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Natural Disasters: Economic Effects of Hurricanes Katrina, Sandy, Harvey, and Irma

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Report Type Reports and Testimonies
Report Date Sept. 10, 2020
Release Date Sept. 10, 2020
Report No. GAO-20-633R
Summary:

Katrina, Sandy, Harvey, and Irma—4 of the costliest hurricanes in the U.S. since 2005—caused damage totaling trillions of dollars. Their effects on economic activity and employment in damaged areas varied widely. State and local government officials said that the storms significantly affected certain communities, local governments, households, and businesses.

Communities are taking actions to improve resilience (e.g., elevating homes, erecting flood barriers), but many remain vulnerable. Factors like availability of funds and analysis of costs vs. benefits affect communities' decisions about what to improve and how to do it.

Mitigation projects, like this system of levees and other barriers in New Orleans, could improve communities' resilience to coastal storms and flooding.

Aerial view of a levee spanning a waterway, with an opening in the center.

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