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'l'ime of Concentration (SCS Method) <br />Curve Number: 87 <br />Length of Flow (ft): 1554 <br />Average Land Slope O: 5.00 <br />Time of Concentration (hrs): 0.27 <br />Graphical Peak Discharge <br />Project: Cugnini PiY By:13en Miller llate: OS/21/03 <br />1. <br />Drainage area :....................A = 1285766.8524 Sq Ft <br />Runoff Curve Number :.............CN = 87 <br />Time of Concentration:...........Tc = 0.27 <br />Pond and swamp areas spread <br />throughout watershed ............... = 10.00 percent of A <br />128576.6852 Sq Ft <br />2. Frequency ........................yr = 100 <br />3. Rainfall,P(24-hour) ..............in = 3.20 <br />4. Initial abstraction. Ia......._... = 0.2989 <br />5. Compute Ia/P ....................... = 0.0934 <br />6. Unit peak discharge, qu......csm/in = 713.41 <br />7. Runoff,Q .........................in= 1.9149 <br />8. Pond 8i swap adjustment factor,...Fp = 1.00 <br />9. Peak Discharge,gp ...............cfs = 63.0049 <br />Vegetated Channel Design <br />Project: Cugnini Gravel pit By: Ben Miller Date: 06/30/03 <br />Channel Type: Trapezoidal, Equal Side Slopes <br />1. Channel Geometric Properties <br />llimensions : Left Side Slope ................................... = S.OU:1 <br />Right Side Slope .................................. = 5.00:1 <br />Cugnini 12/03 13 <br />