Cumulative Impacts Analysis on a Midwest Fluvial Systemby J. Craig Fischenich, USAED, Omaha, United States,
Abstract: The US Army Corps of Engineers recently completed an analysis of the cumulative impacts of erosion control structures on the Platte River in Nebraska. This was done in response to concerns about the effects of bank stabilization activities upon threatened and endangered species that use the Platte River. Physical changes to the river generated by existing and proposed bank stabilization activities were evaluated to determine the environmental significance of various bank stabilization structures. HEC-6, a one-dimensional sediment transport model, was used to quantify cumulative impacts from bank stabilization activities for the entire river. TABS-2, a two-dimensional sediment transport model, was used to quantify local impacts from a variety of structures.
Subject Headings: River bank stabilization | Sediment transport | System analysis | Hydrologic models | Water supply systems | Hydraulic models | Two-dimensional models | Structural stability | Mid-West states | Nebraska | North America | United States
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