANT: SHAKKI LLC PROJECT NO
Image
Image
Image