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<br /> <br />o <br />w <br /><::> <br />irl.~ <br /> <br />/ <br /> <br />~. <br /> <br />Sunnnary <br />Part I. <br /> <br />Part II. <br /> <br />Part III. <br /> <br />Part IV. <br /> <br />Part V. <br />Part VI. <br /> <br />QUALITY OF WATER <br />COLORADO RIVER BASIN <br />PROGRESS REPORT <br /> <br /> <br />CONTENTS <br /> <br />Page <br /> <br />Introduction . . . . . . . . . . 2 <br />A. Legislative Requirements 2 <br />B. Previous Reports 2 <br />C. Cooperation. . . . . 3 <br />D. Scope. . . . . . . . 3 <br />E. Increasing Importance of Water Quality 4 <br />Description of Basin 5 <br />A. Geology. 5 <br />B. Soils... . 6 <br />C. Climate. . 7 <br />D. Vegetation 7 <br />E. Hydrology. 8 <br />History of Development ,10 <br />A. Acres Irrigated Prior to CRSP Authorization 10 <br />B. Depletions ......... 10 <br />C. Water Compacts and Treaties . 11 <br />1. Colorado River Compact 11 <br />2. Mexican Treaty. . . . 12 <br />3. Upper Colorado River Basin Compact 12 <br />4. Arizona vs. California Suit in <br />Supreme Court 12 <br />D. Economic Conditions 13 <br />Authorized Development . 15 <br />A. Irrigation 15 <br />B. Depletions on New Projects 15 <br />C. Economic Impact 16 <br />Current Proposals 18 <br />Basic Studies .... 19 <br />A. Objectives 19 <br />B. Streamflow and Quality of Water Measuring <br />Stations ..... . . 20 <br />C. Analyses ....... 23 <br />D. Studies of Certain Areas 23 <br />1. Eden Project . . . 23 <br />2. Florida Project 25 <br />3. Salinity Variation in Colorado River <br />below Lees Ferry . . . . . . 27 <br />4. Chemical Quality of GroundWater in the <br />Lower Colorado River Basin 32 <br />5. Flaming Gorge Reservoir . . . . . . . . 34 <br />