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<br />, <br />, <br />, <br />, <br />l <br />. <br />t <br />I <br />I <br />t <br />I <br />, <br />I <br />, <br />I <br />I <br />I <br />I <br />I <br /> <br />. Evaluate the effects of the flows and sediment movement on the morphometric and bed <br />material characteristics of the Green River by conducting repeat cross-section surveys at <br />several key points along the system. <br /> <br />3.3 End Products <br /> <br />To document the results of the program on an ongoing basis, an annual report will be prepared <br />that compiles the sediment and morphometric information and contains an evaluation that can be <br />used to assist with management decision associated with flow releases from Flaming Gorge Dam, <br />and other upstream water deve'lopment and land use issues. After the first 3 years of the <br />program, the data and a detailed evaluation of the results should be formally published to insure <br />that the information is readily available to resource managers, decision makers, and scientists with <br />an interest in the Yampa and Green River system. A USGS Water-Resource Investigations <br />Report may be an appropriate forum for such a publication. <br /> <br />3.4 Study Method/Approach <br /> <br />The project objectives will be met by performing suspended-sediment and bed-load <br />measurements, bed material sampling, and cross-section surveys at several strategically selected <br />locations along the Yampa and Green River systems. The sampling and survey locations are <br />described in the following section, and have been selected to take maximum advantage of historic <br />and ongoing data collection efforts and to provide data at locations that are believed to be <br />important to the habitat requirements of the endangered fishes. The sediment sampling and <br />cross-section surveys will be conducted by experienced personnel using standard U.S. Geological <br />Survey techniques. <br /> <br />3.5 Task Description and Schedule <br /> <br />The following specific tasks well be performed to accomplish the goals and objectives of the <br />program: <br /> <br />1, An ongoing bed-load and bed-material sampling program will be established at the <br />Deerlodge Pari< gage on the Yampa River, to supplement the already established program <br />of suspended sediment measurements that is being conducted by the U.S. Geological <br />Survey, in cooperation with the Recovery Program and Colorado River Water Conservation <br />District, Nine (9) samples of each parameter will be collected per year. <br /> <br />2, An ongoing suspended-sediment and bed-load measuring program and bed-material <br />sampling program will be established at an appropriate site on the Yampa River between <br />the Little Snake River confluence and the mouth of Cross Mountain Canyon. These <br />parameters will also be sampled nine (9) times per year. <br /> <br />3. An ongoing sediment-load measuring program, inCluding both suspended- and bed- load, <br />and a bed-material sampling program will be re-established at the Jensen gage on the <br />Green River. Twenty (20) samples of each parameter will be collected per year. <br /> <br />4, An ongoing suspended-sediment load measuring program will be re-established at the <br />Green River, Utah, gage on the Green River. This program will consist of 120 observer <br />(box) suspended sediment and 9 total cross-section samples per year. Ninety (90) of the <br />box samples and all 9 of the cross-section samples will be analyzed to determine the <br /> <br />4 <br /> <br />Mussetter Engineering, lnc, <br />