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<br />i <br /> <br />. <br /> <br /> 1. <br /> 2. <br /> 3. <br /> 4. <br />. 5. <br /> 6. <br /> <br />Hydrosphere conducted a survey of the water conservation practices of the City <br />of Aurora, City of Boulder, the Denver Water Department, and the Centennial <br />Water & Sanitation District. The conservation measures and practices employed <br />in these communities are a good indication of trends throughout the metropolitan <br />area. While the survey identified the conservation measures described below as <br />practices that are currently employed by many water suppliers or are likely to be <br />implemented in the future, the manner in which these practices are implemented <br />varies substantially between different water suppliers. <br /> <br />Chapter 4 focuses on exploring water conservation and conjunctive use in terms <br />of their long-term water supply potential and their effects on existing water rights <br />above the Henderson Gage. Hydrosphere has approached this task through the <br />following steps: <br /> <br />An inventory of existing water efficiency measures and practices. <br /> <br />An inventory of existing conjunctive management practices. <br /> <br />Development of quantitative estimates of the water supply effects of <br />existing and projected future water efficiency measures and practices. <br /> <br />Development of quantitative estimates of the water supply effects of <br />existing and estimated future conjunctive management practices. <br /> <br />An analysis of the impacts associated with efficiency and conjunctive <br />management practices on South Platte River flows at the Henderson <br />gage. <br /> <br />An evaluation of the combined effects of existing and future water <br />efficiency and conjunctive m,magement practices on existing water rights <br />above the Henderson Gage. <br /> <br />Key points: <br />1. Water conservation is an important aspect of water supply planning. <br />Hydrosphere's survey shows that water conservation has saved 100,800 <br />acre-feet of water for the metro area water providers at current use <br />levels. (see Table 2-3, Chapt. 2, Technical Addendum No.1) <br />2. Little conjunctive use is practiced currently in the Denver metro area with <br />most being done by Centennial Water and Sanitation District (654 acre- <br />feet in 1996) <br />3. Future conjunctive use has significant potential to reduce Denver Basin <br />ground water pumping through the storage above and below ground of <br />surplus surface water flows. Douglas County water providers are more <br />fully evaluating this potential. <br /> <br />. <br /> <br />ChaDter 5 - Effect of Existing Water Reuse on Future Water Supply and on <br />Existing Water Rights (Technical Addendum No.1, Chapter 3) <br /> <br />.7- <br />