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0591335 Xcel Brainerd Facility MSE 24hr 3 10-Year Rainfal/=3.86"
<br /> Prepared by Rehder&Associates, Inc. Printed 12/21/2020
<br /> HydroCAD�10.00-21 s/n 02629 O 2018 HydroCAD Software Solutions LLC Page 10
<br /> Tc Length Slope Velocity Capacity Description
<br /> (min) (feet) (ft/ft) (ft/sec) (cfsl
<br /> 7•0 Direct Entry�
<br /> Summary for Subcatchment 4S: PROPOSED TO BASIN 3
<br /> Runoff = 7.44 cfs @ 12.18 hrs, Volume= 0.410 af, Depth= 2.25"
<br /> Runoff by SCS TR-20 method, UH=SCS, Weighted-CN,Time Span=0.00-48.00 hrs, dt=0.05 hrs
<br /> MSE 24-hr 3 10-Year Rainfall=3.86"
<br /> Area(ac) CN Descriution
<br /> " 1.370 98 IMPERVIOUS
<br /> 0.820 61 >75%Grass cover Good, HSG B
<br /> 2.190 84 Weighted Average
<br /> 0.820 37.44% Pervious Area
<br /> 1.370 62.56% Impervious Area
<br /> Tc Length Slope Velocity Capacity Description
<br /> _(min) (feet) (ft/it) (ft/sec) (cfs
<br /> 10.0 Direct Entry,
<br /> Summary for Pond 5P: Infiltration Basin 1
<br /> Inflow Area= 5.120 ac, 65.82% Impervious, Inflow Depth = 1.12" for 10-Year event
<br /> Inflow = 7.97 cfs @ 12.17 hrs, Volume= 0.477 af
<br /> Outflow = 1.45 cfs @ 12.59 hrs, Volume= 0.393 af, Atten=82%, Lag=24.8 min
<br /> Discarded = 0.09 cfs @ 12.59 hrs, Volume= 0.250 af
<br /> Primary = 1.36 cfs @ 12.59 hrs, Volume= 0.143 af
<br /> Routing by Dyn-Stor-Ind method,Time Span= 0.00-48.00 hrs, dt=0.05 hrs
<br /> Peak Elev= 1,271.10' @ 12.59 hrs Surf.Area= 5,050 sf Storage= 11,166 cf
<br /> Plug-Flow detention time= 628.7 min calculated for 0.393 af(82% of inflow)
<br /> Center-of-Mass det.time= 569.4 min ( 1�378.5-809.2 )
<br /> Volume Invert Avail.Stora e Storac�e Description
<br /> #1 1,268.00' 34,233 cf Custom Stage Data(Irregular)Listed below(Recalc)
<br /> Elevation Surt.Area Perim. Inc.Store Cum.Store Wet.Area
<br /> (feet) (sq-ft) (feet) (cubic feet) (cubic-feet) (sq-ft)
<br /> 1,268.00 2,350 235.0 0 0 2,350
<br /> 1,269.00 3,100 270.0 2,716 2,716 3,779
<br /> 1,270.00 3,955 305.0 3,519 6,235 5,406
<br /> 1,271.00 4,900 330.0 4,419 10,654 6,709
<br /> 1,272.00 6,455 465.0 5,660 16,314 15,259
<br /> 1,273.00 8,420 565.0 7,416 23,730 23,471
<br /> 1,274.00 12,735 635.0 10,503 34,233 30,183
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