The sea level around Louisiana is 24 inches higher than it was in 1950.1 This increase is mostly due to sinking land, and it’s causing major issues. New Orleans is the largest population center at risk from sea level rise in the country and is now experiencing one of the highest rates of sea level rise in the world. Because the state is already losing approximately 25 square miles of land per decade due to sea level rise,2 Louisiana’s coastal marshes, which provide protection for inland communities and habitat for countless species, are threatened. The state is planning over $25 billion in sea level rise solutions, which include building levees, restoring shorelines, and relocating entire communities.
Sea level rise is speeding up
Although the sea has only risen by 24 inches since 1950, its speed of rise has accelerated over the last ten years and it’s now rising by over 1 inch every 2 years.1 Scientists know this because the sea level is measured every 6 minutes using equipment like satellites, floating buoys off the coast, and tidal gauges to accurately measure the local sea level as it accelerates and changes.4
SEA LEVEL MEASUREMENT FROM GRAND ISLE AREA TIDE GAUGE SINCE 1950