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United States Department of Agriculture

Agricultural Research Service

Research Project: Stream Channel Restoration in the Illinois River and Eucha/Spavinaw Watersheds to Protect Water Supply Reservoirs

Location: Watershed Physical Processes Research Unit

Project Number: 6408-13000-023-16
Project Type: Nonfunded Cooperative Agreement

Start Date: Aug 17, 2011
End Date: Aug 16, 2012

Objective:
Develop a prioritization scheme to evaluate sites for potential future restoration in the Eucha/Spavinaw and Illinois River Watersheds in northeastern Oklahoma based on current state of streambed degradation, likelihood of long-term bank stability, ecosystem services preserved or created, and potential sediment load reduction.

Approach:
This work will be conducted jointly with USDA-ARS and Oklahoma State University. Site-specific predictions of future streambank erosion and channel migration will be otained from simulations with the CONCEPTS model. Estimates streambank instability along other reaches will be extrapolated from the modeling results by relating the numerical results to indices of relative channel stability as determined through rapid geomorphic assessments (RGAs) covering approximately 150 miles of river chananels. Detailed data collection to quantify the resistance of the channel boundaries to hydraulic and geotechnical forces will be conducted at 48 sites. These data will be used to populate the CONCEPTS model. Sites for detailed data collection and CONCEPTS modeling will be selected in concert with cooperative researchers at Oklahoma State University and USDA-ARS. Another aspect of the project will be the application of the RVR Meander model to selected streams within the Illinois River and Spavinaw Creek watersheds, Oklahoma, in order to assess their susceptibility to streambank erosion and lateral migration. The outcome will assist in the prioritization and design guidance of streambank stabilization measures, and the selection of sites to be modeled with the CONCEPTS model.

Last Modified: 9/10/2014
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