Report: $14 Billion New Orleans Flood System, Completed Less Than a Year Ago, Already Obsolete

The Army Corps of Engineers is already assessing the needs of repair work on a project it completed in May 2018 at the cost of $14 billion.

1 minute read

April 22, 2019, 6:00 AM PDT

By James Brasuell @CasualBrasuell


Levee flooding New Orleans

CWO2 Kiel Skager, USA / The U.S. National Archives

Thomas Frank sums up a distressing state of affairs in Louisiana:

The $14 billion network of levees and floodwalls that was built to protect greater New Orleans after Hurricane Katrina was a seemingly invincible bulwark against flooding.

But now, 11 months after the Army Corps of Engineers completed one of the largest public works projects in world history, the agency says the system will stop providing adequate protection in as little as four years because of rising sea levels and shrinking levees.

Frank also explains about why the new flood control system has so quickly become obsolete:

The agency’s projection that the system will “no longer provide [required] risk reduction as early as 2023” illustrates the rapidly changing conditions being experienced both globally as sea levels rise faster than expected and locally as erosion wipes out protective barrier islands and marshlands in southeastern Louisiana.

At particular risk are the "earthen levees that form the backbone of the 350-mile maze of protection that includes concrete floodwalls, pump stations and gated structures," according to Frank. The levees are settling as the sea level rises.

Thursday, April 11, 2019 in E&E News

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 9, 2025 - Diana Ionescu

Map of Haussmann's redesign of Paris in the 1850s through 1870s under Napoleon III.

In Urban Planning, AI Prompting Could be the New Design Thinking

Creativity has long been key to great urban design. What if we see AI as our new creative partner?

June 30, 2025 - Tom Sanchez

Wood-framed multi-family building under construction with red crane behind it.

California Creates Housing-Focused Agency

Previously, the state’s housing and homelessness programs fell under a grabbag department that also regulates the alcohol industry, car mechanics, and horse racing.

July 13 - CALmatters

Green vintage Chicago streetcar from the 1940s parked at the Illinois Railroad Museum in 1988.

Chicago’s Ghost Rails

Just beneath the surface of the modern city lie the remnants of its expansive early 20th-century streetcar system.

July 13 - WTTV

Red and black pavilion with visitor information in public park in Knoxville, Tennessee.

Baker Creek Pavilion: Blending Nature and Architecture in Knoxville

Knoxville’s urban wilderness planning initiative unveils the "Baker Creek Pavilion" to increase the city's access to green spaces.

July 13 - Dezeen