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<br />CULVERT A-4 BASIN 7 <br />Time of Concentration (SCS Method) <br />Curve Number: 87 <br />Length of Flow (ft): 607.40 <br />Average Land Slope (): 13 <br />Timenf Concentration (hrs): 0.08 <br />08/07/1999 <br />~~ <br />U <br /> <br />Graphical Peak Discharge <br />Project: AMENDMENT By: GL <br />Location: CULVERT A-4 Checked: <br />Developed <br />1. Data: <br />Drainage area :....................A = 9.0000 Acres <br />Runoff Curve Number :.............CN = 87 <br />Time of Concentration:...........Tc = 0.08 <br />08/07/1999 <br />Date: 08/07/99 <br />Date: <br />Pond and swamp areas spread throughout watershed. = 5.00 percent of A <br /> 0.4500 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 = 987.64 <br />7. Runoff,Q ....................... ..in = 0.9056 <br />8. Pond & swap adjustme nt factor,...Fp = 0.75 <br />9. Peak Discharge,gp ....... ........cfs = 9.4337 <br />(REVISED 12/00) <br />Attachment 2.05.3(3) -10-109 <br />