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<br />CWCB Water Conservation Planning Grant Application <br /> <br />City of Rifle <br /> <br />2.3 5-Year Water Demand <br /> <br />Table 2 summarizes historical estimates for potable water production, and d{~liveries of <br />raw irrigation water for the period 2002 through 2006. Tabne 2 also summarizes 2006 <br />water use volumes by customer class based on available water billing data. Concerns <br />about the quality of water billing data extracted for pre-2006 years and limited budget for <br />grant application development precluded further investigation and reporting of pre-2006 <br />billing data. These data will receive further consideration during development of the <br />conservation plan. <br /> <br /> Table 2. Historic Water Production and Delivery <br /> Estimated A vg. Annual Raw Estimated Average Annual <br />Yr. Potable Water Production1 Park Total Potable Water Consumotion3 <br /> GMWTP BCWTP Total Irr? Comm I Govt I Ind I Sok I Res I Total <br /> (MGD) (MGD) (MGD) (MGD) (Ae- (MGD) I (Ac- <br /> ft!yr) ft!yr) <br />2002 No Data Available 0.23 NA <br />2003 1.22 0.16 1.39 0.23 1,815 No Data Available <br />2004 1.23 0.14 1.37 0.23 1,792 <br />2005 1.28 0.05 1.33 0.23 1,748 <br />2006 1.28 0.15 1.43 0.23 1,860 0.27 I 0.14 I 0.08 I 0.001 1 0.91 1104 11,568 <br /> 1. Water production estimated based on raw water intake volume and calculated % production waste. GMWTP = <br /> Graham Mesa WTP; BCWTP = Beaver Creek WTP <br /> 2. City parks raw water irrigation volumes are estimates based on diversion rights and approximate % diverted as <br /> reported by City staff; water conservation plan will include better estimate based on diversion records research. <br /> 3. Potable water consumption based on water meter data extracted from existing billing database; 2002 to 2005 <br /> records are not included as they are currentlv subiect to additional investigation for accuracy. <br /> <br />Table 2 shows that potable water production has not increased significantly over the <br />2003 to 2006 period, despite the fact that population has been increasing steadily (Table <br />5). This apparent inconsistency is best explained by two items: (a) the City's historical <br />major water consumer, a natural gas-fired power plant, reduced its demand significantly <br />after 2003 when its production was reduced due to high natural gas prices, and (b) the <br />values are estimated based on plant raw water flows. It is assumed here that 7.5% jump <br />from 2005 to 2006 may be more indicative in the growth in water demand likely to <br />accompany future population growth. <br /> <br />2.4 Projected Future Water Demand <br /> <br />Table 3 presents projections of potable water production and raw water deliveries for a 5- <br />year period, 2007 through 2011. The basis for the projected water demand growth is that <br />water use by all sectors except raw water irrigation will grow in proportion to the <br />projected population shown in Table 5. That is, all future use will occur off of the <br />potable system with the exception of existing City Park raw water irrigation. Based on <br />the predictions shown below and predicted population growth, the City of Rifle's total <br />annual water deliveries may exceed 2,000 acre-feet in 2008. <br /> <br />2-3 <br /> <br />Section 2.0 - Required Grant Application Info. <br /> <br />SGM # 99055A-387 <br />