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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />., <br />J <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />o <br />-~ <br />~ <br />~ <br /> <br />-20- <br /> <br />10. The scope of the Lower Gunnison project should be <br />expanded by the Water and Power Resources Service to <br />include all of the irrigated lands in the area, and not <br />be restricted to only the Uncompahgre Project lands. <br />The canal and lateral lining program which has been <br />proposed by the WPRS is not cost-effective and should <br />be re-evaluated. The possibilities for gravity-powered <br />sprinkler systems and closed conduit canal and lateral <br />linings in the North Fork of the Gunnison River should <br />be examined. <br />11. There is a definite need to obtain a better data base <br />for several of the areas, especially McElmo Creek in <br />southwestern Colorado. The groundwater base flows in <br />the Lower Gunnison, McElmo Creek and the Uintah Basin <br />require further effort. Seepage rate data for canals <br />and laterals in almost all of the areas are lacking and <br />need to be collected in order to define the most cost- <br />effective incremental canal and lateral lining programs <br />for each area. <br />12. It is recommended that studies be initiated in the <br />Price-San Rafael, Uintah, McElmo and Lower Gunnison <br />areas to determine the relative magnitude of the <br />natural salt contribution for the irrigated areas. <br />This information would be necessary to delineate the <br />more exact cost-effectiveness functions for a detailed <br />construction program. <br />