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<br />0[)2161 <br /> <br />19 <br /> <br />Information needs specified by stakeholders are explicitly linked to stakeholder <br /> <br />objectives. Generally, as new objectives are specified, they result in a new set of information <br /> <br />needs. In FY 98 (Spring 1998), new management objectives may be defmed by the TWG and <br /> <br />approved by the AMWG, which will also require specification and approval of new information <br /> <br />needs. Objectives and information needs will be specified for the Lake Powell program at that <br /> <br />time. All new objectives and information needs will be used to define the FY 2000 program. <br /> <br />Current Information Needs include: <br /> <br />Water Resources <br /> <br />1. Monitor changes in water quality (physical and chemical characteristics such as <br />temperature, salinity, nutrients, trace elements, etc.) over time and space. <br /> <br />2. Monitor concentrations of chemical constituents relative to historical levels, and with <br />respect to identified Colorado River ecosystem requirements, and relative to <br />established EP A/state and tribal standards. <br /> <br />3. Monitor water temperature changes throughout the Colorado River ecosystem over <br />time and space with respect to influences of dam operations. <br /> <br />Sediment Resource <br /> <br />1. Monitor fme-grained sediment deposits, including pre-dam river terraces, active <br />sandbars used by recreationists as camping areas, and aquatic habitats related to <br />return-current backwater channels. <br /> <br />2. Monitor changes in backwater habitats relative to dam operations under the Record of <br />Decision (ROD). <br /> <br />3. Define character and structure of pre-dam river terraces associated with cultural <br />resources, and all other fme-grained sediment deposits, including camping beaches <br />and backwater habitats found throughout the Colorado River ecosystem immediately <br />following the 1996 test flow. <br /> <br />4. Defme historical and current (character and structure) levels of channel-stored <br />sediment throughout the Colorado River ecosystem and associated dam operations. <br /> <br />Final Draft - (12/15/97) For AMWG Review <br />