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16:1 12 7. Glen Canyon Glen Canyon Dam shall be operated to comply with applicable law and project purposes, Operational changes for recreation, fishery or environment shall minimally impact hydropower production. The federal government shall pay for replacement power due to operational change for recreation, fishery or environment. Resolution 97.4 COLORADO RIVER SALINITY CONTROL The Cnngress and Administration shall adequately fund and c.ontinue to implement, in a timely and cost-effective manner, the measures to control Colorado River salinity authorized in the 1974 Colorado River Basin Salinity Control Act as amended in order to maintain, as required by federal law, the Basin-wide water quality standards adopted by the seven Colorado River Basin States and approved by the United States Environmental Protection Agency, Position Statement Colorado River Salinity Control (Resolution 97-4) The Colorado River provides important water supplies for more than 23 million Americans in Arizona, California. Colorado, Nevada, New Mexico, Utah and Wyoming. About 3.5 million acres are irrigated within the Basin and hundreds of thousands of additional acres arc irrigated by waters exported from the Basin. The Colorado River also serves about 1.7 million people and half a million acres of irrigated farm lands in the Republic of Mexico. The Colorado River Basin States and Iheir water users have consistently worked with the executive, legislative and judicial branches of the federal government to assure a fair and effective allocation of the River's water supply within the terms of the law of the river. Preserving the Basin States' ability to develop their apportioned water supplies necessitates maintenance of the Basin-wide water quality 13 standards for salinity. Without implementation of additional salinity control measures, Colorado River salinity arc expected to increase to about 790 milligrams per liter (equivalent to parts per million) below Hoover Dam; to 810 milligrams per liter below Parker Dam; and to 920 . milligrams per liter at Imperial Dam by the year 2015. At cu,:ent salinity levels. the economic damages from high salImty currently experienced by municipal, industrial and agricultural users of the Colorado River water in the United States are estimated to be in excess of $750 million per year. Should the salinity levels increase to the numeric criteria levels specified in the water quality standards for salinity. these damages could exceed $1 billion per year by the year 2015. The Colorado River Basin Salinity Control Act provides the means for the United States to meet the national water quality obligation to the Republic of Mexico established in 1972 by Minute 242 and to maintain the Basin-wide water quality standards adopted by thc seven Colorado River Basin States and approved by the EP A pursuant to the Federal Clean Water Act. In 1974, Congress enacted the Colorado River Basin Salinity Control Act (PL 93-320) to implement a 1973 salinIty agreement with Mexico as well as a program for controllmg Colorado River salinity levels within the United ~tales. P~rsuant to that Act, numeric salinity criteria for the fiver ~nd ~ plan for implementing salinity control measures to mamtam that criteria were developed and adopted by the se"en Colorado River Slates and approved by the U.S. EnvlTonmental Protection Agency (EP A). In 1984, PL 93- 320 was ~ended to provide additional salinity control act~v~ues mcluding a new voluntary, cost-shared, on-fann sahmty control program by the Department of Agriculture, In 1995, Congress enacted PL 104-20 which provides reclamation with progranunatic authority to initiate new federal an~ non-federal salinity control program, In 1996, the USDA s program was combined with three other progranlS into the newly-created Environmental Quality Incentlves Program within the new Federal Agriculture Reform and Improvement Act (PL 104- I 27).