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<br />07/30/2007 08:54 <br /> <br />3037910437 <br /> <br />HR METRO DISTRICT <br /> <br />WfNDY GAP FIRMING PROJECT- PURPOSU AND NI~ElJ REPORT <br /> <br />PAGE 05/10 <br /> <br />evaluation because CWCWD's I unit of Windy Gap water is used to treat the needs of <br />existing rural customers. <br /> <br />Growth and Population Trend. Between 1990 and 2000 the CWCWD service <br />population grew at an average annual rate of 2.6 percent, or a total of slightly less than 30 <br />percent. In 2002, the CWCWD served an estimated 24,000 people, up from 1.7,050 <br />people in 1999, not includin.g the comm.unities that provide raw water to CWCWD for <br />treatment <br /> <br />Current Water Demand. CWCWD supplies water to roral custom.ers within <br />District boundat'ics_ Non-residential demands accounted for nearly two-thirds of total <br />CWCWD demand in 2002. Non-residential demand is mostly attributable to various <br />agricultural and dairy users, with Aurora Dairy and Fort St. Vrain Power Generation <br />representing the largest users. Total 2002 water demand was about 2,800 AF. <br />Residential water use within. the CWCWD service area was about 162 gped from 1999 to <br />2002. The CWCWD also treats water for the communities previously mentioned. <br />Because the CWCWD is only responsible for providing treatment and not the raw water, <br />these communities were 110t included in the demand evaluation. Total wa.ter use averaged <br />almost 500 gallons per day fOr the same period, but two~thirds of CWCWD water <br />demand was for agricultural and industrial llsers_ <br /> <br />.Projected Water Demand. To arrive at projected residential demand, historical <br />residential use patterns were analyzed. Residential taps are expected to grow at an annual <br />rate of about 4.5 percent until 201 0 and then decline over time to about 1.2 percent by <br />2050. Pmjcctions of future non-residential demands are based on the continuation of the <br />historical average 005 new taps per year. Total water requirements for the CWCWD <br />arc estimated to be 5,900 AF per year by 2050. <br /> <br />Water Need. CWCWD <br />existing water supplies are Comparison of Future Water Demar,ds with 2005 Firm <br />sufficient to meet current water Annual Firm Vield " CWCWD <br />needs during average years of <br />precipitation. Beginning in <br />2005, water demand could <br />exceed available finn water <br />supplies during dry years, <br />depending on C-BT deliveries. <br />Projected water demand <br />exceeds the firm supply by <br />about 1,900 AF in 2030 and by <br />2050 a shortage ofabollt 3~ 100 <br />AFis anticipated. Firming <br />CWCWD's single Windy Gap <br />unit would provide about 100 <br />AF of water, or less than 2 <br />percent of its 2050 water <br />supply. <br /> <br /> <br />38 <br />