The U.S. Army Corps of Engineers (USACE) continues channel maintenance dredging in Southwest Pass (Fiscal Year 2022). The USACE previously completed Phase 1 and Phase 2 of the historic project to deepen the Mississippi River Ship Channel Deepening (MRSC) to 50 Feet. The areas of the Ship Channel that required dredging to provide the deeper draft channel were mechanically dredged up to Smoke Bend at Mile 175 Above Head of Passes (AHP). The Associated Branch Pilots of the Port of New Orleans (Bar Pilots) increased their maximum freshwater draft to 50 feet freshwater at 1200 hours yesterday (March 16, 2022) for their route. The Crescent River Port Pilots Association (Crescent Pilots) maximum draft recommendation remains at 49 feet (freshwater) for their route, the controlling draft will remain 49 feet (freshwater) until additional adjustments are enacted. The USACE will begin dredging on the Crossings Above New Orleans when the river stages recede, estimate dredging to start in early June (2022).
HOPPER DREDGE(S) WORKING IN THE AREA OF SOUTHWEST PASS (SWP):
GLENN EDWARDS: The industry hopper dredge GLENN EDWARDS (Manson Construction) is working on assignment at the Venice Jump from approximately Mile 10.5 Above Head of Passes (AHP) to Mile 10.0 AHP. The GLENN EDWARDS is working under Southwest Pass Hopper Dredge Rental Contract #3-2020 that should be completed by early May (2022). The hopper dredge will then immediately commence work under Southwest Pass Hopper Dredge Rental Contract #2-2021 that will extend the length of the dredge’s time on the MRSC until late August (2022). The GLENN EDWARDS resumed (#3-2020) in SWP on January 13, 2022.
TERRAPIN ISLAND: The industry hopper dredge TERRAPIN ISLAND (Great Lakes Dredge & Dock) is expected to start work under Southwest Pass Hopper Dredge Rental Contract #1-2021 in early May (2022). The scheduled arrival of the industry dredge has been delayed through the cooperative and adaptive Regional USACE Contract approach based on the channel conditions in SWP (no restrictions).
WHEELER: The USACE hopper dredge WHEELER is working under Readiness Exercise #4-2022 dredging on assignment from Mile 6.5 Below Head of Passes (BHP) to Mile 10.0 BHP. The WHEELER is scheduled to complete RE #4 in SWP on May 4, 2022.
The USACE was able to award two “Early Award” contracts in Fiscal Year 2021 (FY 21) for dredging to be conducted in Fiscal Year 2022. The FY 21 contracts listed above for the TERRAPIN ISLAND and the GLENN EDWARDS are both early award contracts. The early award and regional dredging contracts allow the USACE to secure dredges for SWP in advance of shoaling with added flexibility that allows a dredge to work under contract between USACE Districts. These adjustments have proven beneficial and were implemented to reduce the negative impacts of severe shoaling that has often led to reduced maximum draft recommendations for vessels transiting Southwest Pass.
CUTTERHEAD DREDGE(S) WORKING IN SOUTHWEST PASS (SWP):
ROBERT M. WHITE: The cutterhead dredge ROBERT M. WHITE (Manson Construction) is dredging at Mile 13.06 BHP on assignment from Mile 12.2 BHP to Mile 16.0 BHP on eastern side of the Ship Channel. The USACE has exercised contract options that will extend the work under Southwest Pass Cutterhead Dredge Rental Contract #2-2020 until June (2022).
MAXIMUM DRAFT RECOMMENDATIONS PER PILOT ASSOCIATION:
Based on the channel deepening project and the continued efforts to provide surveys over pipelines in two key areas of the Ship Channel (Venice Corridor Mile 12 AHP to Mile 11 AHP and at Mile 158.2 AHP) the documentation of the present maximum draft recommendation for each Pilot Association are listed below:
Associated Branch Pilots of the Port of New Orleans (Bar Pilots): The Bar Pilots increased their maximum freshwater draft to 50 feet freshwater at 1200 hours on March 16, 2022 specific to their route.
Crescent River Port Pilots Association (CRPPA): The CPPRA raised their maximum draft recommendation to 49 feet (freshwater) on Friday, February 11, 2022. The CRPPA continue to monitor channel conditions and the latest surveys to consider adjustments to the maximum draft recommendation for their route
New Orleans Baton Rouge Steamship Pilots (NOBRA): The NOBRA raised their maximum draft to 48 feet (freshwater) from Mile 90.5 AHP to Mile 175 AHP on February 12, 2022. The maximum draft recommendation from Mile 175 to 180 remains 47 feet and from Mile 180 to Mile 233.8 it remains 45 feet.
Associated Federal Pilots and Docking Masters of Louisiana (Federal Pilots): The Federal Pilots increased their maximum draft recommendation on March 5, 2022 to the following:
49 feet from Sea Buoy to Mile 104.7 AHP;
48 feet from Mile 104.7 AHP to 175 AHP;
45 feet Mile 175 AHP to 232.4 AHP; and
40 feet Mile 232.4 AHP to 233.8 AHP.
The controlling maximum freshwater draft for the MRSC up to the Port of New Orleans is 49 feet, the maximum draft decreases to 48 feet from the Port of New Orleans to Mile 175.0 AHP (Smoke Bend) until additional adjustments are made.
MISSISSIPPI RIVER STAGE UPDATES:
The Carrollton Gage (New Orleans) reading at 0900 hours today was 11.44 feet with a 24-hour change of + 0.12 feet. The National Oceanic and Atmospheric Administration’s (NOAA) National Weather Service Extended Streamflow Prediction (28-Day) for the Carrollton Gauge issued today forecasts stages will continue a slow rise to 12.6 feet on April 29 and then begin a slow fall to 9.8 feet on May 20 (2022).
The highest crest on the Carrollton Gage in 2022 to date was 13.82 feet at 2100 hours on March 22, 2022.
The Baton Rouge Gage reading at 1000 hours was 31.81 feet with a 24-hour change of + 0.29 feet. The National Oceanic and Atmospheric Administration’s (NOAA) National Weather Service Extended Streamflow Prediction (28-Day) for the Baton Rouge Gauge issued today forecast stages will continue a slow rise to 34.2 feet on April 28 and then begin a slow fall to 26.6 feet on May 20 (2022).
