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<br />CULVERT A-2 BASIN 5 <br />Time of Concentration (SCS Method) <br />Curve Number: 87 <br />Length of Flow (ft): 811.74 <br />Average Land Slope (): 10.4 <br />Time of Concentration (hrs): 0.11 <br />08/07/1999 <br />J <br />• <br />Graphical Peak Discharge <br />Project: AMENDMENT By: GL <br />Location: CULVERT A-2 Checked: <br />Developed <br />1. Data: <br />Drainage area :....................A = 7.4000 Acres <br />Runoff Curve Number :.............CN = 87 <br />Time of Concentration:...........Tc = 0.11 <br />08/07/1999 <br />Date: 08/07/99 <br />Date: <br />Pond and swamp areas spread throughout watershed =percent of A <br />0.3700 Acres <br />2. Frequency ........................yr = 10 <br />3. Rainfall,P(24-hour) ......... .....in = 2.00 <br />4. Initial abstraction, la....... ..... = 0.2989 <br />5. Compute la/P ................. ...... = 0.1494 <br />6. Unit peak discharge, qu. .....csm/in = 958.44 <br />7. Runoff,Q ........................ .in = 0.9056 <br />8. Pond & swap adjustment factor,...Fp = 0.80 <br />9. Peak Discharge,gp ......... ......cfs = 8.0291 <br />(REVISED 12/00) <br />Attachment 2.05.3(3) -10-107 <br />