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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />3746 <br /> <br />yield) to irrigated agriculture. There is no readily apparent <br />explanation for these conflicting accounts. <br /> <br />Also, the USGS report makes no mention of discharge from <br />abandoned oil test wells in the White River Basin. They do refer <br />to an annual contribution of 11,000-tons by abandoned wells from <br />the entire Green River Basin. The EPA determined contributions <br />from this source to be 65,000 tons annually in the White River <br />Basin alone. This number is closely on line with those presented <br />in BuRec's Progress Report No. 10. <br /> <br />COLORADO RIVER TO CAMEO <br /> <br />The Colorado River mainstem from the upper most headwaters <br />to the USGS gaging station near Cameo (station number 0905500) <br />encompasses approximately 8,060 square miles. It is located in <br />west-central Colorado. The Basin is bordered by the Continental <br />Divide and Flat Tops Area on the north and the Continental Divide <br />and Gunnison River Basin divide on the south with the east and <br />northeast border abutting the Platte River Basin. Elevations <br />range from 4,900 to 14,000 feet above sea level. <br /> <br />The major use of water within the Basin is for the <br />irrigation of approximately 160,000 acres of agricultural land. <br />Grazing and timber production constitute the most frequent use of <br />land in the basin. The 1980 population was approximately 60,000. <br /> <br />USGS-Professional Paper 441 <br /> <br />The average annual salt load in the Colorado River mainstem <br />near Cameo, Colorado was 1,578,000 tons for water years 1914-57. <br />The USGS identified a series of thermal springs in this basin <br /> <br />-14- <br />