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|Title:||Cumulative erosion impacts analysis for the Missouri River master water control manual review and update study|
|Authors:||Mobile Boundary Hydraulics|
University of Nottingham
Pokrefke, Thomas J.
Abraham, David A.
Hoffman, Peggy H.
Thomas, William A.
Darby, Stephen E.
Thorne, C. R. (Colin R.)
|Publisher:||Coastal and Hydraulics Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Technical report (U.S. Army Engineer Waterways Experiment Station) ; CHL-98-7.|
This study was undertaken to assist the Missouri River Region, U.S. Army Engineer Division, Northwestern, in determining if the Current Water Control Plan (CWCP) or an alternative plan best meets the current needs of the Missouri River. Initially it was determined that streambank erosion rates would increase resulting from a change in Operation from the CWCP to the alternative identified as the Preferred Alternative (PA). These potential impacts, however, were not quantified; therefore, this study was undertaken to address the cumulative erosion impacts of changing the operation of the main stem dams and adding additional streambank erosion control measures. Also some resource agencies requested that an assessment of the effects of additional streambank erosion control be addressed. Four reaches totaling 362 miles downstream from Fort Peck (189 miles), Garrison (79 miles), Fort Randall (36 miles), and Gavins Point (58 miles) Dams were included in this evaluation. As part of a habitat evaluation effort, environmental features such as islands, sandbars, and backwater and chute habitats were analyzed. Other factors such as channel degradation, channel geometry, and turbidity were addressed to the extent possible.
|Appears in Collections:||Technical Report|