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.. Water and Storage Needs Assessment SECWCD/Assessment Enterprise, ' December 10, 1998 District water' users; projection of future populations and demands for water in the municipal sector; an assessment of historic agricultUral water use; assessment of water and storage needs;,and evaluation of potential water supply storage' and management options for the District to consider. The District is shown on Figure ES-l. The District entiti~ current1y~e an average approximately 1 million acre-feet (at) peryear of which 80 percent is for irrigation. H agricultural use is held constant, total water use in the ' District is projected to increase to nearly 1.2 million'a!per year Wlder a ''high growth" scenario. Key findings pfthe Assessment Project studies are summarized below: 1. District population, Figure ES-2, is expected to ,increase by 572,000 to 1,006,000 persons, depending on whether a "base" or ''high'' .forecast is used Municipal water demands in the District's service area are expected to be approximately 95,000 to 187,000 af hi~er than the current levels, Figure ES-3. The larger incremental water demand is based on a population growth rate equivalent to 2.3 percent per year. , , 2. The major municipal water supply entities in the District, and ,many of the smaller entities, have adopted water conservation measures that meet or exceed requirements established by the CWCB's Office of Water Conservation. Typical conservation measur~ implemented in the municipal sector include water meters, water-efficient fixtures and appli~ces, public education, water uSe audits, water 'efficiency ordinances,' water reuse, and other measUres. The water demand forecasts prepared for the Assessment Project incl~ded a reduction in future per ~pita water use to reflect successful conservation efforts~, On a District-wide basis, current per capita use averages 213 gallons per capita per day (goo); future use is estimated to be 182 gcd, reflecting over a 1 o percent reduction in per capita use. 3. Water resources, available to municipal entities are generally adequate to meet demands for the l;lase case scenario (97,000 'af of additional demand),. except for certain ,entities ~ the FOWltain Valley and several towns West of Pueblo. Approximately 21;300 af of additional water supply will be needed (Wlder base projections), unless other entities are willing to reallocate water supplies that exceed, their forecast needs. 4. For the high growth scenario (187,000 af of additional water demand), the total additional water supply need is estimated to be 81,800 af, as shown in the table below, primarily in Colorado Springs, the other Fountain Valley Authority (FV A) entities, and several towns west of Pueblo. The Colorado SpringsIFY A demands ' I GEl ~nsultants, Inc. -ii- 974111'InIUlTEXl'-A. WPD I I I I I I 'I I I -J J I I 11 'I il II II II