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Section 5 Addressing the Water Supply Gap Technical Roundtable The yield from this project based on supply availability has been preliminarily analyzed. As with any new west slope consumptive use, the issue of supply availability and other considerations would be required before a detailed determination could be made on available yield for this project. There are issues associated with developing a customer base, compact administration, financing, permitting, technical, political, and other issues. Agreements with end water users have not been identified. Concerns have been raised by certain water users in Colorado regarding supply availability, potential impacts on existing Colorado water rights and administration of any new depletive Colorado River water right. Among other concerns, the potential diversion upstream of Dinosaur National Monument, coupled with potential impacts to federal endangered fish species downstream of the proposed diversion sites, are significant issues that could impact the implementation schedule or affect the viability of this project. The following are some of the key considerations when examining the project elements, benefits, potential implementation issues and potential attributes for this alternative. Project Elements ~ Diversion and 500,000 storage reservoir near Maybell. ~ Pumpback to South Platte Basin. ~ New 75,000 storage reservoir in South Platte Basin. ~ Deliver to existing or planned pipelines in Brighton area for delivery to south metro water providers. Benefits: ~ Minimize loss of irrigated acres in South Platte and Arkansas Basins. ~ Maximize Colorado's Colorado River Compact entitlement. Implementation Issues: ~ Potential for increased compact call. ~ Large energy requirements. ~ Endangered species on Yampa and Green Rivers. ~ Dinosaur National Monument located downstream of proposed diversion. Potential Attributes: ~ Multiple Front Range delivery locations. ~ West Slope and East Slope storage. ~ East Slope hydropower facilities. 5.4.8 Considerations in Developing Structural Alternatives There are significant supply availability, schedule, permitting, supply availability, and cost uncertainties with each of the structural alternatives described in this section. Successful implementation will involve partnering with other water providers and other agencies. Table 5-5 presents a summary of potential considerations on water source, conveyance and storage, water quality, treatment costs, technical implementability, permitting acceptability, and timely implementation. 5-42 FINAL DRAFT