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<br />SEDCAD 4 for Windows <br />c~,.,,.mtie +ooa _onno o~mei~.i e~e~.,~n <br /> w/o Freeboard w/ Freeboard <br />Design Dixharge: 50.33 crs <br />Depth: 0.45 ft 1.45 R <br />Top Width: 13.61 ft 17.61 R <br />Velocity*: <br />X-Section Area: 5.86 sq R <br />Hydraulic Radius: 0.417 ft <br />Froude Number*: <br />Manning's n*: <br />Dmin: 2.00 in <br />D60: 6.00 in <br />Dmax: 7.50 in <br />Velocity and Manning's n calculations may not apply for this method. <br />Structure #31 (Nul/) <br />SEC. 21 NULL 8 <br />Structure #31 (Pond) <br />SEC. 21 POND <br />r~ <br />L <br />Pond Inputs: <br />39 <br />Initial Pool Efev: 6,978.00 R <br />Initial Pool: 4.50 ac-ft <br />*Sediment Storage: 0.94 ac-ft <br />Dead Space: 20.00 <br />*sediment capacity based on Average Annua/ R of 10.0 for 1 year(s) <br />Pertorated Riser <br />Riser <br />Riser Height Barrel <br />Bartel <br />Barrel Slope <br />Spillway Elev <br />' Number of <br />Diameter (R) Diameter Length (ft) (yo) Manning <br />s n (R) Holes per <br />(in) (in) Elev <br />18.00 18.00 18.00 170.00 2.00 0.0150 6,982.D0 2 <br />Emeraencv Soillwa <br />Spillway Elev Gest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />6,988.00 30.00 2.00:1 2.00:1 30.00 <br />Pond Results: <br />Peak Elevation: 6,982.07 R <br />• <br />Filename: STSec21Ten24.030807.sc4 <br />Exh.7-20B-43 <br />Printed 03-09-2007 <br />Revision Date: 3/12/07 <br />Revision No.: PR-02 <br />