Louisiana Coast Will Disappear, Study Says. The Only Question Is How Soon.

Sea-level rise has passed a tipping point in the Gulf of Mexico.

1 minute read

May 26, 2020, 5:00 AM PDT

By James Brasuell @CasualBrasuell


New Orleans, Hurricane Katrina

NOAA Photo Library / Flickr

Mark Schleifstein shares news of a study published in Science Advances that makes a dire prediction for the Louisiana coast: "[T]he remaining 5,800 square miles of Louisiana's coastal wetlands in the Mississippi River delta will disappear." The only question is when.

According to the authors of the study, the wetlands that run along the coast of Louisiana have already reached a tipping point, as sea-level rise trends consistent around the world supplement the local conditions created by the Mississippi River meeting the Gulf of Mexico.

The study's lead author, Torbjörn Törnqvist, a Tulane University geology professor, is cited in the article predicting that the future shoreline "will parallel what's known as the Baton Rouge Fault, an east-west line where land heights today are at about 15 feet above sea level."

"For the New Orleans area, that would be along the North Shore, somewhere near Interstate 12," writes Schleifstein.

Friday, May 22, 2020 in NOLA.com

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

Overlapping highways

The state-sanctioned urbicide of Austin

People don’t kill cities. Freeways do.

September 8, 2026 - Benjamin Schneider

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

Skyscrapers in Jersey City.

New Jersey’s second-largest city bans standalone data centers

Jersey City will continue to allow co-location facilities, such as those meant for research institutions that store their own data.

September 4, 2026 - The Cool Down

A New Jersey train approaches people waiting at the station.

Amtrak not solely to blame for New Jersey commuter rail's unreliability, report finds

A new study from the Garden State Initiative found that NJ Transit’s budget grew 20% across a 4 year period, but reliability declined significantly over the same period.

September 15 - Mass Transit

A tall, gray power plant billows smoke into a blue sky.

EPA erases limits on planet-warming pollution from power plants

Under Monday’s plan, power plants would still have some limits on how much mercury, arsenic and other contaminants they can emit.

September 15 - New York Times

A white RAPID bus. The lower half is light blue, and says RAPID in purple text. The bus is half visible, appearing from the left side of the image.

Phoenix announces new on-demand transit service, more frequent RAPID buses

Both new services will launch in October, and are part of Phoenix's Project Effective Access Solutions for Easing Congestion.

September 15 - KJZZ

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.