Inflow Area = 70,567 sf, 24.69% Impervious, Inflow Depth = 0.98" for 2 YR-F event Inflow = 1.58 cfs @ 12.11 hrs, Volume = 5,747 cf Outflow = 0.17 cfs @ 12.89 hrs, Volume = 4,241 cf, Atten = 89%, Lag = 46.7 min Primary = 0.17 cfs @ 12.89 hrs, Volume = 4,241 cf 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= 92.21' @ 12.89 hrs Surf.Area= 1,500 sf Storage= 3,321 cf Plug-Flow detention time= 336.9 min calculated for 4,241 cf (74% of inflow) Center-of-Mass det. time= 229.7 min ( 997.3 - 767.6 )
| 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=0.17 cfs @ 12.89 hrs HW=92.21' TW=87.00' (Dynamic Tailwater) 3=Culvert (Passes 0.17 cfs of 9.27 cfs potential flow) 1=Orifice (Orifice Controls 0.17 cfs @ 5.07 fps) 2=Grate ( Controls 0.00 cfs) | |||
| Pond 5P: BIORETENTION BASIN 1A Orifice | |||