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211) <br />Table 5. Mean concentration,-of=-susPended sediments- in- the. Green River, <br />near Jensen before and after construction,. of Flaming Gorge <br />Dam (data from U. S. Geological Survey). <br />Water year <br />(Oct. - Sept.) Mean concentration <br />(PPM) <br />Pre-impoundment <br />1949 1930 <br />1950 1950 <br />1951 1220 <br />1952- 2430 <br />1953 1130 <br />1954 984 <br />1955 1400 <br />1956 1930 <br />1957 1280 <br />1960. 1722 <br />1961 753 <br />1962 1620 <br />Mean 1529 <br />Post-impoundment <br />• 1963 756 <br />1964 828 <br />1965 1190 <br />Mean 925 <br />•