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Average Annual Water Demand for Power Generation <br />Estimates of current and future water use at various power generation <br />facilities in Colorado were obtained from power producers, such as Xcel and <br />Calpine. In addition, BBC Research & Consulting provided supplemental <br />information that permitted separation of power generation data by county <br />from their Yampa Valley Water Demand Study (1998). Water use data were <br />obtained for a total of 15 facilities throughout the state. These data are listed <br />in Table 10 by facility. <br />When the timing of facility expansion (i.e., increase in future water use) was <br />unknown, it was assumed that the increase in water demand would occur in <br />the year 2015, the mid-point of the 2000 - 2030 planning period. The Yalley <br />study indicated that future increases in water use would occur at both the <br />Craig (Moffat County) and Hayden (Routt County) facilities. In addition, this <br />study cited planned development of new power generating capacity within <br />the Yampa Valley. It was assumed this development would be on-line in <br />2015. Water demand for this new development was divided evenly between <br />Moffat and Routt County as shown on Table 10. The aggregate future water <br />demand for power generation in Moffat and Routt Counties in 2030 was <br />interpolated from the BBC projected water demand for 2025 and 2045. <br />Estimated water use for power generation for counties summarized in Table <br />10 is provided by year in Appendix B. Information on current and future <br />water use for power generation throughout the state could be further refined <br />with additional data collection. <br />IIL Data CollectionandAnalysis 23 <br />