Question
How many high-hazard dams have EAPs?
As of October 30, 2026, 13,191 of the 17,036 high-hazard records have an emergency action plan (EAP) prepared, 2,472 have none where one is required, 1,361 are not required to have one and 12 have no answer, according to the National Inventory of Dams.
Yes is 77.5% of the 17,024 records with an answer. Yes includes a record that has a plan though none is required, and the NID defines No this way: “If an EAP is required and does not have one, it will be listed as No.” A record with no answer is kept apart from every answer and never counted as a No, and a count is of records, not of dams.
Data retrieved
The figures behind this
| Answer | High-hazard records | Share of records with an answer |
|---|---|---|
| Yes | 13,191 | 77.5% |
| No | 2,472 | 14.5% |
| Not Required | 1,361 | 8.0% |
| Not published: no answer in the NID | 12 | Not counted in the share |
| All high-hazard records | 17,036 | 17,024 with an answer |
Where to go next
More questions about Dams
- What is a high-hazard dam?
17,036 records October 2026
- How many dams are in poor condition?
9,023 records October 2026
- How old are dams in the US?
18,610 records, 1960-1969 October 2026
- Who owns the dams in the US?
60,388 records, Private October 2026
Sources
- National Inventory of Dams — national CSV — U.S. Army Corps of Engineers, National Inventory of Dams · U.S. Government work · retrieved November 5, 2026
Compiled automatically from National Inventory of Dams — national CSV by a checked SQL query · Editor: Kian O'Connor · How this site is built
How to cite this page
Cite the page’s address and the date printed on it, and name U.S. Army Corps of Engineers, National Inventory of Dams as the source of the figures.
American Factbook. “How many high-hazard dams have EAPs?.” Updated November 5, 2026. https://americanfactbook.org/dams/high-hazard-dams-with-eaps. Source: National Inventory of Dams — national CSV, https://nid.sec.usace.army.mil/.