One in dams in the United States are at significant or high risk to hazards. Poorly maintained dams are ill-prepared for heavy rain events or may even fail over time. Dam failures can be costly due to flooding damages or loss of construction.
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The Guardian. (May 23, 2020). Breakdown of dams in the United States, by hazard risk as of 2020 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 20, 2026, from /statistics/1122058/us-dams-hazard-risk/
The Guardian. "Breakdown of dams in the United States, by hazard risk as of 2020." Chart. May 23, 2020. ÌÇÐÄÆÆ½â°æ. Accessed July 20, 2026. /statistics/1122058/us-dams-hazard-risk/
The Guardian. (2020). Breakdown of dams in the United States, by hazard risk as of 2020. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 20, 2026. /statistics/1122058/us-dams-hazard-risk/
The Guardian. "Breakdown of Dams in The United States, by Hazard Risk as of 2020." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 23 May 2020, /statistics/1122058/us-dams-hazard-risk/
The Guardian, Breakdown of dams in the United States, by hazard risk as of 2020 ÌÇÐÄÆÆ½â°æ, /statistics/1122058/us-dams-hazard-risk/ (last visited July 20, 2026)
Breakdown of dams in the United States, by hazard risk as of 2020 [Graph], The Guardian, May 23, 2020. [Online]. Available: /statistics/1122058/us-dams-hazard-risk/