Red River Waterway, Lock and Dam No. 4. Report 2: Navigation Alignment Conditions, Hydraulic Model Investigation
Red River Waterway, Lock and Dam No. 4. Report 2: Navigation Alignment Conditions, Hydraulic Model Investigation

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Published: 1997

Total Pages: 134

ISBN-13:

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Lock and Dam No. 4 is the fourth lock in a series of five to be constructed on the Red River Waterway from the vicinity of Old River to Shreveport, LA. Lock 4 is located in a cutoff canal on the left descending bank about 169 post project river miles above the mouth of the Red River. The principal structures include an 84- by 785-ft lock, a gated spillway containing five tainter gates, and a hinged crest gate 100 ft wide. The fixed bed model reproduced about 3.5 miles of realigned river channel and adjacent overbank area at an undistorted model scale of 1:100. The model investigation was concerned with determining the effects on navigation through the study reach for the proposed design and developing modifications required to the design that would provide satisfactory navigation conditions.

Red River Waterway, Lock and Dam Number 4. Report 3. Sedimentation Conditions. Hydraulic Model Study
Red River Waterway, Lock and Dam Number 4. Report 3. Sedimentation Conditions. Hydraulic Model Study

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Publisher:

Published: 1992

Total Pages: 85

ISBN-13:

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A movable-bed physical model was used to investigate and solve potential channel development and maintenance problems associated with Lock and Dam No. 4 on the Red River in Louisiana. The model reproduced the Red River from 1967 river mile 213.1 to 204.7 using a distorted scale of 1:120 horizontally and 1:80 vertically. The model was adjusted to reproduce prototype conditions before the inclusion of the proposed project. The upstream approach to Lock and Dam No. 4 will include a short-radius man-made cutoff through the neck of the existing bend, shortening the length of the existing bendway by approximately 1 mile. The lock and dam will also be located in an excavated channel, cutting off about 3 miles of an existing bendway. Procedures were developed to properly model channel modifications that significantly shorten the channel length. Various configurations of dikes and berms were evaluated to determine the optimum configuration for maintaining a satisfactory navigation channel. Hydraulic models, Red River, Navigation channels, River training structures, Navigation locks and dams, Sedimentation.