Lower Mississippi River (LMR) Dredging Update 121619
The Corps of Engineers Mississippi Valley New Orleans (MVN) has now completed dredging operations on the Mississippi River Ship Channel in response to the Great Flood of 2019. The MVN released the last two dustpan dredges from their assignments on the Crossings Above New Orleans yesterday (Sunday, December 15, 2019). The MVN has awarded Southwest Pass Cutterhead Dredge Rental Contract #3-2019 to Weeks Marine and a cutterhead dredge is expected to start dredging in Southwest Pass by mid-January 2020.
DUSTPAN DREDGE(S) ON THE CROSSINGS ABOVE NEW ORLEANS:
WALLCE McGEORGE: The industry dustpan dredge WALLCE McGEORGE completed dredging full channel dimensions (500 feet by 45 feet) at Baton Rouge Front (Mile 231.5 Above Head of Passes [AHP]). The industry dustpan dredged on the Crossings from May 9, 2019 to December 15, 2019 and has been released to the Corps Memphis District.
JADWIN: The Corps dustpan dredge has completed dredging full channel dimensions at Red Eye Crossing (Mile 224 AHP). The government dustpan dredged on the Crossings from June 27, 2019 to December 15, 2019 and has been released to the Corps Vicksburg District.
HURLEY: The Corps dustpan dredge HURLEY completed dredging operations on the Crossings. The dustpan worked on the Crossings from May 4, 2019 to December 4, 2019 before being released to the Memphis District.
CUTTERHEAD DREDGE(S) IN THE HOPPER DREDGE DISPOSAL AREA (HDDA):
J.S. CHATRY: The J.S. CHATRY continues dredging on the HDDA contract, all material is being beneficially used in the Pass A Loutre Wildlife Management Area (PALWMA). Supplement funding was utilized to allow the MVN to extend this contract from 12 million cubic yards (mcy) to 15.075 mcy of material to be removed from the HDDA. The cutterhead dredges have now beneficially utilized approximately 12 mcy of material from the HDDA and restored roughly 960 acres. When this project is completed in early 2020, approximately 1,200 acres will have been recreated in the PALWMA.
The Carrollton Gauge (New Orleans) reading at 1000 hours today was 11.20 feet, with a 24-hour change of – 0.18 feet.
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.