Southeast Atlantic Coast Faces Major Climate Risks: $1 Trillion in Property Could Be Lost, 14 Million Americans at Risk

The southeast Atlantic coast of the United States is at a really big risk from climate change, threatening millions of people and billions of dollars in property. A recent study conducted by the U.S. Geological Survey with alarming results warns that factors such as rising groundwater levels, land sinking, and flooding could displace millions of residents and damage over $1 trillion worth of property.

Rising Groundwater Levels and Sinking Land Threaten Coastal Areas

The study, that appeared in Nature Climate Change, emphasizes that more than 70% of coastal inhabitants may face the threat of shallow flooding due to their groundwater by 2100. Groundwater levels are known to be 15 times more hazardous than regular surface floodings, thus making matters more challenging for local government authorities to manage. Experts also indicate the impact of subsidence, especially in regions such as Georgia, South Carolina, and North Carolina, whose land sinks 1 to 2 millimeters per year because of subterranean processes and human activities like damming rivers.

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Increased Flooding and Coastal Storms to Displace Millions

As sea levels rise, coastal flooding will worsen, with projections showing that more than 50% of coastal residents could be affected by increased storms and hurricanes. This could lead to the loss of 80% of the region's beaches and significant damage to infrastructure like roads and utilities. The compounding effects of sinking land and rising groundwater will make these problems even harder to address, particularly for over 14 million Americans who live in the most vulnerable areas of the southeast.

Urgency for Adaptation Strategies and Planning

The researchers stress that robust adaptation strategies are needed to protect communities from the combined effects of rising sea levels, groundwater flooding, and land sinking. Experts like Manoochehr Shirzaei from Virginia Tech University suggest that cities and coastal regions should rethink how they plan and build infrastructure to withstand these compounded climate challenges. This study also shows that there is a need to include more climate hazards in resilience strategies to protect these high-risk coastal communities.

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FAQs:

How much property could be lost due to these climate risks?
Property worth up to $1 trillion could be affected by flooding, rising groundwater levels, and sinking land on the Southeast Atlantic Coast.

What are the causes of land sinking in the Southeast Atlantic Coast?
Land sinking is mainly due to underground adjustments, changes in land levels, and dams blocking sediment that would naturally replenish coastal lands.