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SEDCAD 4 for Windows <br />n,.,..m,.er iooa-vnro a~,..om .i c.nWOn <br />is <br />Left Right <br />Bottom Freeboard Freeboard Freeboard <br />Sideslope Sideslope Slope (%) <br />Width (ft) Mult. x <br />Depth (ft) %of Depth <br />Ratio Rato (VxD) <br />12.00 3.0:1 3.0:1 25.0 1.00 <br />Riprap Channel Results: <br />Simons/OSM Method -Steep Slope Design <br /> w/o Freeboard wJ Freeboard <br />Design Discharge: 12.07 cfs <br />Depth: 0.07 ft 1.07 ft <br />Top Width: 12.40 f[ 18.40 R <br />Velocity*: <br />X-Section Area: 0.82 sq R <br />Hydraulic Radius: 0.066 ft <br />Froude Number*: <br />Manning's n*: <br />Dmin: 3.00 in <br />050: 9.00 in <br />Dmax: 11.25 in <br />Velocity and Manning's n calculations may not apply for this method. <br />Structure #15 (Pond) <br />SEC. 28 SED TRAP 2 <br />Pond Inputs: <br />Initial Pool Elev: 8,219.60 R <br />Initial Pool: 0.01 ac-R <br />*6ediment Storage: 0.11 ac-ft <br />Dead Space: 20.00 W° <br />*Sediment capacity based on Average Annual R of 79.0 far 1 year(s) <br />Emeroencv Soillwa <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />8,224.50 20.00 2.00:1 2.00:1 10.00 <br />Pond Results: <br />Peak Elevation: 8,220.86 ft <br />H'graph Detention Time: 0.00 hrs <br />Pond Model: CSiRS <br /> <br />Filename: STSec28Ten24.030807.sc4 Printed 03-09-2007 <br />• <br />i <br />• <br />• <br />Exh. 7-20A-20 Revision Date: 3/12/07 <br />Revision No.: PR-02 <br />