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subsequent use. In contrast, most customers of the Super Ditch project are likely to be municipal entities or other domestic water providers, which have year-round demands. In order to ef�ectively re-time the Super Ditch water to meet customer needs, it will be necessary to store the water at least part of the year in at least some years. Water will likely be diverted into storage during the irrigation season (a change of usage for certain water rights from direct flow to storage will be required). Stored water can then be released back to the river when necessary to facilitate exchange operations. Alternately, storage reservoirs may serve as forebays for pipeline/pumping facilities, with stored water pumped from the reservoirs and delivered to specified locations to meet customer needs. The next phase of analysis will identify key storage options that could be readily incorporated into the Super Ditch system infrastructure. It is hoped that existing reservoirs could be used as much as possible. While it may be necessary to pursue changes in some of the associated water rights, this Scope of Work will only identify such issues. Storage identified as having the potential for inclusion in the Super Ditch system includes the following, among others: • Winter Water Storage Program • Timber Lake • Gravel Pits • Pueblo Reservoir "If and When" Storage Deliverable. The analysis will include the identification of other storage, summarization of existing storage capacities and water rights, and a cost estimate for proposed or possible modifications to increase storage. This task will result in an alternatives analysis that can be used to make decisions about optimizing available and new storage options to deliver water from valley irrigators to municipal and other water users. Task C. Technical Assistance for Ditch Companies (Water Supply Reserve Account Grant Program) Essential to the success of the Lower Arkansas Valley Super Ditch Project is that there cannot be any injury to other water users, including those ditch com.pany shareholders who choose not to participate. For example, the maintenance of proper flows in the ditches will be necessary to assure that the non-participating shareholders' irrigation allotments are not diminished. To answer this question, the ditch companies will need to examine their existing infrastructure, including the following: • Existing ditch geometry (e.g., length, width, depth, channel shape, slope, etc,) and physical condition (e.g., lined or unlined) • Carrying capacities of the ditches, based on the previous item • Number, location, and physical characteristics of laterals • Location and condition of check structures • Number and location of diversion structures for on-farm deliveries • Tailwater returns • Cropping patterns This information will help to determine restrictions on water transfers that may be January 22, 2009 2