Posted on December 8, 2025
NEW ORLEANS — The U.S. Army Corps of Engineers is requesting public comments for mitigation and construction of the Morganza to the Gulf levee system in Terrebonne and Lafourche Parishes, Louisiana (MTG Project).
A draft Supplemental Environmental Impact Statement (SEIS) titled “Morganza to the Gulf, Louisiana Hurricane and Storm Damage Risk Reduction Project” and appendices, prepared by the U.S. Army Corps of Engineers, New Orleans District, is available for public review and comment for 45 days from December 5, 2025, to January 23, 2026. The document provides an assessment of potential impacts associated with implementing the proposed action.
The purpose of the proposed action is to reduce the risk of damage caused by hurricane storm surges. The draft SEIS evaluates proposed design changes to the authorized MTG Project.
These proposed design changes include consideration of existing local levee alignments and minimizing impacts to sensitive habitats while meeting the one percent Annual Exceedance Probability (AEP) Storm Surge Risk Reduction (100-year level of risk reduction). These proposed design changes also include alteration of levee design and heights, and environmental control structure design changes.
The proposed action involves construction of an 86-mile alignment of earthen levees, floodgates, environmental water control structures, road/railroad gates, and fronting protection for existing pump stations. The proposed action also addresses obtaining borrow, habitat mitigation, and has a more in depth induced flooding analysis than was available in the 2013 Post Authorization Change Report/Revised Programmatic Environmental Impact Statement.
This draft SEIS supplements the 2013 Final Post Authorization Change Report/Revised Programmatic Environmental Impact Statement approved in the Chief’s Report signed on July 8, 2013.
Public meetings will be held during the public review and comment period. A subsequent press release will be issued once meeting details are finalized.
All comments received by the end of the public comment period will be considered in finalizing this SEIS. Public comments received, and responses, will be included in the final SEIS. Comments should be mailed to the attention of:
U.S. Army Corps of Engineers, Regional Planning and Environment Division, South
New Orleans Environmental Branch, CEMVN PDS
7400 Leake Avenue, New Orleans, Louisiana 70118
Comments and questions may also be provided by email to: mvnenvironmental@usace.army.mil
An electronic copy of the report and its appendices are located on the CEMVN District web page at: https://www.mvn.usace.army.mil/About/Projects/Morganza-to-the-Gulf/Documents/
