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SB06-193 Underground Water Storage Study Map of Alluvial Aquifer Subregions Underground Storage Study – Exec. Summary Underground Water Storage Presentation Estimated Underground Storage Potential Andy Moore, Colorado Water Conservati on Board (CWCB) and Dr. Gordon McCurry, Camp Dresser & McKee briefed the task force on the study conducted by the CWCB on underground storage area alternatives for surface storage in the Arkansas and South Platte River basins. Andy Moore presented the background of the legislation and identified the sources of information used for the study. He discu ssed the Colorado Geological Survey (CGS) 2004 study and breaking that into four smaller regions and 44 subregions. Dr. Gordon McCurry identified the South Platte River Basin Alluvial Aquifer Subregions and the 15 zones within the subregions. He discussed the hydrogeologic, environmental and implementation evaluation criteria, issues not considered, aspects of the study, method of scoring, and conclusions and recommendations. He stated that many potential areas exist for underground water storage in both basins, further investigation is warranted in areas where there is stakeholder interest and potential water supply. Andy Moore talked about what’s next includi ng 2007 legislative resolutions; SR 07-007 Underground Water Banking Strategies, HJR 07-1017 and upcoming conferences on groundwater management policy. Other ongoing efforts include groundwater evaluations, looking at avenues for funding projects under the CWCB construction fund, severance tax funds, loans and WSRA. The full report on the SB06-193 study can be found on the CWCB website at www.cwcb.state.co.us . Discussion was held with task force members on the timeframe to actually get water into the aquifer, how recharge would be accomplished, where the water would come from, and the immediate relief to well owners vs. long term storage. Traditional Above-Ground Storage Dick Wolfe presented maps and graphs depicting the above ground storage framework. Approved Reservoir Storage – Div. 1 Conditional Water Rights for Storage – Div. 1 Map Existing Dams with Storage – Div. 1 Map He summarized reservoir storage systems above 1000 acre feet. He reviewed approved storage for each dam, conditional water storage when water is available, and potential development. It was noted that developm ent would be more expensive and time consumptive than some of the smaller recharge projects. Discussion was held with the task force members on most senior and oldest conditional water rights, total capacity, silting and lost capacity, and reservoir dredging.