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Environmental Programs Upper Basin Although excellent lrouttallwater fisheries were created through the construction and operation of the Upper BasIn dams and reservoIrs, the cold, clear water also changed habitat for several rare native fish !" the Green, Colorado, and San Juan Rivers. In order to evaluate the Impacts of reservoir operation on the native "sh, a Colorado River Fishery Project was Initiated. Over the last 3 years, many State and Federal wildlife resource agencies, along with ReclamatIon, partlclpatad In the Joint study effort. In April 19B2, a three-volume fInal report was cooperatively prepared and released by Reclamation and the Fish snd Wildlife SeMee (FWS), Findings of tha study Included the abundance and distribution of endangered Colorado squawflsh, humpback chub, end bony tall chub In the Upper Basin. Monitoring at fish movements, reproduction, a.nd population stability was also conducted. Recommendations on appropriate flows to help preserve the fish In their natural habitat were also made. Additional monitoring will continue on the rare fish to Insure continued compatibility between the exotic and native Hsh In the Upper Colorado River system and future development and usa of the water resources of the Upper Basin States. 26 In water year 1983, Reclamation, In cooperation with the National Park Service (NPS) and other non-Federal agencle., will Initiate studies In the Grend Canyon, The purpose of these studies Is to better quantify the Impacts of the current operation of Glen Canyon Powerplant. They will concentrate on sedimentation end the biology of the Colorado River and its shoreline In the Grand Canyon; analyze the effects of the current operation of Glen Canyon Powerplant; and address various alternatives to the present operations. Lower B8s'n Hoover Dam Is Internationally recognized for Its engineering and architectural desIgn a8 well as Its tar reaching socIal and economic Impacts, Therefore, it Is listed on the National Register of Historic Pieces. Regulations of the AdvIsory CouncIl on Historic Preservation (Council) require that Federal agencies consult with both the appropriate State Historic Preservation OffIcer (SHPOland the CouncllltseJt when a National Register property may be affected by an agency action, Because of this, under normal circumstances the ArIzona and Nevada SHPO's would ba consulted for even routine maintenance and operation of Hoover Dam. In order to eliminate the'repetltlve and time consuming process of consulting with the SHPO's, a Programatlc Memorandum of Agreement for 'I 1 I I 1 1 maintenance and operation of the Dam Is being negotiated with the Arizona and Nevad' SHPO's and the Council. As provided for In Council regulations, the agreement will allow for a one time consultation to cover ongoing operation and maIntenance at the Dam. The agreement will make It possible for Reclematlon to fulfill both the "spirit and the letter of the law" In preserving the signIfIcant historic Qualities of Hoover Dam. The Central Arizona Project (CAP) will be one at the largest and most complex proJects that Reclamation has ever constructed, The cultural resources, both historical and archeological, affected by the project are correspondlngly rich and complex. The nearly 400 miles of aqueduct that will transport Colorado River water to users In central Arizona. and the associated storage and regulatory features, will affect hundreds of archeological and historical sites. Reclamat\on already has an extensive sur....ey and mitigation program In progress to fulfill Its responsibilities for the preservation and management of these cultural resources. In order to unify the cultural resource program for the entIre CAP, Reclamation's Preservation Officer Is preparing a Cultural Resource overview. The overview will summarize the results of the work already accomplished. Because the location for many