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. ( ./ Ie \ / e 00506 28 Project A.3. Completion of Research & Development in Support of Monitoring Changes in Fine-Sediment Storage along the Main Channel & Shorelines of the eRE FUNDING Fiscal year HISTORY 2002 2003 2004 2005 2006 Outside GCMRC Science/Labor 300,000 300,000 621,000 760,000 256,250 Logistics Field SUDDort 58,000 18,000 120,000 120,000 0 Project Related TravellTraining - - - - 0 Operations/Supplies 100,000 93,000 63,000 60,000 0 GCMRC Salaries 53,000 31,000 56,000 60,000 0 Proiect Subtotal - - - - 256,250 DOl Customer Burden (6%) - - - - 15,375 Project Total 511 ,000 442,000 860,000* 1,000,000* 271 ,625 % Total Outsourced -68% -71% -79% -87% 100% *Thc FY 2004 & 2005 project totals include extra data acquisition costs for monitoring elTects of experimental Fluctuating Flow & the sediment High.Flow test irnple~ented in November 2004. The FY 2006 costs are (0 support final reporting on the 2001- 2005, monitoring and research related to the High-Flow test. Principal Investigators: Rubin, Topping, Schnlidt and Parnell, U.S. Geological Survey (WRD, GO & BRD, plus Utah State and Northern Arizona Universities) Statement of Problem: Sandbars and other sandy deposits in and along the Colorado River in Grand Canyon National Park (GCNP) were an integral part of the pre-dam riverscape, and are important for habitat, protecting archeological sites, and recreation. These deposits have eroded substantially following the 1963 closure of Glen Canyon Dam that reduced the supply of sand at the upstream boundary of GCNP by about 94%; sandbars in Marble Canyon have decreased in size by about 25% during the last 15 years. Results from the geomorphic synthesis project have shown that the deeper portions of eddies and the channel pools also contain about 25% less sand, silt, and clay than they contained in the early 1990s. Relationships between Glen Canyon Dam operations, fine-sediments input from gaged and ungaged tributaries below the dam, and interrelated downstream biological, socio-cultural resources are of primary management concern. This is true owing to the fact that sand bars are the primary substrate along many shoreline areas of the ecosystem. Monitoring data on fine- GCMRC FY2006 Annual Work Plan (Drafl,June 10,2005)