| Inflow Area = | 70,567 sf, | 24.69% Impervious, | Inflow Depth = 4.92" for 100 YR-F event |
|---|
| Inflow = | 5.50 cfs @ | 12.11 hrs, | Volume= 28,914 cf |
|---|
| Outflow = | 4.12 cfs @ | 12.18 hrs, | Volume= 27,407 cf, Atten= 25%, Lag= 4.0 min |
|---|
| Primary = | 4.12 cfs @ | 12.18 hrs, | Volume= 27,407 cf |
|---|
| Routed to Bond 2B : Subsurface Infiltration Basin 1 |
Routed to Pond 2P : Subsurface Infiltration Basin 1
Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs
Peak Elev= 95.17' @ 12.18 hrs Surf.Area= 1,500 sf Storage= 7,760 cf
Plug-Flow detention time= 232.3 min calculated for 27,407 cf (95% of inflow)
Center-of-Mass det. time= 201.5 min (1,013.2 - 811.7)
| Volume | Invert | Avail.Storage | Storage Description |
|---|
| #1 | 90.00' | 8,250 cf | Custom Stage Data (Prismatic) | Listed below (Recalc) |
| Elevation
(feet) | Surf.Area
(sq-ft) | Inc.Store
(cubic-feet) | Cum.Store
(cubic-feet) |
| 90.00 | 1,500 | 0 | 0 |
| 95.50 | 1,500 | 8,250 | 8,250 |
| Device | Routing | Invert | Outlet Devices |
|---|
| #1 | Device 3 | 91.00' | 2.5" Vert. Orifice C = 0.600 Limited to weir flow at low heads |
|---|
| #2 | Device 3 | 95.00' | 48.0" x 48.0" Horiz. Grate C = 0.600 Limited to weir flow at low heads |
|---|
| #3 | Primary | 87.48' | 12.0" Round Culvert\n L = 28.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 87.48'/87.00' $ S = 0.0171'/' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79sf $ |
|---|
| Primary OutFlow Max=4.11 cfs @ 12.18 hrs HW=95.17' TW=87.79' (Dynamic Tailwater)
3=Culvert (Passes 4.11 cfs of 12.09 cfs potential flow)
1=Orifice (Orifice Controls 0.33 cfs @ 9.71 fps)
2=Grate (Weir Controls 3.78 cfs @ 1.36 fps) |
| Pond 5P: BIORETENTION BASIN 1A
Orifice |