Sea Walls Are No Match For Severe Storms Made Worse By Climate Change

Sea Walls Are No Match For Severe Storms Made Worse By Climate Change

Hurricane Isaias, while only a category 1 (low strength) storm, caused great damage along the coast of the Carolinas and inland up the I-95 corridor, with several people killed, leaving nearly 3 million people without power, and causing widespread flooding necessitating water rescues up the Eastern seaboard all the way from Myrtle Beach, SC to Philadelphia, CNN reported last night

Why This Matters:  Sea level rise and coastal flooding are some of today’s toughest climate challenges.  While the gut instinct may be to “build that wall,” in the case of the ocean, walls and other “hardened” structures only make matters worse.

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Sunny Day Flooding Increasing Around the U.S. According to New Government Report

Sunny Day Flooding Increasing Around the U.S. According to New Government Report

The National Oceanic and Atmospheric Administration (NOAA) issued its annual report on high tide (a.k.a. sunny day) flooding and found that high tide flooding happens twice as often as it did in 2000 due to sea-level rise.   Nineteen cities and towns along the East and Gulf Coasts broke or tied their all-time high tide flooding […]

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Mississippi River Delta Is In Jeopardy – Undoing Decades of Flood Protection Could Save It

Mississippi River Delta Is In Jeopardy – Undoing Decades of Flood Protection Could Save It

A new study released earlier this summer found that the “marshes in the Mississippi River delta have hit a tipping point.” While the study concluded we are past the tipping point, the lead author Torbjörn Törnqvist told Nola.com that this cannot paralyze us into inaction. One important step towards that would be to build on and execute Louisiana’s 2023 Coastal Master Plan, which builds on a previous plan of the same name.

Why This Matters: Coastal marshes are “among the most valuable ecosystems on the planet” due to their vital contributions to storm protection, nutrient cycling, and more.

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Millions More American Homes at Risk of Flooding than Previously Thought

Millions More American Homes at Risk of Flooding than Previously Thought

An alarming new analysis from the First Street Foundation revealed that millions of American homes are at a growing risk of extreme flooding. As CNN wrote, today, around 8.7 million properties are located in Special Flood Hazard Areas as determined by FEMA’s flood maps, the legal standard used in the US to manage floodplains, determine […]

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Feds Propose to Spend Billions to Build Walls To Shore Up Miami From Sea Level Rise

Feds Propose to Spend Billions to Build Walls To Shore Up Miami From Sea Level Rise

Just as Tropical Storm Cristobal prepared to make landfall in Louisiana, the Army Corps of Engineers (COE) released a plan on Saturday to spend nearly $5B to build miles of sea walls around parts of Miami that are vulnerable to storm surge and sea-level rise, local media there reported.

Why This Matters:  Similar studies by the Army Corps are going on all over the country — New York City, Norfolk, Virginia, and in the Florida Keys.  The feds abruptly pulled in February the COE’s plans for a sea wall for New York City without comment.

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Louisiana Marshes May Be A Goner Due To Expected Sea Level Rise

Louisiana Marshes May Be A Goner Due To Expected Sea Level Rise

A new study in the Journal of Science Advances concludes that the “drowning” of the roughly 15,000 square kilometers of remaining marshland in the Mississippi River Delta of Louisiana is “past the tipping point” and now “probably inevitable,” according to The Washington Post

Why This Matters:  Louisiana has already lost one-fourth of the land in the Delta at the beginning of the last century.

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