Corps Finalizes $6.5B Morganza Levee Decision

The Record of Decision for the 98-mile Morganza to the Gulf levee system in coastal Louisiana was posted in the Federal Register.

Updated on Nov. 13, 2026 in Environmental

Corps Finalizes $6.5B Morganza Levee Decision

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The New Orleans Engineer District posted the final Record of Decision for the Morganza to the Gulf levee system in the Federal Register on November 2, 2026, after the Mississippi Valley Division commander signed it on October 14, 2026. The Final Supplemental Environmental Impact Statement was closed alongside the decision.

Why it matters

The $6.5 billion project is designed to guard roughly 200,000 people and 52,000 structures in Terrebonne and Lafourche parishes against severe storm surge, a risk that grows as wetland loss and sea level rise increase. The decision will directly affect levee insurance coverage and operational planning in the region.

The final decision is a $6.5 billion, 98-mile levee system protecting roughly 200,000 people and 52,000 structures in Terrebonne and Lafourche parishes. Remaining segment completion dates and the full funding timeline were not detailed in the available record.

The players

U.S. Army Corps of Engineers

The federal agency responsible for designing, building and maintaining major flood-control and navigation infrastructure across the United States, including Gulf Coast levee systems.

New Orleans Engineer District

The Army Corps of Engineers district office in New Orleans that manages flood protection projects across southeastern Louisiana and posted the final decision.

The details

Construction is already underway on key segments, and new designs account for future flood scenarios. The Record of Decision was signed by the Mississippi Valley Division commander and posted by the New Orleans Engineer District, closing the Final Supplemental Environmental Impact Statement alongside it.

October 14, 2026: Mississippi Valley Division commander signs the Record of Decision.
November 2, 2026: Final Record of Decision is posted in the Federal Register.

Seasonal Patterns

The Morganza to the Gulf project traces back to the federal hurricane protection authorizations that followed the 2005 and 2008 Gulf storms. This final decision advances that program into its construction phase along Louisiana's eroding coast.

Residents of Terrebonne and Lafourche parishes should watch for construction notices on levee segments near their communities. Homeowners and businesses in protected areas may see changes to levee insurance coverage as the decision takes effect.

The takeaway

Coastal flood protection in Louisiana is increasingly built around future storm and sea-level scenarios rather than past conditions. Residents in protected parishes should track construction and insurance changes as the project moves forward.