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CULVERT A-11 BASIN 20 <br />Time of Concentration (SCS Method) 08/07/1999 <br />Curve Number: 79 <br />Length of Flow (ft): 782.75 <br />Average Land Slope (): 2.9 <br />Time of Concentration (hrs): 0.26 <br />08/07/1999 <br />• <br /> <br />Graphical Peak Discharge <br />Project: AMENDMENT <br />Location: CULVERT A-11 <br />By: GL Date: 08/07/99 <br />Checked: Date: <br />Developed <br />1. Data: <br />Drainage area :....................A = 10.4700 Acres <br />Runoff Curve Number :.............CN = 79 <br />Time of Concentration:...........Tc = 0.26 <br />Pond and swamp areas spread throughout watershed. = 5.00 percent of A <br />0.5235 Acres <br />5. Compute la/P ....................... = 0.2658 <br />6. Unit peak discharge, qu......csm/in = 641.39 <br />7. Runoff,Q .........................in = 0.5225 <br />8. Pond & swap adjustment factor,...Fp = 0.75 <br />9. Peak Discharge,gp ...............cfs = 4.1117 <br />2. Frequency ........................yr = 10 <br />3. Rainfall,P(24-hour) ..............in = 2.00 <br />4. Initial abstraction, la............ = 0.5316 <br />(Revised 12/00) <br />Attachment 2.05.3(3) -10-95 <br />