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Rates and patterns of net sedimentation in backwaters of Pools 4, 8, and 13 of the Upper Mississippi River


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Net sedimentation rates were obtained for backwaters of the Upper Mississippi River in Pools 4, 8, and 13 by measuring annual bed elevation changes along transects between 1997 and 2001. Average sedimentation rates (cmּyr�1) during the 5-yr period were lower than most previously reported rates in backwaters of the River, with means of –0.08 (standard error [SE] = 0.18) in Pool 4, 0.21 (SE = 0.10) in Pool 8, and 0.47 (SE = 0.26) in Pool 13.�Poolwide estimated mean sedimentation rates in the terrestrial areas adjacent to backwaters appeared higher, ranging from 0.32 (SE = 0.14) to 0.78 (SE = 0.25) cmּyr�1, but were not significantly different than rates in aquatic areas.�When averaged over the study period, sedimentation rates were correlated [...]


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  • Upper Midwest Environmental Sciences Center (UMESC)



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U.S. Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin

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