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<br />. ' <br /> <br />I <br />I <br />I <br /> <br />. <br /> <br /> <br />I <br /> <br />i <br /> <br />I <br />f <br />J ' <br />I <br /> <br />, , <br /> <br />I. <br />f <br />~. <br /> <br /> <br />j <br /> <br />r <br />l <br />'\ <br />Ii <br />P <br />I! <br />Ii <br />I;' <br />I" <br />r <br />~', <br />IL- <br />I -, <br /> <br />developed using estimates of probable maximum thunderstorm <br />precipitation based on thunderstorm records. Precipitation- <br />frequency curves were used to develop the 100-year and 500-year <br />storms and loss rates were established by hydrologists familiar <br />with the area. <br /> <br />The discharges for the 50-year and 500-year floods developed in <br />these on-going studies are less than those listed in the previous <br />FIS (5). The 100-year flow computed in the May 1988 study (9) <br />plus the base channel flow of 60 cfs will be used. A comparison <br />of the previously accepted flows and those to be used in these <br />on-going studies follows. <br /> <br />160 <br />290 <br /> <br />430 <br />360 <br /> <br />100-yr <br /> <br />670 <br />385 <br /> <br />500-yr <br /> <br />10-yr <br /> <br />50-yr <br /> <br />1982 FIS <br />On-going FIS <br /> <br />1850, <br />435 <br /> <br />-15- <br /> <br />