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• Board Meeting Date: 1/23/2008
• Description: OWCDP Section - Town of Castle Rock - Synthetic Turf Project
• Board Meetings - Doc Type: Memo

Castle Rock Synthetic Turf Project
Application for Water Efficiency Grant
Figure 3 shows projected annual potable and raw water demands through buildout,
without conservation. Total potable arulual water demands are estimated to increase
by approximately 11,200 AFY from 2007 to buildout with a potable water demand of
18,740 AFY at buildout. Raw water demand is anticipated to remain at 260 AFY,
assuming continued use of untreated Denver Basin groundwater for irrigation of the
Red Hawk Ridge Golf Course.
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Figure 3: Projected Annual Water Demands
1.3 Water Supplies
Castle Rock currently relies on 49 Denver Basin groundwater wells for its potable
water supply. The Denver Basin, which supplies water to much of the south metro
area and northern El Paso County, is anon-renewable basin. Although Castle Rock
can currently meet its water supply needs, it is projected that continued use of Denver
Basin groundwater as the primary source of south metro area water providers would
result in a continued decline of groundwater levels. This is attributed to the growing
population and to the regional dependence on groundwater. In that event, it is
anticipated that the costs to maintain groundwater production rates (e.g., redrilling
wells; increased pumping energy requirements) to meet demands will escalate to the
point that this source is no longer economically viable.
Castle Rock's Water Resources Strategic Master Plan outlines its preferred future
water supply alternative as a mixture of Denver Basin groundwater (17 percent by
2055), Castle Rock's Plum Creek alluvial rights (9 percent by 2055), water reuse