Summary for Pond 7P: BIORENTION BASIN 2A

Inflow Area = 22,431 sf, 16.50% Impervious, Inflow Depth = 0.53" for 2 YR-C event Inflow = 0.30 cfs @ 12.09 hrs, Volume= 991 cf Outflow = 0.30 cfs @ 12.10 hrs, Volume= 944 cf, Atten= 1%, Lag= 0.5 min Primary = 0.30 cfs @ 12.10 hrs, Volume= 944 cf Routed to Pond 33P : INFILTRATION BASIN 2

Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 3 Peak Elev= 95.52' @ 12.10 hrs Surf.Area= 237 sf Storage= 174 cf

Plug-Flow detention time=68.2 min calculated for 944 cf (95% of inflow) Center-of-Mass det. time=38.9 min (795.6 - 756.7)

VolumeInvertAvail.StorageStorage Description
#194.30'307 cfCustom Stage Data (Prismatic)Listed below (Recalc)
Elevation (feet)Surf.Area (sq-ft)Inc.Store (cubic-feet)Cum.Store (cubic-feet)
94.306300
95.001487474
96.00319234307
DeviceRoutingInvertOutlet Devices
#1Device 394.80'2.5" Vert. Orifice C = 0.600Limited to weir flow at low heads
#2Device 395.50'48.0" x 48.0" Horiz. Grate C = 0.600
#3Primary91.80'12.0" Round Culvert\n L = 30.0' RCP, groove end projecting, Ke = 0.200\nInlet / Outlet Invert= $ 91.80' / 91.65' $ S = 0.0050' /' Cc = 0.900\n n = 0.012 Concrete pipe, finished, Flow Area= $ 0.79 $ sf
Primary OutFlow Max=0.29 cfs @ 12.10 hrs HW=95.52' TW=93.94' (Dynamic Tailwater)\n uparrow3=Culvert (Passes 0.29 cfs of 5.61 cfs potential flow)\n uparrow1=Orifice (Orifice Controls 0.13 cfs @ 3.78 fps)\n downarrow2=Grate (Weir Controls 0.16 cfs @ 0.48 fps)

Culvert