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",' \..,'. , ';l>" ':;''':--1 . . Annual depletion of the Colorado River 80,900 a.L Salinity increase at Imperial Dam from salt loading 1.1 mg/l 10.1 mg/l Salinity increase from depletion Benefit-cost ratio 1. 30 to 1 Annual benefits 9,947,400 Environmental Impact 1. A portion of the scenic canyon of the Dolores River will be in- undated, resulting in loss of some scenic area and aesthetic damage from the construction. 2. Stream fishery and recreational enhancement of the Dolores River will take place. 3. White river boating activity could be curtailed by impoundment of spring flows. Present operational plans provide less boating days but those days can be scheduled with project operation. Current Status Advance planning studies were initiated on the Dolores Project in FY 1971 with funds appropriated in FY 1970, but held in budgetary reserve. Total investigation costs to September 30, 1976, including feasibility and advance planning studies, and participation in the research and demonstration farm, amount to $2,096,677. The following schedule has been discussed by the Dolores Water Con- servancy District as one that could be achieved and lead to a construction start for the Dolores Project in 1977. Definite Plan Report Environmental Impact Statement (Draft) Public Hearing (Draft EIS) Final EIS Execution of Repayment Contract Construction Start April 1977 November 1;.1976 December 4, 1976 March 1977 April 1977 Spring 1977 If this schedule is followed the Dolores Project construction could be initiated by the obligation of funds to construct an access road to . the site of the Great Cut Dike. Negotiations concerning these two items are currently underway. 4 .-.