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<br />USGS GAGE 9-1635 <br /> <br />YEAR <br /> <br />1951 <br />1952 <br />1953 <br />1954 <br />1955 <br />1956 <br />1957 <br />1958 <br />1959 <br />1960 <br />1961 <br />1962 <br />1963 <br />1964 <br />1965 <br />1966 <br />1967 <br />1968 <br />1969 <br />1970 <br />1971 <br />1972 <br />1973 <br />1974 <br />1975 <br />1976 <br />1977* <br />1978 <br />19"'9 <br />1980 <br />1981 <br />1982 <br />1983 <br /> <br />. <br /> <br />. <br /> <br />Colorado River near CO-UT state line <br /> <br />INSTANTANEOUS PEAK FLOW <br /> <br />30,200 CFS <br />52,000 CFS <br />37,300 CFS <br />11,600 CFS <br />17,100 CFS <br />28,900 CFS <br />56,800 CFS <br />45,000 CFS <br />23,200 CFS <br />24,700 CFS <br />19,300 CFS <br />40,500 CFS <br />11,300 CFS <br />27,300 CFS <br />36,400 CFS <br />14,400 CFS <br />19,400 CFS <br />26,600 CFS <br />20,400 CFS <br />33,000 CFS <br />22,200 CFS <br />18,400 CFS <br />35,000 CFS <br />22,800 CFS <br />26,300 CFS <br />14,400 CFS <br />5,080 CFS <br />27,800 CFS <br />36,000 CFS <br />32,100 CFS <br />12,100 CFS <br />19,300 CFS <br />62,100 CFS <br /> <br />Pgm 25,656 CFS for 1951-1983 omitting 1977 <br /> <br />* 1977 peak omitted from calculations due to drought <br />conditions. <br />