Use of a Two-Dimensional Flow Model to Quantify Aquatic Habitat

by D. Michael Gee, US Army Corps of Engineers, Computer, Support Cent, Davis, CA, USA,
Daniel B. Wilcox, US Army Corps of Engineers, Computer, Support Cent, Davis, CA, USA,



Document Type: Proceeding Paper

Part of: Computer Applications in Water Resources

Abstract: This paper describes the use of a numerical two-dimensional flow model to evaluate the impacts of potential hydropower retrofits on downstream flow distributions at Lock and Dam No. 8 on the upper Mississippi River. The model used (RMA-2) solves the complete Reynolds equations for two-dimensional free-surface flow in the horizontal plane using a finite element solution scheme. RMA-2 has been in continuing use and development at the Hydrologic Engineering Center and elsewhere for the past decade. Calibration of the numerical model to field measurements of velocity magnitude and direction is also described.

Subject Headings: Two-dimensional flow | Two-dimensional models | Aquatic habitats | Numerical models | Hydrologic models | Flow distribution | Rivers and streams | River flow | Potential flow | Mississippi River

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