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<br />07/30/2007 08:54 <br /> <br />3037g10437 <br /> <br />HR METRO DISTRICT <br /> <br />WINDY GAP FIRMING PROJECT - PURPOSE AND NEED RE:PORT <br />-...........------.. -'*--'--",,--, <br /> <br />Water Need. Existing <br />water supplies are currently <br />sufficient to meet Eric's <br />water needs during average <br />years of precipitation. <br />Beginning in 2005, water <br />demand could exceed <br />available finn water <br />supplies during dry years, <br />depending on C-BT <br />deliveries, A finn water <br />supply shortage of about <br />6,800 AF is estimated by <br />buil.dout in 2025. Firming <br />Erie"s Windy Gap Project <br />water supply would provide <br />up to 2,000 AF of water, or <br />about 22 percent of the <br />Town's 2025 water supply, <br />not including the reuse of <br />about 50 percent of the Windy Gap yield to meet irrigation demands. <br /> <br />Comparison of Future Water OlImands wirh 2005 <br />Annual Firm Yield. 5'"ie <br /> <br />10.000 .-.-.-.....-.-...-.-......-.--..----------..-----.! <br />9.000 ., j <br />8,000 <br />7,000 <br />; 6,000.. <br />~ 5,000 <br />i! <br />.i: 4,000 <br />3,000 .. <br />2,000 I <br />1,000 t <br />0, <br />~~ <br />'l; <br /> <br /> <br />~x \~~f;;\ I, ;i <br /> <br />....1:\ <br />'l-~ <br /> <br />,':I <br />'l-~ <br />Year <br /> <br />~ <br />~ <br /> <br />~ <br />~ <br /> <br />Annual firm yield does nol include reuse water, <br /> <br />9.4 City of Evans <br />The City of Evans is I.oeated in south-central Weld County just south of the City of <br />Greeley, Evan.s is a highly diversi:fied and stable community experiencing significant. <br />growth and development. <br /> <br />Existing W:der Supply. The City of Evans currently relies on transbasin water from <br />the C-BT Project and five local ditch companies for its potable water supply. Evans <br />recently completed a lease/purchase for 5 units of Windy Gap water. All of Evans' <br />potable water is treated by the Cil:)' of Greeley. Evans provides raw water to Greeley <br />each year equal to Evan.s' projected warer demand, plus an additional amount to account <br />for shrinkage losses incurred by Greeley. Evans' non-potable water supply includes the <br />Evans Town. Ditch, which currently exceeds the City's non-potable demand. The current <br />finn annual water supply available to Evans is about 9,298 AF. In addition, Evans <br />rcceives return flow credit from native water sources, which provide a variable supply of <br />about 400 AF of reuse water for meeting return flow obligations. Evans estimates up to <br />85 percent of its Windy Gap water could be reused jfthc WGFP is implemented. <br /> <br />Growth and Population Trend. Between 2000 and 2002, the City of Evans ranked <br />among the fastest growing cities in Colorado. Over this period, Evans grew at an average <br />annual rate of 7 percent. Between 1990 and 2004, Evan's population grew from about <br />5,900 to 15,000. <br /> <br />Current Water Demand. The City of Evans is responsible for providing water to <br />the residential, commcrcial, industrial. and public users located within its service area. <br />Approximately 95 percent of Evans' customers are residential. Evans currently serves <br />14,860 residents within the clty limits and provides water to 2,394 residents within the <br />Arrowhead and HiIl-N-Park subdivisions. Currently no large watcr users are served by <br /> <br />40 <br /> <br />PAGE 07/10 <br />