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| Bendway Weir History, Theory, and Design
 | | Bendway Weir Model Observation. | |
|  | | Bendway Model With Weirs (Flow is parallel to the outer bank). | | Enlarge: 420x293(56kb) | |
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The Bendway Weir concept was first conceived in January 1988 by Mr. Thomas J. Pokrefke Jr. at the U.S. Army Engineer Waterways Experiment Station for use in a physical movable-bed model of a 32 km (20 mile) reach of the middle Mississippi River (Derrick, et. al 1994). The model was built in response to a number of severe bendway environmental and navigation problems, including: excessive maintenance dredging costs, constricted navigation channel, high velocities, detrimental high-flow current patterns, inadequate navigation channel widths in the crossing downstream of the bend, and the need to preserve Least Tern (Federally protected seabird) nesting areas. A modified version of Mr. Pokrefke's first plan was used to construct the first two sets of weirs in two bends of the Mississippi River.
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Coastal and Hydraulics Laboratory - Engineer Research and Development Center
Waterways Experiment Station - Vicksburg, Mississippi
Web Master
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