| Inflow Area = | 0.460 ac,100.00% Impervious, Inflow Depth > 2.92" for 2 YEAR event |
|---|---|
| Inflow = | 1.48 cfs @ 12.10 hrs, Volume= 0.112 af |
| Outflow = | 1.09 cfs @ 12.16 hrs, Volume= 0.110 af, Atten= 27%, Lag= 4.0 min |
| Discarded = | 0.00 cfs @ 5.00 hrs, Volume= 0.000 af |
| Primary = | 1.09 cfs @ 12.16 hrs, Volume= 0.110 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= 113.49' @ 12.16 hrs Surf.Area= 0.085 ac Storage= 0.129 af (0.018 af above start)
Plug-Flow detention time = (not calculated: initial storage exceeds outflow) Center-of-Mass det. time = 22.4 min (759.6 - 737.2)
| 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 |
0.139 af Total Available Storage
| 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=1.07 cfs @ 12.16 hrs | HW=113.48' (Free Discharge) | |
| 2=Orifice/Grate (Orifice Controls 1.07 cfs @ 2.23 fps) | |||