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• CULVERT A-6 BASIN 11 <br />Time of Concentration (SCS Method) 08/07/1999 <br />Curve Number: 88 <br />Length of Flow (ft): 600.92 <br />Average Land Slope (): 9.2 <br />Time of Concentration (hrs): 0.09 <br />08/07/1999 <br />Graphical Peak Discharge <br />Project: AMENDMENT By: GL Date: 08/07/99 <br />Location: CULVERT A-6 Checked: Date: <br />Developed <br />1. Data: <br />Drainage area :....................A = 4.7000 Acres <br />Runoff Curve Number :.............CN = 88 <br />Time of Concentration:...........Tc = 0.09 <br />Pond and swamp areas spread throughout watershed. = 5.00 percent of A <br /> 0.2350 Acres . <br />2. Frequency ...................... ..yr = 10 <br />3. Rainfall,P(24-hour) ........ ......in = 2.00 <br />4. Initial abstraction, la....... ..... = 0.2727 <br />5. Compute la/P ................. ...... = 0.1364 <br />6. Unit peak discharge, qu. .....csm/in = 990.91 <br />7. Runoff,Q ........................ .in = 0.9652 <br />8. Pond & swap adjustment factor,...Fp = 0.75 <br />9. Peak Discharge,gp ........ .......cfs = 5.2680 <br /> <br />(Revised 12100) Attachment 2.05.33) -10-90 <br />