
FY 2026 STATUS Engineering & Design
Funding Source(s) FederalState
Estimated Cost $5.9 billion
The St. Tammany Flood Risk Management Project is a massive undertaking designed to significantly reduce flood risks for residents of St. Tammany Parish, Louisiana. This project, authorized by the recent Water Resources Development Act of 2024 (WRDA), is the largest project authorized in the entire bill with Congress authorizing over $5.9 billion to the St. Tammany Flood Risk Management Project, and 65 percent will be covered by federal sponsors.
This project will involve a multi-faceted approach that includes the construction of levees, floodwalls, storm surge barriers, and improved drainage systems. The most significant part of the project, however, is the planned protection for over 26,000 structures, primarily residences, from the devastating impacts of floods through non-structural measures such as elevations and fortifications. The goal is to create more resilient communities along the north shore of Lake Pontchartrain that can better withstand the impacts of storm surge and other severe weather events.
This project is a major win for Louisiana and a significant step forward in protecting the lives and livelihoods in St. Tammany Parish. It represents Congress’ commitment to a sustainable Louisiana and will allow future investments in Louisiana’s Northshore.