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y Jun 09 99 10: 13a D Chesney 668598 p. 6 <br /> y <br /> Table 3. Storage requirements due to 25-year, 24-hour storm runoff from roofed, paved, <br /> and unpaved surfaces. <br /> 25-year Rooted areas and Concrete or steep Unpaved lots' <br /> 24-hour holding pond surface' lots f> 2%slope) <br /> rainfall <br /> (inches) RUnOf1 Volumem= Runoff Volurne/w Runoff Volume/acre <br /> iec3:es► (cubic feet) (lnchesy eublc feed (inches) {culala feet <br /> 1.0E <br /> 0.0833 0.71} 0.0588 0.32 1160 <br /> 1.50.1250 1.18 0.0986 0.68 2475 <br /> 7.0 2.0 0.1667 1.67 0.1393 1.09 3961 <br /> 2.5 2.5 0.2083 2.16, 0.1803 1.53 5544 <br /> 3.o 3.0 0.2500 2.66 0.2215 1.98 7185 <br /> 3.5 3.5 0.2917 3.15 0.2629 2.45 8864 <br /> 4.0 4.0 0.3333 3.65 0.3043 2.92 10,570 <br /> 4.5 4.5 0.3750 4.15 0.3458 3.40 12,296 <br /> I <br /> 5.0 5.0 0.4167 4.65: 0.3873 3.88 14.0 <br /> 36 � <br /> I <br /> 5.5 5.5 0.4583 5.15 0.4288 4.36 15,787 <br /> I <br /> 6.0 6.0 0.5000 5.64 0.4703 4.85 17,547 <br /> 6.5 B.5 0.5417 6.14 0.51195.33 19,314 <br /> 7.0 7.0 0.5833 6.64 0.5535 5.82 21,086 <br /> 7.5 7.5 0.6250 7.14 ` 0.5951 6.31 22,862 <br /> I <br /> 8.0 8.0 0.6667 7.64 , 0.6367 6.81 24,643 <br /> 8.5 8.5 0.7083 8.14 0.6783 7.30 26,427 <br /> 9.0 9.0 0.7500 8.63 0.7199 7.79 28,213 <br /> 8.5 9-5 ±0:83 <br /> .7917 9.14 0.7616 8.29 30,002 <br /> 10.0 10.033 9.641 0.8032 8.78 31,793 <br /> ' NRCS runoff curve number(CN) value of 100 was used to calculate runoff. <br /> = NRCS runoff curve number (CN) value of 97 was used to calculate runoff. <br /> ' NRCS runoff curve number(CN) value of 90 was used to Calculate runoff. <br /> i <br /> Series Number Dafe p <br /> UCCE-OMMS.2 tplg/ 11 <br />