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. 58 . The land and Water Fund of the Rockies @ End Notes 1 See Bureau's Operation Plan for Colorado River System Reservoirs Uan. B, 2001). The "Upper Gunnison Basin" figure used here is the average inflow above Crystal Dam. It is not "natural flow" and thus reflects current consumptive depletions made above Crystal. In an average year, the entire Gunnison River, down to its confluence with the Colorado, produces an average natural flow of 2,378,700 AF." See Colorado River Compact Water Development Proiection - Final Report (hereinafter "Final Report"), prepored by the Endangered Fish Flow and Colorado River Compact Water Development Workgraup (Nov. 2, 1995), at 10. The "natural flow" is the "undeplefed and unregulated flow which would have occurred absent the activities of man." Id. at 9. The foregoing report derived these statistics from the Bureau of Reclamation's 1906-1985 Netural Flow Data Base - CRSS..!Q" Bureau personnel and USGS date indicote consumptive use in the entire Gunnison basin (including its many tributaries) is about 475,000 AFA. 2.!Q" 3 See Upper Gunnison River Water Conservancy District Draft Water Management Plan ("Draft Management Plan") Uan. 25, 2002), at 3-1, Table 3-1 (based on USGS data). 4kL 5 Id. 6kL 7 Final Report, at 10. 8 A conditional water right is "a right to perfect a water right with a certain priority upon the completion with reasonable diligence of the appropriation upon which such water right is based." ~ 37-92-103(6) Colorado Revised Statutes ("C.R.S."). 9 See Colorado Water Division No.4, Case Nos. 86-CW-226 and 88-CW-178, Findin9s of Fact, Conclusions of law, and Judgment & Decree in re: Applications for Water Rights by the Board of County Commissioners for Arapahoe County for the Union Pork Project: Phase I on Water Availebility (hereinafter "1991 Water Court Opinion") (Oct. 21, 1991), at 32, \169. 10 Draft Menegement Plan, at 3-4, 3-5, 4-19. 11 kL et 3-3. Although the Draft Management Plan (at 4-19) states averege annual diversions are approxi- mately 325,000 AF, more recent operational forecasts by the Bureau of Reclamation end planning studies by the Western Area Power Administration indicate the quantity is closer to 365,000 AF. Correspondence from Ralph E. Clark, III, to the land and Water Fund of the Rockies (Feb. 21, 20021. The quantity of diversions through the Gunnision Tunnel has grown over the past 30 years. In a dry year diversions through the Gunnison Tunnel have recently been near 430,000 AF and could be more in the future. .!Q" 12 Draft Management Plan, at 3-4 (citing 1990 re-fill decree).