Chapter
Dec 31, 2015

Interaction of the Colorado River Project, Texas, with Longshore Sediment Transport

Publication: Coastal Engineering 1996

Abstract

In 1985, a weir jetty system was constructed at the mouth of the Colorado River, Texas, and river discharge was diverted from this mouth in 1992. An evaluation of project impacts on longshore sediment transport was performed to determine the effectiveness of the project at preserving an open, navigable channel while preventing excessive erosion along adjacent beaches. This evaluation included both physical and numerical analysis of pre- and post-project conditions at the Colorado River mouth. Analysis of site data revealed that under the dredging and mechanical bypassing schedule followed during the first 8 years after jetty construction, the project resulted in significant trapping and sorting of sediment transported alongshore. Numerical modeling of the design maintenance dredging plan confirmed the plan to be sufficient for achieving project objectives. However, the entrance channel has continued to shoal considerably more rapidly than was anticipated during the project design.

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Go to Coastal Engineering 1996
Coastal Engineering 1996
Pages: 3309 - 3322

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Published online: Dec 31, 2015

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Daniel J. Heilman, M.ASCE
Research Scientist, Conrad Blucher Instit. for Surveying and Science, Texas A&M Univ.-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412. Formerly M.S. student, Ocean Eng. Program, Dept. of Civil Eng., Texas A&M Univ., College Station, TX 77843.
Billy L. Edge, M.ASCE
Head, Ocean Eng. Program, Dept. of Civil Eng., Texas A&M Univ., College Station, TX 77843.

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