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San Luis Valley Irrigation District 2006-2007 Non-Reimbursable Project Application Page2of11 1. Name of the study or project: Rio Grande Reservoir Multi-Use Enlargement Study 2. What is the purpose of this grant application' To fund the study of a) the physical and. legal feasibility of enlarging Rio Grande Reservoir; and, b) the potential uses of an enlarged Reservoir to address multi-use needs in the Rio Grande River Basin including management and administration of the State's Compact entitled waters and potential solutions to water supply and distribution problems in the Basin. 3. General location of the study or demonstration project. (Please include county, and approximate distance and direction from the nearest town): Rio Grande Reservoir is located in Hinsdale County, Colorado, approximately 30 miles southwest of Creeds, Colorado. The Reservoir is located on the headwaters of the mainstem ofthe Rio Grande River and. has a present storage capacity of approximately 54,000 acre-feet nearly all of which is stored for irrigation purposes. Water stored in Rio Grande Reservoir can be delivered via the Rio Grande mainstem for use in Hinsdale, Mtneral, Alamosa, Rio Grandy and Saguache Counties. ~ 4. Please provide a brief narrative description of the proposed study or demonstration project including purpose, need, and service area. (Attach scope of study, if available) Introduction: Rio Grande Reservoir is situated on the headwaters of the Rio Grande River £avorabty iocat~l to deliver water throughout the Rio Grande River Basin. downstream to the border with New Mexico. The Reservoir's present storage capacity is approximately 54,000 acre-feet with the vast majority of that capacity being utilized by the San Luis Valley Imigation District, the owner and operator of the Reservoir, for the storage of water for delivery to irrigated lands within the District's service area. around Center, Colorado. The Reservoir also is utilized for the storage of small amounts of Compact water (water which maybe needed in a water year for delivery by Colorado to New Mexico under the terms of the Rio Grande Compact), transmountain water for augmentation of domestic and commercial development along the Rio Grande pursuant to the San Luis Valley Water Conservancy District's augmi~ntation program, transmouritain water for use by the Colorado Division of Wildlif+~ to meet recreational demands, and of direct flow storage water for irrigation, under decrees issued in Case Nos. W-3979, W-3980 and 95CW18, I3istrict Court, Water Division No. 3. The Reservoir does not have an established conservation pool but the District maintains a pool pursuant to a storage agreement with the Division of Wildlife.