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.""," "-"".7).)-.\ '1' f ~ t .~~'~~~i ,; , , HISTORY 01' TIlE GLEN CANYON BNVIRONKBNTAL STtJDIBS 1956 Construction authorized for Glen Canyon Dam. 1963 Glen canyon Dam construction completed. 1964 First power generation at Glen Canyon. 1966 Congressional authority for the Glen Canyon Dam Uprating study. " " 1975 Funding available for the Glen Canyon Dam Uprating study. ;'-;- 1979-1981 Public Study, a series seeping meetings. 1980 Glen Canyon Dam filled with a total capacity of 27 mil- lion acre feet. meetings about the Glen Canyon Dam Uprating of seven newsletters to the public, and ~~~ (", '" ,..; , .,. 1983 Secretary of the Interior initiates the Glen Canyon En- vironmental Studies. 1983 Meeting with U.S. Fish and Wildlife Service, National Park Service, Bureau of Reclamation, and Arizona Department of Game and Fish to develop research plans, determine costs, and initiate field work on the Glen Canyon Environmental Studies. June 3 to Auqust 11, 1983 Flows exceeding powerplant capac- ity (31,500 cubic feet per second) are bypassed at Glen Can- yon Dam and reach 92,500 cfs. Sept-mber 1983 Agency inspection trip (with members of Bu- reau of Reclamation, National Park Service, U.S. Geological Survey, U.S. Fish & Wildlife Service, Arizona Game and Fish Department, commercial river runners, and consultants to the agencies) to determine impacts of the 1983 high water, deter-. mine the value of future Glen Canyon impact studies, and de- velop recommendations on how and whether to continue the Glen Canyon Environmental Studies. January 30, 1984 Based upon the recommendations of the agency inspection trip, the Action commissioner of Reclama- tion recommended a continuance of the GCES. Each agency was directed to develop specific study plans and objectives . January 30, 1986 National Academy of Science, Water Science and Technology Board asked to review the technical merit of the Glen Canyon Environmental Studies. ~ " .,-;' .. ,.. ~ , .4 ;t.-x ;"".: ~),; '.~: ~: " . . I