Inflow Area = 0.460 ac,100.00% Impervious, Inflow Depth > 4.66" for 10 YEAR event
Inflow = 2.35 cfs @ 12.10 hrs, Volume= 0.179 af
Outflow = 1.59 cfs @ 12.17 hrs, Volume= 0.176 af, Atten= 32%, Lag= 4.5 min
Discarded = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af
Primary = 1.59 cfs @ 12.17 hrs, Volume= 0.176 af
Routed to Reach 10 : COMPOSITE
Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 113.00' Surf.Area= 0.085 ac Storage= 0.111 af Peak Elev= 113.70' @ 12.17 hrs Surf.Area= 0.085 ac Storage= 0.136 af (0.025 af above start)
Plug-Flow detention time= 288.6 min calculated for 0.065 af (36% of inflow)
Plug-Flow detention time= 288.6 min calculated for 0.065 af (36% of inflow) Center-of-Mass det. time= 18.8 min (753.0 - 734.2)
| Volume | Invert | Avail.Storage | Storage Description |
|---|
| #1A | 110.80' | 0.063 af | 55.75'W x 66.33'L x 3.00'H Field A
0.255 af Overall - 0.096 af Embedded = 0.159 af x 40.0% Voids |
| #2A | 111.13' | 0.076 af | ADS N-12 24" x 48 Inside #1
Inside = 23.8"W x 23.8"H => 3.10 sf x 20.00'L = 62.0 cf
Outside = 28.0"W x 28.0"H => 3.92 sf x 20.00'L = 78.4 cf
48 Chambers in 16 Rows
54.08' Header x 3.10 sf x 2 = 335.3 cf Inside |
| Device | Routing | Invert | Outlet Devices |
|---|
| #1 | Discarded | 110.80' | 1.000 in/hr Exfiltration X 0.00 over Surface area
Conductivity to Groundwater Elevation = 108.00' |
| #2 | Primary | 113.00' | 12.0" W x 6.0" H Vert. Orifice/Grate C= 0.600
Limited to weir flow at low heads |
| Discarded OutFlow | Max=0.00 cfs @ 5.00 hrs | HW=113.00' (Free Discharge) |
| 1=Exfiltration ( Controls 0.00 cfs) |
| Primary OutFlow | Max=1.57 cfs @ 12.17 hrs | HW=113.69' (Free Discharge) |
| 2=Orifice/Grate (Orifice Controls 1.57 cfs @ 3.15 fps) |