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|Title:||Dredging alternatives study Cubits Gap, Lower Mississippi River. Report 1, TABS-1 numerical model investigation|
|Authors:||United States. Army. Corps of Engineers. New Orleans District.|
Copeland, Ronald R.
HEC-6 computer program
|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-90-20 rept. 1.|
Abstract: A numerical model study of the Mississippi River between Reserve, LA, at river mile 140.8, and East Jetty, LA, at river mile -19.6, was conducted to evaluate dredging alternatives in the Cubits Gap and Head of Passes reaches. The TABS-1 one-dimensional model was used. The model was adjusted to reported dredging quantities in Southwest Pass over a period of several years. The model was circumstantiated by reproducing dredging at Cubits Gap in 1989. An 11-year hydrograph was used to determine annual dredging requirements for existing conditions. Alternatives that included advance maintenance, a sediment trap, and flow reduction in Cubits Gap were compared to existing conditions. The advance maintenance and Cubits Gap flow reduction alternatives were determined to be the most effective in terms of the percent of time that project depth could be maintained. The flow reduction alternative provided for a significant decrease in total dredging requirements.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Technical Report|
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|TR-HL-90-20-R1.pdf||5.55 MB||Adobe PDF|