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I I I" . . Draft Water and Storage Needs Assessment SECWCDI Assessment Enterprise iv September 23,1998 Fry-Ark Project Reoperation Pueblo Reservoir Enlargement lake Meredith Enlargement Turquoise Lake Enlargement Clear Creek Reservoir (New) ~'!:i;;:;~i;i~"JlI'r!I;!;li;!iL'H: 90,000(21 , 75,000 80,000 9,000 100,000 28,000 16,000 ' (additional to 12,000 af planned by Colorado Springs) 13,000 (with potential for more in future) Tennessee Creek Reservoir WiJliams Creek Reservoir Gravel Lakes Storage (1) Estimated maximum volume of storage based on initial configurations. (2) Estimated potential volume available withouf consideration of East Slope decrees. . Volume may not be available In all yea",. Various combinations of these options should be evaluated in greater detail to identify a preferred plan and several alternatives for evaluation during compliance with requirements of the National Environmental Policy Act (NEPA), Storage costs are estimated to range from $150 per af ~Turquoise Enlargement) to $3,000 per af (Gravel Lakes Storage), Depending on how storage options are combined, total costs to develop 159,000 af of additional storage could range from $34 to $ I 74 million, The lower cost is heavily dependent on whether "reoperation" can be technically and legally accomplished or whether all of the storage must be developed in new or enlarged reservoirs, In summary, municipal water demands, primarily developing in the Fountain VaHey area (Colorado Springs, Fountain Security, Widefield, and Stratmoor Hills) of the District, will require development of additional water storage capacity, Coupled with dedicated storage for the Winter Water Program and other potential partners, the storage need will range from 65,000 to 159,000 af. The need will begin to develop over the next 10 to 20 years, Therefore, studies should be initiated in the near future to further evaluate alternative storage options in terms of technical and environmental performance, Reoperation of Fry-Ark Project storage is likely to be an important element of an overall water management strategy, Coupled with possibilities for enlarging Project reservoirs, this means that detailed discussions with the Bureau of Reclamation should be undertaken soon, in order to fully ~ GEl Consultants, Inc. 97411\REPORTS\TEXT -A.WPD