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SEDCAD 4 for Windows <br />Copyrigh11996 Pamela J. Schwab <br />Civil Software Design <br /> <br />Structure #1 (Pond, <br />Structure Detai/: <br />Pond Inputs: <br />Permanent Pool Elev: 5,650.01 <br />Permanent Pool: 0.00 ac-k <br />'Sediment Storage: 0.00 ac-ft <br />Dead Space: 20.00 <br />*No sediment capacity defined <br />Perforated Riser <br />Riser ~ Barrel <br />Riser <br />el <br />Barre <br />eight i <br />Ba <br />Slope Number of <br />' <br />k <br />ft <br />efi <br />°~ <br />Diameter Le <br />Diameter <br />9 () ( ) <br />( ) Manning <br />s n Spillway Elev Holes per <br />(in) <br />(in) Elev <br />1.00 3.001 1.00 20.00 1.001 0.0150 5,652.75 1 <br />Pond Results: <br />• <br /> Peak Elevadon: 5,651.57 <br /> H'graph Detention Time: 17.12 hrs <br /> Dewater Time: <br />_ ~ ~-~- ~ ~- ~_ 0.00 days <br /> Trap Efficiency: 99.97 % <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation-Capacity-Discharge Table <br />• <br /> Area Capacity Discharge Dewater <br />Elevation Time <br /> (ac) (ac'k) (ds) (hrs) <br />5,650.00 0.140 0.000 0.000 Top of Sed. Storage <br />5,650.01 0.142 0.001 0.000 Low hole SPW !tl <br />5,650.50 0.143 0.071 0.000 <br />5,651.00 0.144 0.143 0.000 <br />5,651.50 0.145 0.215 0.000 <br />5,651.57 0.145 0.225 0.000 0.00 Peak Stage <br />5,652.00 0.146 0288 0.000 <br />5,652.50 0.147 0.361 0.000 <br />5,652.75 0.147 0.398 0.000 Spiliway #1 <br />5,653.00 0.148 0.435 0.013 <br />5,653.25 0.149 0.472 0.017 <br />5,653.50 0.150 0.509 0.017 <br />-<aEViseD-~1-zb~2-- Attdchment~0~3(_3~ -10-119-G <br />Filename: small area exemption#4.s~A Printed 04-02-2002 <br />