Lower Mississippi River (LMR) Dredging Update 112118

The Corps of Engineers Mississippi Valley New Orleans (MVN) is working to finalize Southwest Pass Hopper Dredge Rental Contract #6-2018 with Manson Construction.  Manson intends to respond to this contract with the hopper dredge NEWPORT, the new NEWPORT is expected to commence dredging operations in Southwest Pass next week. The industry cutterhead dredge R.S. WEEKS (Weeks Marine) continues dredging 12 million cubic yards (mcy) of material from the Hopper Dredge Disposal Area (HDDA).

INDUSTRY HOPPER DREDGE(S) IN SOUTHWEST PASS (SWP): 

NEWPORT: Manson Construction’s hopper dredge NEWPORT is expected to begin dredging in Southwest Pass by Friday, October 30, 2018 under SWP Hopper Dredge Rental Contract #6-2018.

The Carrollton Gauge reading at 1400 hours today was 12.41 feet with a 24-hour change of -0.09 feet.

The Baton Rouge Gauge reading was unavailable at the time of this notice.

The graph below is reproduced from NOAA’s National Weather Service website and represents an experimental product to account for the complexity of accurately predicting long-range precipitation.  This forecast projects stage levels based on expected precipitation for 2 days (top) and 16 days (bottom) and was developed within the North American Ensemble Forecast System (NAEFS) computer model and highlights Quantitative Precipitation Forecasts (QPF).  Along with the forecasts, a shaded area is also provided to indicate uncertainty for the forecast each day in the future.   These plots are experimental and not an official forecast product.

NORL1_67_28d_forecast_error_plot.png

CUTTERHEAD DREDGE AT THE HOPPER DREDGE DISPOSAL AREA (HDDA):

R.S. WEEKS: The industry cutterhead dredge R.S. WEEK has removed approximately 560,000 cubic yards of material from the HDDA since starting the project on November 3, 2018. The contract calls for Weeks Marine to remove 12 mcy of material from the HDDA. The material is being beneficially used in the Pass-a-Loutre Wildlife Management Area on the eastern side of the Ship Channel. The beneficial use of material removed from the HDDA is expected to restore approximately 1,000 acres of new marsh in this critical deltaic environment.