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File: J:\OOJOBS\003-2166\SGOIMD2X 7/22/00, 7:54 :1OPM <br />Total Contributing Drainage Area: 6.1 acres <br />MATERIAL: GRADED SILTS TO COBBLES COLLOIDAL <br />Trapezoidal Earthen Channel <br />Limiting Variable: Velocity = 5.500 fps <br />Sediment-laden Water <br />Design Bottom ~ Manning's <br />Discharge Width ZLeft ZRight Slope n <br />(cfs) (ft) (~) <br />----------~----~----°------- x- z- ~-- <br />6 27 10.0 2.5:1 2.5:1 10.0 0.030 <br />Top Hydraulic Froude <br />Depth Velocity Width Radius Number <br />(ft) (fps) (ft) <br />0 14 4.20 10.7 0.138 1.99 <br />w/ Freeboard: 0.14 SD.7 <br />Runoff Peak Peak Sediment Peak Settleable <br />Volume Discharge Sediment Concentration Concentration 24VW 24AA <br />(ac-ft) (cfs) (tons) (mg/1) (ml/1) (ml/1) (ml/11 <br />IN/OUT 0.50 6.27 25.4 59854 22.97 11.42 4.10 <br />J1, B1, 53 <br />DSG1, 37C <br />Drainage Area from J1, B1, S3, SWS (s)1: 2.4 acres <br />Total Contributing Drainage Area: 8.6 acres <br />MATERIAL: GRADED SILTS TO COBBLES COLLOIDAL <br />Trapezoidal Earthen Channel <br />Limiting Variable: Velocity = 5.500 fps <br />Sediment-laden. water <br />Design Bottom Manning's <br />Discharge Width ZLeft ZRight Slope n <br />(cfs) (ft) (°s) <br />8.48 14.0 2 5 1 2.5:1 9.0 0 030 <br />Depth <br />(ft) <br />0.15 <br />w/ Freeboard: 0.15 <br />r1 <br />LJ <br />Top Hydraulic Froude <br />Velocity Width Radius Number <br />(fps) (ft) <br />4.05 14.7 0.142 1.89 <br />14.7 <br />Page: 9 <br />