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<br />I <br /> <br />n-'-3'7 <br />!J .I; I ' <br /> <br />I <br /> <br />WATER AND RELATED LAND RESOURCES <br /> <br />I <br /> <br />WHITE RIVER BASIN IN COLORADO <br /> <br />SUMMARY <br /> <br />I <br /> <br />This report presents information on the water and related land <br />resources of the White River Basin in Colorado. It is based on <br />a cooperative study by the Colorado Water Conservation Board and <br />rhe U. S. Department of Agriculture. Participation by the Depart- <br />ment of Agriculture was authorized under provisions of Section 6 <br />of Public Law 566, 83rd Congress, as amended and supplemented. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />The Basin encompasses 3,808 square mi1es--about 4 percent of the <br />State of Colorado. Elevations range from 5,000 to 12,000 feet <br />above sea level. Average annual precipitation varies from less <br />than 9 inches to more than 30 inches. Average annual frost-free <br />period for cropland varies from less than 50 days to about 124 <br />days. <br /> <br />I <br /> <br />I <br /> <br />Seventy-seven percent of the land is in Federal ownership, 21 per- <br />cent is privately owned, and 2 percent is owned by State and local <br />governments. Less than 3 percent of the land is used for crop <br />production. The remaining 97 percent is used for grazing, timber <br />production, wilderness, watershed, recreation, and other purposes <br />(Land Resource Frontispiece). Extensive oil-shale deposits consti- <br />tute an undeveloped natural resource of great economic potential. <br /> <br />I <br /> <br />I <br /> <br />The Basin is sparsely populated. The 1960 population was 5,560. <br />Population increased more than 80 percent between 1940 and 1960, <br />primarily as a result of oil and gas development. Projected <br />population based on development of coal for power and the shale- <br />oil industry is 20,000 by 1980, 186,000 by the year 2000, and <br />204,000 by 2020. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />The average irrigated acreage during the 1943-60 period was 35,200 <br />acres. Dry cropland occupied 34,100 acres. An estimated 23,600 <br />acres has a potential for being developed for irrigation, part from <br />present dry cropland acreage, Projection of irrigated and dry crop- <br />land acreages are 52,150 and 27,000 respectively for 1980, 50,150 <br />and 25,000 for the year 2000, and 47,600 and 24,000 for 2020, <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />- i - <br />