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() \- \;j'\j'" 7 science programs, The reorganization is expected to increase the effectiveness of GCMRC, particularly as it relates to the conduct of integrated, or ecosystem science. Details of the reorganization will be provided to TWG and AMWG members at the November 2003 and January 2004 meetings, The new program numbering system, on the Project Summary Sheets that follow, reflect the reorganization. INTEGRATED SCIENCE PROGRAM t The Integrated Science Program (ISP) represents the GCMRC's new initiative in FY 2005- 06, and beyond, for achieving science integration between physical, biological and socio-cultural elements of the monitoring and research program, Under the new organizational approach, integrated analysis of data on the Colorado River ecosystem is driven by team-based initiatives aimed at acquiring resource data, with integrated objectives for analysis clearly identified prior to data acquisition, Following data acquisition and storage, integrated analyses are possible in relatively short timelines owing to the functionality of the GCMRC's state-of-the-art Oracle relational data engine. Through a combination of technological advances in database and positioning methods, as well as a new organizational structure, barriers that have hindered past integration efforts are eliminated in the ISP, Following, are descriptions and updates on current knowledge related to the individual elements of the ISP, Intel!rated Quality-or-Water Prol!ram UDstream ComDonent Lake Powell Owing to prolonged drought conditions in the Colorado River Basin, Lake Powell has been drawn down to its lowest surface elevation since 1973, At an elevation of 3603,73 feet above mean sea level the reservoir was at about 50% of its total capacity, Also associated with the reservoir drawdown was an increased release temperatures through the summer of2003 as the warmer surface layers of the reservoir were brought closer to the penstock withdrawal elevation, Release temperatures reached 12 deg C in September 2003, the warmest temperatures observed tor that time of year since 1973, Dissolved oxygen levels were at very low levels throughout the reservoir in September 2003 owing to resuspension of deltaic sediments, These conditions were reported at the October 2003 Colorado Ecosystem Science Symposium in Tucson, AZ, The GCMRC long-term monitoring program for Lake Powell continues, with monthly forebay and quarterly reservoir surveys. These surveys consist of the collection ofa profile of GCMRC FY2005-2006 Draft Annual Work Plan (November 10, 2003)