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. . . (--:. -, ",:J C') In ,0::1'1 (=~ . UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY ~::) Water Resaurces Divisian Navember 6, 1972 REPORT TO THE GRAND VALLEY SALINITY COORDINATING COMMITTEE , I The U. S. Gealagical Survey, Water Resaurces Div:lsian, is presently operating 4 streamflaw statians within the baundaries .of the Grand Valley praject area. Of these, 3 measure inflaw 1:.0 the area (Ca1arada River near Camea, Plateau Creek near Camea, Gunnisen River near Grand Junctian) , and 1 (Calorada River near Calarada- Utah State line) measures the autflaw. Water-quality infarmatian is .obtained at all 4 .of the statians. Since March 1972, cantinuaus recards .of water temperature and specific canductance have been .obtained at a site an the Calarada River at Westwater, Utah, abaut 10 miles dawnstream fram the State-line streamflow statian. Chemical-quality recards far the Calarada River near Cameo and Gunn1sen River near Grand Junctian date back ta the early 1930's. Only periadic data a~e available far the Plateau Creek near Camea statian priar ta 1972, and because .of :lna'ccessibility, the same is true far the State-line statian an the Calarada . River. Daioy abservatians of water temperature and specific canductance are naw being .obtained at all 3 infla\7 statians. Available records .of chemical analyses are published in Part 2, Water Resources Data far Calarada. Streamflow recards are in Part 1. . . " , .