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grained (sand and finer) deposits, linkages with physical habitats and relationships to non- physical resources and processes offer insight on the effectiveness of the Secretary's 1996 Record-of-Decision (ROD), relative to management objectives. Annual-to-biennial monitoring of fine-grained sediment storage provides information: (I) on the status of near-shore aquatic and terrestrial habitats where vegetation and associated fauna, socio-cultural resources are of management concern; (2) on the availability of fine- grained sediment that can be periodically manipulated through controlled /loods to preserve and sustain downstream resources dependent on fine sediment; (3) on identification and interpretation of linkages between dam operations and changes in physical habitats and related ecosystem resources. All three areas of information support science-based evaluations of large- scale /low experiments (e.g., the Secretary's actions), and associated decision responses required for adaptive management to succeed. Summary Project Description: Fine-grained deposits (sand and finer) of the main channel constitute a major storage component of the Colorado River ecosystem's sediment budget. Glen Canyon Dam operations in/luencc finc deposits in ways that affect aquatic and terrestrial habitats over both short and long periods. The emphasis of this long-term monitoring project is to document system-wide changes in fine-grained deposits relative to dam operations and natural inputs, with emphasis on key storage settings within critical reaches. This project was initiated through release ofa competitive solicitation in October 2000. The first phase of this project was scheduled for completion at the end of FY 2005, but has been extended through FY 2006 owing to the additional field data collection campaign around the November high-/low test, and will be externally reviewed through the PEP process. In addition, the project is also focused on researching the fate of campsite areas on an annual basis, as well as the fate of sand bars reworked by wind in the vicinity of archeological preservation sites. Two other subcomponents of this project include monitoring sediment deposition in arroyos near archaeological sites and monitoring changes at campable beach areas owing to experimental high /lows. These projects are described in the Two-Year Science Plan for Experimental Flow Trea/mellls and Mechanical Removal Activities in WY'S 2002-2004. MO's and IN's ADDRESSED: Goal 8, MO's 8.1, 8.2. 8.3,8.4, and 8.5; CMIN's 8.\.1, 8.2.1, 8.3.1, 8.4.1, 8.5. \. GCMRC FY2006 Annual Work Plan (Draft, June 10,2005) 29 ~ i. 1 .