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Colorado River Basin Salinity <br />Control Program <br />0 <br />August, 1994 <br />Setting and scope The Colorado River basin covers about 244,000 square miles in seven states <br />including west-central Colorado, eastern Utah, northwest-southwest Arizona, <br />southwest Wyoming, southeast Nevada and California, and western New <br />Mexico. Rock formations in the Upper Colorado River Basin, primary marine <br />shales provide a natural and almost infinite supply of salt that can be leached <br />into the river system. <br />Current plan of implementation of a salinity control program runs through 2015. <br />Issues/problems being Major environmental threats: <br />addressed Increasing salinity levels in the river and the effects on agricultural soils in <br />Arizona, California and Mexico and, to an even greater degree inflict economic <br />damage to industrial and municipal water users. <br />Loss of artificially-created wetlands is a major impact of the salinity control <br />program. <br />Participants US Department of Interior; US Department of Agriculture; US Environmental <br />Protection Agency; citizens of AZ, CA, CO, NV, NM, UT, WY, Mexico; state <br />wildlife agencies; Colorado River Basin Salinity Control Forum <br />Sources of technical input State and federal agencies <br />Brief history and present Organization that initiated project: Congress enacted Colorado River Basin <br />status Salinity Control Act. <br />The seven basin states developed a plan of implementation for salinity control. <br />This plan is designed to meet the objective of maintaining the salinity <br />concentrations at or below the numeric criteria established at three lower basin <br />monitoring locations, and to meet commitments to Mexico. The plan is based on <br />the use of long term mean water supply of 15 million acre-feet annually. The plan <br />of implementation includes: <br />1) policies used in all basin states for implementing the salinity standards <br />through the NPDES permit program; and <br />2) salinity control projects implemented through federal funding primarily in the <br />upper basin states. Heavy state and local cost sharing is required. <br />Funding sources Congress, the Basin states and local water users <br />Contact Jack Barnett, Colorado River Basin Salinity Control Forum 106 W. 500 South <br />, <br />Suite 101, Bountiful, UT 84010, (801) 292-4663, FAX: (801) 524-6320