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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)