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<br />PREFACE <br /> <br />l'\) <br />en <br />~ <br />0') <br /> <br />Evaluation of the impacts of water quality in the Colorado River has become <br />an inqreasing concern to policymakers, resource planners. and the general <br />public. As development and utilization of this resource continue. the quality of <br />the water will degrade. resulting in an increase of negative impacts. <br /> <br />Until (ecently. evaluation of the impacts associated with changing levels of TDS <br />(total ~issolved solids) has not been included in the economic analyses of future <br />water-related projects. In 1974. Water and Power Resources Service <br />economists prepared a preliminary analysis of the economic impacts of salinity <br />in theCol.orado River Basin to provide planners with additional insight for this <br />area of project evaluation. Major salinity impacts were identified and evaluated <br />as the situation permitted; however, time and resources were limiting factors <br />and a more in-depth analysis was recommended. Subsequently. substantial <br />efforts were made by researchers from the Water and Power Resources <br />Serviqe. the University of California, and the University of Arizona to achieve <br />a high degree of analytical reliability. <br /> <br />The results of the analysis are intended to provide a more comprehensive <br />working document with which Water and Power and other planners can better <br />account for the impacts of salinity in the future planning of mitigation as well <br />as development projects for the Colorado River. <br /> <br />Research supporting the findings of this report was conducted under the <br />Colorado River Regional Salinity Research Project cosponsored by the Office <br />of Water Research and Technology (Project B-1 0 7 Utah) and the Water and <br />Powe'r Resources Service. Additional information related to the study <br />preseilted herein and other salinity research efforts may be found in the final <br />report: "Salinity Management Options for the Colorado River,'" <br /> <br />;;; <br /> <br />, And,ersen. Jay C., and Kleinman, Alan P.. at al.. Water Resources Planning Research Report <br />P-7S-003. Utah Water Research Laboratory, Utah State University. Logan. June 1978. <br /> <br />iii <br />