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<br />~- <br /> Mar 14, 1939 9,330 <br /> May 5, 1942 16,200 <br /> Jun 28, 1947 13,000 <br /> Jun 19, 1949 16,800 <br /> May 21, 1957 8,160 <br /> May 21, 1958 7,519 <br /> Jun 10, 1961 7,120 <br /> Jun 20, 1965 37,600 <br /> Aug 16, 1968 12,200 <br /> May 13, 1969 10,600 <br /> Jun 18, 1970 9,960 <br /> May 11, 1973 22,000 <br /> May 21, 1980 13,200 <br /> Jun 18, 1983 14,480 <br /> May 21, 1984 8,000 <br />STREAM HYDROLOGY AND HYDRAULICS <br /> <br />Good streamflow records have been maintained on the South <br />Platte River at the Julesburg and Balzac gage stations. In <br />addition, the Colorado Water Conservation Board and the Corps of <br />Engineers have maintained a repository of past flood history <br />information and data. <br /> <br />The following table presents the flood hydrology which has <br />been adopted by federal and state agencies responsible for the <br />administration of floodplain management programs and <br />responsibilities, <br /> <br />Table 1 <br />PEAK FLOOD FREQUENCY VALVES <br /> <br />South Platte River, Crook, Colorado Reach <br /> <br />Flood Event <br /> <br />Discharge <br />(C,F.S. ) <br />9,200 <br />15,500 <br />29,000 <br />44,000 <br />68,000 <br />104,000 <br />168,000 <br /> <br />. <br /> <br />5 - year <br />10 - year <br />25 - year <br />50 - year <br />100 - year <br />200 - year <br />500 - year <br /> <br />-4- <br />