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Title: Red River Waterway, Lock and Dam 3. Report 3, Sedimentation conditions hydraulic model investigation
Authors: United States. Army. Corps of Engineers. Vicksburg District
United States. Army. Corps of Engineers. New Orleans District
McCollum, Randy A.
Keywords: Dams
Navigation lock and dams
Red River, Louisiana
Hydraulic models
Movable-bed model
Sediment transport
Red River Waterway
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; HL-91-10 rept. 3.
Description: Technical Report
Abstract: Lock and Dam 3, located in a cutoff channel between river miles 140.0 and 142.2 of the Red River, is designed to maintain a normal pool of el 95 (elevations (el) are given in feet referred to the National Geodetic Vertical Darum) upstream to Lock and Dam 4. The design calls for an 84-ft by 685-ft usable lock chamber and a dam with six 60-ft-wide gates. A movable-bed model study was performed to determine the alignment of the channel and the arrangement of the lock and dam that would provide the most satisfactory channel for both navigation and sediment movement. The movable-bed model was built to a scale of 1:120 horizontally and 1:80 vertically and reproduced the study area from river miles 143.3 to 138.9. The moveable bed was molded using crushed coal with a median grain size of 4 mm and a specific gravity of 1.30. The original design for the lock and dam (Plan A) would not maintain an adequate navigation channel downstrearn of the dam. Modifications made for Plans B through F also would not provide an adequate navigation channel in the lower pool. Plan G, which used modifications developed in the fixed-bed navigation model for Plans I-3 in the upper pool and H-5 in the lower pool, maintained the navigation channel in the upper and lower pools using the average water year hydrograph. Operation of the 1958 high water year hydrograph produced shoaling in the lower pool that would impede navigation: but an average water year hydrograph performed immediately after the high water hydrograph gradually improved the shoaled areas in the lower pool.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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