US Army Corps of Engineers
New Orleans District

Seabrook Floodgate Complex is one of the major components of the Greater New Orleans Hurricane and Storm Damage Risk Reduction System built by the U.S. Army Corps of Engineers, New Orleans District. Finished in just two years, the $150-million plus project is located at the north end of the Inner Harbor Navigation Canal just south of Lake Pontchartrain and the Senator Ted Hickey Bridge. The structure works in tandem with the IHNC-Lake Borgne Surge Barrier to reduce the risk associated with a storm surge that has a one percent chance of occurring in any given year. Most recently, it helped prevent storm surge and flooding in New Orleans during Hurricane Isaac -- as the entire system worked as designed.
Ensuring commercial shipping continues unrestricted in southeast Louisiana, the U.S. Army Corps of Engineers contracts dredges to keep navigation “lanes” open. The challenge is in keeping the river’s navigable depth and width at authorized dimensions, a yearly focus for the corps. Recent operations on the Atchafalaya River saw the dredge Alaska working the Bar Channel. The authorized dimension for the navigation project is 20ft deep and a bottom width of 400ft.
The Bonnet Carré Spillway, part of the Mississippi River and Tributaries project (MR&T) is the southernmost floodway in the MR&T system. Located in St. Charles Parish, Louisiana, the spillway reduces risk for New Orleans and other downstream communities during major floods on the Mississippi River. This risk reduction is accomplished by diverting a portion of the floodwaters into Lake Pontchartrain and then into the Gulf of Mexico, bypassing New Orleans. This spillway was first opened during the flood of 1937, and nine times thereafter through 2011 to lower river stages at New Orleans.

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Latest News Releases

Corps awards vegetation clearing contract for risk reduction project
5/16/2019
The U.S. Army Corps of Engineers, New Orleans District recently awarded the first of two vegetation and tree clearing contracts for work related to the West Shore Lake Pontchartrain Risk Reduction...
TODAY: Corps to operate Bonnet Carré Spillway
5/10/2019
Based on changes to the current and forecasted conditions the U.S. Army Corps of Engineers will operate the Bonnet Carré Spillway today as early as 1 p.m....
Corps to host public meetings to discuss South Central Coast Study
5/10/2019
The U.S. Army Corps of Engineers, New Orleans District is hosting two public meetings to gather input on the feasibility study for hurricane protection and storm damage reduction for the South Central...