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United States Department of Agriculture

Agricultural Research Service

Research Project: Improved Fluvial Streambank Erosion Algorithms for the Concepts Channel Evoluation Computer Model

Location: Watershed Physical Processes Research Unit

Project Number: 6408-13000-023-20
Project Type: Nonfunded Cooperative Agreement

Start Date: Nov 01, 2009
End Date: Sep 30, 2012

Objective:
1) Develop enhanced fluvial bank erosion formulations and algorithms for the ARS CONCEPTS channel evolution computer model that incorporate the role of secondary currents and turbulence. 2) Improve the resistance-to-erosion formulation used to quantify the rate of erosion of cohesive bank materials. 3) Evaluate the improved algorithms using fluvial bank erosion measurements in the Clear Creek watershed, Iowa.

Approach:
Improved understanding of fluvial streambank erosion mechanics will be developed from ongoing studies along two sites on the Clear Creek watershed, Iowa. At the two sites data are continuously collected that comprise both driving and resisting forces, such as bank topography, bank erosion rate, flow field, and boundary material properties. These data will be used to determine a relationship between fluvial bank erosion rate and those factors controlling bank erosion, which will then be incorporated into the CONCEPTS streambank erosion algorithms. The enhanced fluvial streambank erosion algorithm will be utilized in sediment source assessments.

Last Modified: 4/21/2014
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