Study: Some Parts of New Orleans’ Flood Walls Sinking Nearly 2 Inches per Year

Disappearing cities on US coasts

The sea level along the US coastlines is projected to rise by 0.25–0.3 m by 2050, increasing the probability of more destructive flooding and inundation in major cities1–3. However, these impacts may be exacerbated by coastal subsidence—the sinking of coastal land areas4—a factor that is often underrepresented in coastal-management policies and long-term urban planning2,5. In this study, we combine high-resolution vertical land motion (that is, …

A new study using satellite radar finds some flood walls and neighbourhoods in Greater New Orleans are subsiding by up to 28 mm per year, raising urgent flood risk concerns.

New Orleans is sinking—and so are its $15 billion flood defenses

Parts of New Orleans are sinking at alarming rates — including some of the very floodwalls built to protect it. A new satellite-based study finds that some areas are losing nearly two inches of elevation per year, threatening the effectiveness of the city's storm defenses.

New Study: New Orleans Flood Walls Sinking Fast

A new study about N.O.'s $15 billion flood defenses says flood walls meant to protect the city are sinking fast.

New Orleans' flood barriers are sinking_ study finds

It's been nearly 20 years since

Sections of New Orleans floodwalls are sinking faster than sea levels are rising, study finds

New research shows New Orleans’ $15 billion flood control system is sinking up to 28 millimeters per year—outpacing sea-level rise and threatening future storm protection.