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<br />Final Report <br /> <br />3-11 <br /> <br />September 2000 <br /> <br />Table 3.3.-USGS stream flow gages in the Green River system and their periods of record. <br /> <br />Gage <br /> <br />Period of Record <br /> <br />Green River near GreendaIe, Utah <br /> <br />October 1950 to present <br /> <br />Little Snake River near Lily, Colorado <br /> <br />June to August 1904 <br />October 1921 to present <br /> <br />Yampa River near Maybell, Colorado <br /> <br />April 1904 to October 1905 <br />June 1910 to November 1912 <br />April 1916 to present <br /> <br />Green River near Jensen, Utah <br /> <br />October 1903 to December 1904 <br />June to August 1905 <br />March to September 1906 <br />July to October 1914 <br />August to December 1915 <br />October 1946 to present <br /> <br />Duchesne River near Randlett, Utah <br /> <br />October 1942 to present <br /> <br />White River near Watson, Utah <br /> <br />April 1904 to October 1906 <br />May to November 1918 <br />April 1923 to September 1979 <br />October 1985 to present <br /> <br />Price River near Woodside, Utah <br /> <br />December 1945 to October 1992 <br /> <br />San Rafael River near Green River, Utah <br /> <br />May 1909 to September 1918 <br />September 1919 to July 1920 <br />October 1945 to present <br /> <br />Green River at Green River, Utah <br /> <br />October 1894 to October 1899 <br />October 1904 to present <br /> <br />Figure 3.4 shows annual volumes and peak flows at the USGS gage near Green River, Utah. <br />Flows in the river reflect changes in watershed conditions including the historic occurrence of wet <br />and dry cycles, dam construction, and trans-basin diversions (Allred 1997; Allred and Schmidt <br />1999). Effects of weather change can be seen in the figure by comparing the magnitude of annual <br />volumes from 1906 through 1929 with annual volumes thereafter. The average annual volume of <br />flow was 7,040 million m3 during 1906-1929, whereas during 1930-1996, the average annual <br />volume of flow decreased 29% to 4,990 million m3. Three extended periods of drought can be <br />observed in the historic record: 1931-1940, 1953-1964, and 1987-1994. During the mid-1980s, <br />there were four consecutive wet years (1983-1986). <br />