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7. Runoff ,Q .........................in = 0.4844 <br />8. Pond & swap adjustment factor .... Fp = 0.75 <br />9. Peak Discharge,gp ...............cfs = 4.2787 <br />CULVERT 110 <br />Time of Concentration (SCS Method) <br />Curve Number: 79 <br />Length of Flow (ft): 1172.10 <br />Average Land Slope (percent): 8.06 <br />Time of Concentration (hrs): 0.22 <br />CULVERT 110 <br />Graphical Peak Discharge <br />Project: NUCLA MINE <br />By: GL Date: 02/19/06 <br />Location: CULVERT 110 <br />Checked: Date: <br />Present <br />= 0.2658 <br />1. Data: <br />...... csm /in = 689.59 <br />Drainage area: .................... <br />A = 14.7000 Acres <br />Runoff Curve Number: ............. CN = 79 <br />Time of Concentration: ........... <br />Tc = 0.22 <br />Storm Type: ....................... <br />= II <br />Pond and swamp areas spread <br />throughout watershed ............... <br />= 3.00 percent of A <br />0.4410 Acres <br />2. Frequency ........................ yr = 10 <br />3. Rainfall ,P(24 - hour) .............. in = 2.00 <br />4. Initial abstraction, la............ <br />= 0.5316 <br />5. Compute la /P ....................... <br />= 0.2658 <br />6. Unit peak discharge, qu <br />...... csm /in = 689.59 <br />7. Runoff ,Q .........................in <br />= 0.5225 <br />8. Pond & swap adjustment factor .... Fp = 0.75 <br />9. Peak Discharge,gp ...............cfs = 6.2067 <br />Revised June 2011 JR -60) Attachment 2.05.3(3) -1 -76 <br />