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<br />Castle Rock Water Conservation Master Plan Backaround <br /> <br />With the majority of Town's water produced from deep groundwater <br />aquifers, it is essential to use this resource responsibly and efficiently. By <br />applying a groundwater model to this resource, Town staff will have a tool <br />to not only evaluate our final water supply option, but also to help guide <br />our decisions as factors change over time. The model uses actual well <br />data paired with assumptions to predict future trends and ranges in water <br />levels. Actual well data and controls are input into the model, including: <br />water levels and aquifer properties; maintaining a half-mile buffer between <br />wells; only drilling wells within the Town's future service boundary; and <br />replacing wells over time as they become less efficient. Castle Rock's <br />groundwater model is derived from the South Metro Water Supply Study <br />model, but is updated to include Castle Rock's revised growth and use <br />data. The model provides a framework for assessing the impacts on the <br />groundwater resource over the next 50 years. For additional information <br />regarding the water model, see the Water Resources Strategic Master <br />Plan. <br /> <br />The groundwater model will be used in determining the preferred water <br />supply options. The model will provide a basis on which to evaluate the <br />optimal mix of conservation, reuse, groundwater and renewable water and <br />its impacts the Town's aquifers. <br /> <br />The initial results of the model indicate the Town has time to address its <br />long-term water supply issues. However, the cost to continue down the <br />current path of relying on non-renewable groundwater is high and the time <br />to develop a strategic plan to diversify the Town's water portfolio is now. <br />Many of the renewable water projects required to reduce the Town's <br />dependence on non-renewable groundwater will take decades to see <br />come to fruition. <br /> <br />Surface Water <br />Work continues on evaluating the potential of bringing renewable water to <br />the Town. There are three primary areas where renewable water can be <br />obtained in any great quantity. The <br />scope of the renewable projects is so <br />expansive; Castle Rock alone cannot <br />develop the financial or political <br />capabilities to implement them. The <br />Town's involvement in local and regional <br />efforts is crucial to the Town's success in <br />the renewable water arena. The Town is <br />currently participating in several regional <br />programs, including front-range <br /> <br />TM-1 Background December 2006 <br /> <br />"The Town's involvement <br />in local and regional <br />efforts is crucial to the <br />Town's success in the <br />renewable water arena. " <br /> <br />6 <br />