Dredging Alternatives Study, Cubits Gap, Lower Mississippi River. Report 2. TABS-2 Numerical Model Investigation. Volume 1. Main Text and Appendix A

摘要

This report presents results from the numerical model investigation. The primaryobjective of the mathematical models was to determine the best method to control shoaling in the navigation channel between Cubits Gap and Head of Passes in Louisiana. The secondary objective was to evaluate the best design configuration for a structural plan for dikes that are to be located at Cubits Gap and the ability of these designs to return the water flow distribution to its historical levels. Several plans were proposed to alleviate recurrence of these shoaling conditions. They included a sediment trap, advance maintenance, and additional training structures. The first two addressed shoaling problems in the reach between Cubits Gap and Head of Passes. The latter addressed shoaling created by sediment transport and water flow distribution in Cubits Gap.