Inflow Area = 0.460 ac, 100.00% Impervious, Inflow Depth > 8.30" for 100 YEAR event Inflow = 4.15 cfs @ 12.10 hrs, Volume= 0.318 af Outflow = 1.49 cfs @ 12.27 hrs, Volume= 0.228 af, Atten= 64%, Lag= 10.6 min Discarded = 0.17 cfs @ 12.27 hrs, Volume= 0.153 af Primary = 1.32 cfs @ 12.27 hrs, Volume= 0.075 af Routed to Reach 10 : COMPOSITE Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 113.57' @ 12.27 hrs Surf.Area= 0.085 ac Storage= 0.132 af Plug-Flow detention time= 134.7 min calculated for 0.228 af (72% of inflow) Center-of-Mass det. time= 64.8 min (797.2 - 732.4)
| 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 |
0.139 af Total Available Storage
| Device | Routing | Invert | Outlet Devices |
|---|---|---|---|
| #1 | Discarded | 110.80' | 1.000 in/hr Exfiltration 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=0.17 cfs @ 12.27 hrs HW=113.56' (Free Discharge) 1=Exfiltration (Controls 0.17 cfs)
Primary OutFlow Max=1.30 cfs @ 12.27 hrs HW=113.56' (Free Discharge) 2=Orifice/Grate (Orifice Controls 1.30 cfs @ 2.61 fps)