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<br />Gunnison Basin Water Supply <br />and Needs Report <br /> <br />. ." ~.~.~~......~,...-;,~....~\ <br /> <br />Gunnison Y <br />Basin' \. <br />'Lr <br />l~ <br />- ~~-'". <br /> <br />Section 1 Introduction <br /> <br />1.1 The Interbasin Compact Process.............................................................................................. 1-1 <br />1.2 The Statewide Water Supply Initiative....................................................................................... 1-1 <br />1.3 Major Findings of SWSI.............................................................................................................1-2 <br />1.4 Major Findings in the Gunnison Basin ............................................................ ........................... 1-3 <br /> <br />1.5 SWSI Phase 2 ...........................................................................................................................1-3 <br /> <br />1.5.1 The 80 Percent Solution for M&I............................................................................... 1-4 <br />1.5.2 The 20 Percent M&I Gap, Agricultural Shortages, and Environmental and <br />Recreational Enhancements..................................................................................... 1-4 <br />1.6 An Overview of the Gunnison Basin Water Supply and Needs Report .....................................1-5 <br /> <br />Section 2 Statewide Demographic, Economic, and Social Setting <br />2.1 Colorado's Historical and Projected Demographics ..................................................................2-1 <br /> <br />2.1.1 Population................................................................................................................. 2-1 <br /> <br />2.1.2 Additional Demographic Information......................................................................... 2-2 <br /> <br />Section 3 Physical Environment of the Gunnison Basin <br /> <br />3.1 Statewide Overview................................................................................................................... 3-1 <br />3.2 Gunnison Basin Physical Environment...................................................................................... 3-2 <br /> <br />3.2.1 Geography................................................................................................................ 3-2 <br /> <br />3.2.2 Climate...................................................................................................................... 3-2 <br /> <br />3.2.3 Topography............................................................................................................... 3-2 <br /> <br />3.2.4 Land Use .................................................................................................................. 3-2 <br /> <br />3.2.5 Surface Geology ....................................................................................................... 3-2 <br />3.2.6 Surface Water........................................................................................................... 3-3 <br /> <br />3.2.7 Groundwater.................................................... ......................................................... 3-3 <br /> <br />3.2.8 Water Quality ............................................................................................................ 3-3 <br />3.2.9 Areas of Environmental Concern, Special Attention Areas, and Threatened <br />and Endangered Species......................................................................................... 3-4 <br />3.2.10 Energy and Mineral Resources................................................................................. 3-4 <br /> <br />Section 4 Legal Framework for Water Use <br /> <br />4.1 Overview of State Water Laws .................................................................................................. 4-1 <br />4.1.1 Colorado/s Prior Appropriation System..................................................................... 4-1 <br />4.1.1.1 The Priority System.................................... .............................................4-2 <br />4.1.1.2 Beneficial Use ......................................................................................... 4-2 <br />4.1.1.3 Maximum Utilization ................................................................................ 4-3 <br />4.2 Specific Tools for Addressing Water Needs .................................................................. ............ 4-3 <br />4.2.1 Water Storage Rights............................................................................................... 4-3 <br />4.2.2 Conditional Water Rights.......................................................................................... 4-4 <br /> <br />COLORADO <br /> <br />~ <br /> <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br /> <br />CONI <br /> <br /> <br />S:\1177\Basin Reports\Gunnison\TOC_Gunnison.doc <br />