Dam Safety: Federal Programs and Authorities (CRS Report for Congress)
| Release Date |
Revised Dec. 13, 2021 |
| Report Number |
IF10606 |
| Report Type |
In Focus |
| Authors |
Anna E. Normand |
| Source Agency |
Congressional Research Service |
| Older Revisions |
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Summary:
According to the National Inventory of Dams (NID), there
are more than 90,000 dams in the United States. Of these,
about 4% are owned and operated by the federal
government; the remaining 96% are owned by state and
local governments, public utilities, or private companies
(see Figure 1). Many of these dams were built more than
50 years ago. Recent events—including the evacuation of
thousands of people in California due to structural
deficiencies of the emergency spillway at Oroville Dam (a
state-owned dam)—have led to increased attention on the
condition of dams and the federal role in dam safety. This
document discusses the U.S. dam inventory, safety repair
estimates, federal dam safety efforts, and related issues for
Congress.
