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<br />j) Efficient Landscape Irrigation-- <br />Efficient landscape irrigation relies on valid information regarding the demand of plants and <br />turf grasses for water when it's needed, as well as an efficient layout and design of the <br />irrigation system itself. <br /> <br />The largest single use of water in the City is for the Municipal Golf Course. While this <br />system is set up to utilize raw water, the City has sought to improve the efficiency of <br />application of water to the golf course to match the demands of grasses and landscaping, to <br />minimize water wastage, and to satisfy its obligations to downstream users of the Holden and <br />Marolt ditch systems which utilize the same source of supply. Reduction of water demand <br />for irrigation of the golf course also significantly reduces the cost of pumping water from the <br />ditch system for use on the course. This has been accomplished through installation of a <br />computerized irrigation control system; The computerized system reduced the annual . <br />pumping from the ditch system an estimated 20% annually. <br /> <br />SECTION 3. ADDITIONAL CONSERVATION MEASURES <br /> <br />3.1 Role of Water Conservation in Water Management <br />Existing and proposed water conservation measures play an important role in meeting Aspen's <br />overall water management strategies. The 1994 Water Availability Study summarized in Section <br />1.1 described water shortages expected in both the potable water system and in the raw water system. <br />The shortages would not be significant if not for Aspen's policy of respecting in-stream flow <br />conditions recommended by the Colorado Water Conservation Board for the protection of aquatic <br />life. In effect, any measures to increase water supply or reduce demand to eliminate these shortages <br />are to benefit these values since Aspen's water rights are senior to these in-stream flows. <br /> <br />Selection of strategies to reduce water demand or increase supply needs to recognize both the cost <br />and effectiveness of the measure, For instance, expanding the capacity of the system to produce <br />water from the Roaring Fork River or Hunter Creek would do little or nothing to address water <br />~ ~ ~ .shortages occurring..duringcciticaUlow conditions-in-the.late-summer or -late-wint~HinGe- \Jetl1-of~ <br />these streams are at or below the recommended in-stream flow conditions at these times. Similarly, <br />water conservation measures which address reduction of outside water demand at the peak of the <br />irrigation season (July) would have little or no effect on water shortages since surface supplies are <br />abundantly available at the same time as peak runoff season, even in critically dry years. <br /> <br />Water development and conservation strategies which increase water availability during expected <br />water shortage conditions in both seasons satisfy the criteria for inclusion in the water management <br />program. The maximum expected water shortage at buildout is approximately 4.0 million gallons <br />( <br />per day. Strategies which assist in reducing this deficit at a reasonable cost are considered for <br /> <br />15 <br />