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<br />002454 <br /> <br />2 <br /> <br />Group accepted a proposal by the GCMRC to conduct a six-month assessment of Lake Powell <br />long-term water quality data to determine if dam operations under the ROD exhibited any <br />impact on the physical, chemical, and biological resources of Lake Powell. The Transition <br />Work Group reviewed and approved ihe GCMRC proposal to conduct the evaluation. <br />A draft of the Lake Powell impact assessment was completed and externally reviewed <br />by leading limnologists for validation. The findings were presented to the Adaptive <br />Management Work Group (AMWG) at its first meeting on September 9-10, 1997. The report <br />[mdings and limnologists' review determined that dam operations specified under the ROD did <br />produce impacts to the physical, chemical and biotic resources in Lake Powell. <br />Based upon the GCMRC's [mdings of resource impacts to Lake Powell resulting from <br />operations of Glen Canyon Dam, the AMWG requested the GCMRC to: <br />1. Continue the current GCMRC monitoring program for the period of October <br />1997 to October 1998. <br /> <br />2. Conduct additional assessments of existing data relating to Lake Powell and <br />release water quality, including analyses of chemical and biological data that <br />were not performed due to time and monetary constraints. <br /> <br />3. Review with the Technical Work Group, in January 1998, all existing <br />knowledge related to the effects of Glen Canyon Dam operations on the water <br />quality in Lake Powell and downstream releases. <br /> <br />4. Develop, with the Technical Work Group, objectives and information needs for <br />any future Lake Powell water quality monitoring and research programs. This <br />activity would occur in January to March 1998. <br /> <br />5. Develop for the Adaptive Management Work Group and Technical Work Group <br />approval, a proposed monitoring and research plan for any specified future Lake <br />Powell water quality monitoring programs. The draft plan would be produced <br />by June 1, 1998. <br /> <br />The GCMRC has in coordination with the TWG completed all of the above activities as <br />requested by the AMWG. Monitoring and research activities of the GCMRC beyond October <br />1, 1998 (FY 1999) is based on the approved FY 1999 Monitoring and Research Plan and <br />AMWG review and approval of this long-term Lake Powell Water Quality Monitoring and <br /> <br />DRAFT - June 17, 1998 <br />