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United States Department of Agriculture

Agricultural Research Service

Research Project: ENHANCEMENT OF THE CHANNEL EVOLUTION MODEL CONCEPTS FOR PREDICTING LATERAL CHANNEL MIGRATION

Location: Watershed Physical Processes Research Unit

Project Number: 6408-13000-023-04
Project Type: Specific Cooperative Agreement

Start Date: Mar 01, 2008
End Date: Feb 28, 2013

Objective:
The objective of this cooperative research is to develop computer model components, which can be coupled to CONCEPTS, for predicting the onset and continual development of river meandering.

Approach:
A linear model of the flow in the interior of sinous streams will be enhanced to include: (1) the near-bank domain, (2) transport of graded sediments, and (3) the formation of alternate bars and point bars including simulation of changes in transverse bed profile. The stresses exerted by the flow on the streambank as simulated by the above model will be used by the process-based streambank erosion algorithms of the channel evolution model CONCEPTS to predict streambank erosion and to adjust bank profiles. The predictive capabilities of the resulting model regarding hydraulics, non-uniform sediment transport, streambank erosion, and channel migration will be validated on selected laboratory experiments, field data of single bends of sand- and gravel-bed streams, and selected multiple-bend streams segments of Tahoe Basin streams.

Last Modified: 9/21/2014
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