Study Highlights Economic and Flood Risks of Wetland Loss in the U.S.
Study Highlights Economic and Flood Risks of Wetland Loss in the U.S.
US · Published Jun 2, 2026
A recent study published in Nature Water reveals the significant role wetlands play in mitigating flood damages across the United States.
Wetlands, often referred to as 'natural sponges,' help store stormwater and slow runoff, reducing the impact of heavy rains and storms.
The research, conducted by the Environmental Defense Fund (EDF), estimates that wetland loss has increased residential flood insurance claim payments by $10.1 billion since 1985, accounting for approximately 9% of insured riverine flood losses.

Why It's Important?

The loss of wetlands has led to increased flood damages, particularly in urban areas like Houston and coastal regions of Louisiana and Florida. Communities downstream of degraded wetlands face higher flood risks, with lower-income and minority populations bearing a disproportionate share of the burden. The study estimates that the average value of wetlands in reducing residential flood losses is $15,738 per hectare, with some areas exceeding $300,000 per hectare. Without adequate protections, the continued loss of wetlands could exacerbate flood risks, increase insurance costs, and strain local economies. The study also warns that recent changes to federal wetland protections could leave up to 91% of non-tidal wetlands unprotected, further increasing flood risks.

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