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• DIVERSION DITCH D-1 BASIN 18 <br />Time of Concentration (SCS Method) 08/07/1999 <br />Curve Number: 79 <br />Length of Flow (ft): 1380 <br />Average Land Slope Q: 1.9 <br />Time of Concentration (hrs}: 0.51 <br />08/07/1999 <br />• <br /> <br />Graphical Peak Discharge <br />Project: AMENDMENT <br />Location: DIVERSION D-1 <br />Developed <br />By: GL <br />Checked <br />Date: 08/07/99 <br />Date: <br />1. Data: <br />Drainage area <br />.A = 10.3000 Acres <br />Runoff Curve Number :.............CN = 79 <br />Time of Concentration:...........Tc = 0.51 <br />Pond and swamp areas spread throughout watershed = 5.00 percent of A <br /> 0.5150 Acres <br />2. Frequency .................. ......yr = 10 <br />3. Rainfall,P(24-hour) .... ..........in = 2.00 <br />4. Initial abstraction, la... ......... = 0.5316 <br />5. Compute la/P ............. .......... = 0.2658 <br />6. Unit peak discharge, qu......csm/in = 455.12 <br />7. Runoff,O .................... .....in = 0.5225 <br />8. Pond & swap adjustment factor,...Fp = 0.72 <br />9. Peak Discharge,gp .... ...........cfs = 2.7554 <br />(Revised 72/00) Attachment 2.05.3(3) -10-84 <br />