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<br />.1 <br /> <br />BIG SANDY RIVER UNIT SALINITY STUDY <br />WYOMING <br /> <br />Table of Contents <br /> <br />Page <br /> <br />SUMMARy....................................................... S-l <br /> <br />INTRODUCTION.................................................. 1-1 <br /> <br />Authori ty for Study ...................................... 1-1 <br />Objectives and Scope..................................... 1-1 <br />Projects and Programs of Other Agencies .................. 1-3 <br /> <br />CHAPTER 1 <br />PROBLEMS AND NEEDS <br /> <br />....................................... <br /> <br />1-1 <br /> <br />Sa 1 in i ty Problems ................................... 1-1 <br />Irrigation Systems Analysis and Management <br /> <br />Improvement Needs ................................. 1-1 <br />Diffused Area Watershed Management .................. 1-7 <br /> <br />CHAPTER 2 <br />PROGRAM DEVELOPMENT AND STUDY PARTICIPATION <br /> <br />2-1 <br /> <br />Colorado River Water Quality Improvement Program .... 2-1 <br />Big Sandy River Unit Interdisciplinary Study Team ... 2-3 <br />Local Coordinating Committee........................ 2-3 <br /> <br />Public Meetings ..................................... 2-3 <br />Interagency Archeological and Fish and Wildlife <br /> <br />Coordination...................................... 2-4 <br /> <br />CHAPTER 3 <br />ALTERNATIVES AND THEIR IMPACTS ........................... 3-1 <br /> <br />Alternatives Considered to Reduce Salt Loading <br /> <br />Prob 1 ems .......................................... 3-2 <br /> <br />Alternative 1 - Future without a project--No <br /> Ac t ion .......................... 3-2 <br />Alternative 2 - Minimal structural improvemen t .... 3-2 <br />A lterna t i ve 3 - Sprinkler irrigation (Pumping plant <br /> and pipeline from reservoir) .... 3-3 <br /> <br />Alternative 3A - Sprinkler irrigation (6 Pumping plants <br />along present canal system)...... 3-4 <br /> <br />Alternative 3B - Sprinkler irrigation (individual <br />fann pumping station) ........... 3-5 <br /> <br />~-\ r r '" ~ <br />(,)I...;vU <br /> <br />-i- <br />