Inflow Area = 0.460 ac, 58.70% Impervious, Inflow Depth > 1.71" for 2 YEAR event
Outflow = 0.93 cfs @ 12.08 hrs, Volume= 0.066 af
Discarded = 0.44 cfs @ 12.18 hrs, Volume= 0.064 af, Atten= 53%, Lag= 5.8 min
Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af
Routed to Reach 10 : COMPOSITE
Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Starting Elev= 109.00' Surf.Area= 0.064 ac Storage= 0.052 af
Peak Elev= 109.35' @ 12.18 hrs Surf.Area= 0.064 ac Storage= 0.068 af (0.016 af above start)
Plug-Flow detention time= 491.1 min calculated for 0.011 af (17% of inflow)
Plug-Flow detention time= 491.1 min calculated for 0.011 af (17% of inflow) Center-of-Mass det. time= 34.4 min (770.5 - 736.1)
| Volume | Invert | Avail.Storage | Storage Description |
|---|---|---|---|
| #1A | 107.50' | 0.048 af | 41.95'W x 66.33'L x 3.00'H Field A 0.192 af Overall - 0.072 af Embedded = 0.120 af x 40.0% Voids |
| #2A | 107.83' | 0.057 af | ADS N-12 24" x 36 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 36 Chambers in 12 Rows 40.28' Header x 3.10 sf x 2 = 249.8 cf Inside |
0.105 af Total Available Storage
| Device | Routing | Invert | Outlet Devices |
|---|---|---|---|
| #1 | Discarded | 107.50' | 1.000 in/hr Exfiltration X 0.00 over Surface area Conductivity to Groundwater Elevation = 105.00' |
| #2 | Primary | 109.00' | 8.0" W x 4.0" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads |
| Discarded OutFlow | Max=0.00 cfs @ 5.00 hrs | HW=109.00' (Free Discharge) | |
| 1=Exfiltration ( Controls 0.00 cfs) | |||
| Primary OutFlow | Max=0.44 cfs @ 12.18 hrs | HW=109.35' (Free Discharge) | |
| 2=Orifice/Grate (Orifice Controls 0.44 cfs @ 1.96 fps) | |||