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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 />3700 <br /> <br />Uintah Basin Unit (SCS) - Utah <br /> <br />The Uintah Basin Unit lies in the northwestern part of Utah <br />and includes all of the Duchesne River, Ashley Creek, and Brush <br />Creek drainages. ;The SCS was given the responsibility of <br />studying the effects of on-farm improvements on irrigation <br />efficiencies and the resultant salinity in the Colorado River <br />while the Bureau of Reclamation is responsible for studying <br />off-farm conveyance systems. The SCS released a revised version <br />of their Uintah Basin Salinity Report in November, 1980. <br /> <br />The selected plan developed two types of improved surface <br />irrigation systems and three types of sprinkler systems. <br />Improved surface systems are to be implemented on 42,800 acres <br />and involve such things as land leveling, ditch lining, and <br />pipeline installation. Sideroll, pivot, and gated pipe sprinkler <br />systems are to be installed over 79,400 acres. The selected plan <br />will result in a salt reduction of 76,600 tons in the Colorado <br />River and reduce the salt concentration by 10.3 mg/L at Imperial <br />Dam. The cost-effectiveness of this proposal was determined to <br />be $665,000 mg/L/year. <br /> <br />The 10-year implementation program is now in its third <br />year. Since the program began, 436,000 feet of on-farm laterals <br />have been laid in pipeline and 132,000 feet of sprinkler systems <br />have been installed. Approximately 150 measuring devices have <br />also been installed. These figures include both long term <br />agreements and one year projects. <br /> <br />DRS/gl <br />12/8/81 <br /> <br />-33- <br />