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<br /> I <br /> I. Storage provided <br /> I STORAGE <br /> PROVIDED <br /> I Elevation Area Cumulative Volume <br /> 873 2400 4035 <br /> I 874 5675 18760 <br /> 876 9050 454]0 <br /> I 878 17600 50770 := NWL storage <br /> 878~3 18450 80340 > laO-year flood <br /> I 879~5 30830 97660 <br /> 880 38475 109400 > laO-year t100d <br /> with no outflow <br /> I <br /> drainage area 5.34 acres <br /> I rainfall type fl <br /> runoff 3.29 inches <br /> I- peak inflow 13 cfs <br /> peak outflow 2.3 cis <br /> detention basin storage volume 1.57 inches or 0.7 acre feet <br /> I storm # I 2 3 4 5 6 7 <br /> frequency (years) I 2 5 10 25 50 100 <br /> I 24-hr rainfall (in.) 2~5 2.75 3.55 4.15 4.75 5.3 5~9 <br /> lalP Ratio 0.25 0.23 0~18 0.15 0.13 0~12 0.11 <br /> I runoff (in.) 0~69 0~85 1.4 1.85 7 -- 2.78 3.29 <br /> __J.J <br /> Unit peak discharge 0~72 0.73 0.77 0~79 0.8 0.81 0~82 <br /> I (cfs/acre/in) <br /> Pond and Swamp 1 I I I I I I <br /> factor <br /> I O~O% pond used <br /> Peak Discharge (cfs) 2 3 5 7 9 II 13 <br /> I <br /> I <br /> I. Responses to Comments Ogren Townhome PUD page 9 <br /> I <br />