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<br />, <br />I <br />I <br />I <br />, <br />I <br />I <br />I <br />, <br />I <br />I <br />I <br />! <br />I U) <br /> IIJ <br /> :I: <br />I (.) <br />~ <br /> z <br />I :I: <br />~ <br />, 0.. <br />IIJ <br />I 0 <br />..J <br /> ..J <br />I ~ <br />Z <br /><t <br /> Q: <br />I ..J <br />~ <br />g <br />I <br />I <br />I <br />1 <br />I <br /> <br />...,. .... Ll.. <br /> <br />5 <br /> <br />5 <br /> <br />U) <br />IIJ <br />:I: <br />(.) <br />Z <br /> <br />4 <br /> <br />424HR <br /> <br />Z <br /> <br />:I: <br />I- <br />0.. <br />IIJ <br />o <br />..J <br />..J <br />~ <br />Z <br />~ <br /> <br />..J <br />~ <br />o <br />I- <br /> <br />3 <br /> <br />3 <br /> <br />6 HR <br /> <br />2 <br /> <br />2 <br /> <br />1 HR <br /> <br />o <br /> <br />(Y.a..) 1 <br /> <br />10 <br />RETURN PERIOD IN YEARS <br /> <br />3 <br /> <br />60 70 80 90 <br /> <br />o <br />100 <br /> <br />4 <br /> <br />. <br /> <br />. <br /> <br />7 0 9 <br /> <br />.. <br /> <br />20 <br /> <br />20 <br /> <br />30 <br /> <br />35 40 45 50 <br /> <br />2 <br /> <br />Slop. Br~k Lil'lll <br /> <br />3 <br /> <br /> S_ BrMk Linf, <br /> 5 <br />NOTE: 5 minute value i. <br /> 42% of 30minute <br /> value. <br /> 4 <br /> - <br /> - <br /> - ,--. <br /> ... <br /> -- n <br /> " '" 20 ... 40 !lO 00 100 120 100 110 240 300 <br /> <br />2 <br /> <br />o <br />(Mi..) 5 <br /> <br />30 <br /> <br />60 <br />1 <br /> <br />360 <br />6 <br /> <br />III -] <br /> <br />5 <br /> <br />4 100 YR <br /> <br />3 <br /> <br />toYR <br /> <br />22 YR <br /> <br />o <br /> <br />12 <br /> <br />14 16 18 20 22 24 (Houri) <br /> <br />2 <br /> <br />3 <br /> <br />4 <br /> <br />5 <br /> <br />8 <br /> <br />10 <br /> <br />DURATION IN MINUTES AND HOURS <br /> <br />RALSTON CREEK <br />East Rainfall <br />(corrected for 91 sq. mi.) <br /> <br />RAINFALL <br />DEPTH - DURATION - FREQUENCY GRAPHS <br />WRIGHT - Mc LAUGHLIN ENGINEERS <br />FIGURE HA-2 <br />