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<br />Interim Water Supply and Needs Report for the <br />South Platte Basin and Denver/South Metro Counties <br /> <br />Section 7 Availability of Existing Water Supplies in the South Platte Basin and <br /> <br />Denver/South Metro Counties <br /> <br />7.1 Methods and Tools Employed to Evaluate Surface Water Supply Availability.......................... 7-1 <br />7.2 Overview of Groundwater Supplies and Availability.................................................................. 7-1 <br />7.2.1 Definition of Groundwater Resources.......................... .............................................7-1 <br />7.2.2 Denver Basin Bedrock Aquifers ........................................ ........................................ 7-2 <br />7.2.3 Designated Groundwater Basins .............................................................................. 7-6 <br />7.2.3.1 Designated Basins Other Than the High Plains...................................... 7-6 <br />7.2.3.2 High Plains Aquifer .................................................................................7-6 <br />7.3 Available Surface Water and Alluvial Groundwater Supply....................................................... 7-6 <br />7.3.1 Surface Water Supplies ..........................................................................................7-8 <br />7.3.2 Alluvial Aquifer ........................................................................................ 7-16 <br /> <br />Section 8 Options for the South Platte Basin and Denver/South Metro Counties <br /> <br />8.1 Methods Employed to Assess Water Needs .............................................................................8-1 <br />8.2 Implications of Uncertainty in Identified Projects/Processes and Existing Supplies............ ...... 8-2 <br />8.3 Identified Projects and Processes in the South Platte Basin and Denver/South Metro <br /> <br />Counties .............................................................................................................................. ....8-3 <br /> <br />8.3.1 Identified Projects and Processes for M&I, SSI, and Agricultural Users ................... 8-6 <br />8.4 Specific Issues in the South Platte Basin and Denver/South Metro Counties......................... 8-13 <br />8.4.1 Gap Analysis Issues ............................................................................................... 8-13 <br />8.4.2 Supply Availability Issues .......................................................................................8-15 <br />8.4.3 Summary of Conditional Storage Rights................................................................. 8-15 <br />8.4.4 Summary of Restricted Reservoirs and Potential Storage Sites............................. 8-16 <br />8.5 Environmental and Recreational Options................................................................................ 8-16 <br />8.5.1 Overview of Environmental and Recreational Options............................................ 8-16 <br />8.5.2 Existing Statewide Environmental and Recreational Options ................................. 8-24 <br />8.5.3 Possible Future Statewide Environmental and Recreational Options..................... 8-25 <br />8.6 Potential Options for Addressing Remaining Water Needs and Enhancements ..................... 8-28 <br /> <br />Section 9 Options for Meeting Future Water Needs <br /> <br />9.1 Developing Options for Future Water Needs............................................................................. 9-1 <br />9.2 Families of Options.................................................................................................................... 9-1 <br /> <br />9.2.1 Conservation............................................................................................................. 9-2 <br /> <br />9.2.1.1 Municipal and Industrial Water Conservation.......................................... 9-2 <br />9.2.1.2 Evaluating New Supply from M&I Water Conservation ........................... 9-5 <br />9.2.1.3 Agricultural Conservation (Efficiency Improvements) .............................9-6 <br />9.2.2 Agricultural Transfers................................................................................................ 9-7 <br />9.2.2.1 Permanent Agricultural Transfers ...........................................................9-8 <br />9.2.2.2 Interruptible Agricultural Transfers.......................................................... 9-9 <br />9.2.2.3 Rotating Agricultural Transfers with Storage to Firm Agricultural <br /> <br />Demands .......................................................................................... 9-9 <br /> <br />9.2.2.4 Water Bank ........................................................................................9-10 <br />9.2.3 Development of Additional Storage ........................................................................ 9-11 <br /> <br />CONI <br /> <br />S:\1177\Basin Reports\South Platte\TOC_South Platte. doc <br /> <br />iii <br />