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<br /> <br />"~~ "' <br /> <br />"a, <br />:~i: <br /> <br />INIIRIORIUHI III <br /> <br /> INTERIOR ROLE In Stage Two, the construction of <br /> the west end Goverruneht Highllne " <br /> Canal was completed with an <br /> Federal coordination is accom- additional 5,600 tons of salt <br /> plished using the lead agency precluded from entering the river <br /> concept, Reclamation, acting as lead system annually, <br /> agency for the Secretary of the <br /> Interior, has the responsibility to Reclamation cooperates with <br /> implement salinity control USDA in their efforts in the Grand <br />M measures. Interagency coordination Valley, USDA's program involves <br />CJ1 between Interior and USDA is installation of underground pIp.... <br />iooJ formalized through a series of joint lines and ditch lining, land leveling, <br />'llgreements executed at the and improvement of surface irri- <br />c.o Departmentallevel, Coordination gation systems and other onfarm <br /> at the field administrative/technical practices, Specific USDA accom- <br /> level is accomplished through the plishments are discussed later In <br /> Colorado River Interagency Salinity this document. <br /> Control Committee, <br /> Monitoring thus far has shown a <br /> reduction in salt load of over <br /> Bureau of Reclamation 63,000 tons annually as a result of <br /> combined USDA and Reclamation <br /> Units authorized 'for construction efforts in the Grand V all~y area, ,; <br /> are the Grand Valley, Paradox <br /> Valley, Las Vegas Wash, Lower Concern has been expressed over <br /> Gunnison Basin, and the McElmo the Impacts to wetland and riparian .:' <br /> Creek Unit as a part of the Dolores habitats associated with construc- <br /> Project, The frontispiece map shows tion and implementation.of the <br /> all units under current or past salinity control features, Progress Is <br /> investigation. being made on these two concerns, <br /> Reclamation purchased over, <br /> Reclamation's construction of the 500 acres of river bottom lands and <br /> Grand Valley Unit Stage One is sought transfer.of over 500 acres of <br /> complete, A field station, 7 miles of adjacent BLM lands to d.eVelop a " <br /> the Highline Canal lining, and the wildlife management area in Grand " <br /> associated pipe lateral construction Valley, <br /> were finished for the 1983 Irrigation Under the USDA prog!'am, <br /> season. A moss and debris removal <br /> structure was built to control the farmers have also volunteered to <br /> trash problems in the lined canal. implement approximately:600 acres <br /> of wildlife practices in the Grand <br /> Results from Stage One onslte Valley area. <br /> monitoring were evaluated, and the <br /> lining program is reducing salt Before initiation of salinity <br /> loading by 21,900 tons per year, control activities, the entire Grand <br /> 'i <br />