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0591335 Xcel Brainerd Facility MSE 24hr 3 900-Year Rainfa/1=6.25"
<br /> Prepared by Rehder&Associates, Inc. P�inted 12/21/2020
<br /> HydroCAD�10.00-21 sln 02629 O 2018 HvdroCAD Software Solutions LLC Paqe 17
<br /> Device Routinq Invert Outlet Devices
<br /> #1 Primary 1,269.00' 12.0" Round Culvert
<br /> L=29.0' RCP, square edge headwall, Ke=0.500
<br /> Inlet/Outlet Invert= 1,269.00'/1,268.71' S= 0.0100'/' Cc= 0.900
<br /> n=0.012, Flow Area= 0.79 sf
<br /> #2 Device 1 1,271.00' 48.0" Horiz.Orifice/Grate C=0.600
<br /> Limited to weir flow at low heads
<br /> #3 Discarded 1,268.00' 0.800 in/hr Exfiltration over Surface area
<br /> �scarded OutFlow Max=0.12 cfs @ 12.36 hrs HW=1,271.91' (Free Discharge)
<br /> 3=Fxfiltration (Exfiltration Controls 0.12 cfs)
<br /> Primary OutFlow Max=5.87 cfs @ 12.36 hrs HW=1,271.91' TW=0.00' (Dynamic Tailwater)
<br /> L�Culvert (Inlet Controls 5.87 cfs @ 7.48 fps)
<br /> 2=0rifice/Grate (Passes 5.87 cfs of 35.85 cfs potential flow)
<br /> Summary for Pond 6P: Infiltration Basin 2
<br /> Inflow Area= 3.000 ac, 63.00% Impervious, Inflow Depth = 3.42" for 100-Year event
<br /> Inflow = 8.84 cfs @ 12.17 hrs, Volume= 0.855 af
<br /> Outflow = 3.22 cfs @ 12.94 hrs, Volume= 0.772 af, Atten=64%, Lag=46.3 min
<br /> Discarded = 0.12 cfs @ 12.81 hrs, Volume= 0.249 af
<br /> Primary = 3.10 cfs @ 12.94 hrs, Volume= 0.523 af
<br /> Routing by Dyn-Stor-Ind method,Time Span=0.00-48.00 hrs, dt=0.05 hrs
<br /> Peak Elev= 1,272.20' @ 12.81 hrs Surt.Area=6,345 sf Storage= 16,161 cf
<br /> Plug-Flow detention time= 335.6 min calculated for 0.771 af(90%of inflow)
<br /> Center-of-Mass det.time= 301.6 min ( 1,113.0-811.4 )
<br /> Volume Invert Avail.Storacae Storaqe Description
<br /> #1 1,268.00' 29,907 cf Custom Stage Data(Irregular)Listed below (Recalc)
<br /> Elevation Surt.Area Perim. Inc.Store Cum.Store Wet.Area
<br /> (feefl (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq ft)
<br /> 1,268.00 1,900 250.0 0 0 1,900
<br /> 1,269.00 2,690 285.0 2,284 2,284 3,414
<br /> 1,270.00 3,590 315.0 3,129 5,413 4,877
<br /> 1,271.00 4,685 450.0 4,125 9,538 13,105
<br /> 1,272.00 6,065 470.0 5,360 14,898 14,639
<br /> 1,273.00 7,500 490.0 6,770 21,668 16,241
<br /> 1,274.00 9,000 510.0 8,239 29,907 17,909
<br /> Device Routing Invert Outlet Devices
<br /> #1 Pnmary 1,271.00' 15.0" Round Culvert
<br /> L= 153.0' CPP, square edge headwall, Ke=0.500
<br /> Inlet/Outlet Invert= 1,271.00'/1,270.00' S=0.0065'P Cc=0.900
<br /> n=0.012, Flow Area= 1.23 sf
<br /> #2 Discarded 1,268.00' 0.800 in/hr Ex�ltration over Surface area
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