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<br />. <br /> <br />. <br /> <br />proiect Costs (Estimated), Cont'd. <br /> <br />Water allocation <br /> <br />Total <br /> <br />6,000 a.f. <br />120,000 a.f. <br />126,000 a.f. <br />87,000 a.f. <br />6 to 11 ppm <br />1.67 to 1 <br />1.04 to 1 <br /> <br />Municipal and industrial <br /> <br />Irrigation <br /> <br />Annual depletion of the Colorado River <br /> <br />Annual salinity contributed to Colorado River <br /> <br />Benefit-cost ratio (3 1/4%) <br /> <br />Benefit-cost ratio (5 1/2%) <br /> <br />Environmental Impact <br /> <br />1. The very scenic canyon of the Dolores River will be inun- <br />dated, resulting in loss of scenic area and aesthetic damage from the <br />construction. <br /> <br />2. Stream fishery and recreational enhancement of the Dolores <br />River will take place if minimum stream flows are established. <br /> <br />3. White river boating activity could be curtailed by impound- <br />ment of spring flows. Present operational plans provide nearly the same <br />number of boating days with controlled spills with the project as without <br />the project. <br /> <br />4. Salinity would be increased in the Colorado River at Lake <br />Mead from 6 to 11 ppm by the project. The increase would depend on the <br />tons per acre of salt pickup from newly irrigated lands and from water <br />depletions. <br /> <br />Indian Interests <br /> <br />Up to this time, no water has ever been adjudicated or allocated <br />to Ute Mountain Ute Indian reservation. Under the terms of a treaty of <br />1868, the entire Dolores River basin and other lands in western Colorado <br />were granted to the Ute Indian nation by the terms of which ". . . the <br />United States now solemnly agree that no persons, except those herein <br /> <br />-3- <br />