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Browse Dams

406 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 406 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.

Name State County Height (ft) Hazard Condition Year Purpose
Hagberry Idaho Owyhee 23 Low Fair 1925 Other
Munsee Idaho Twin Falls 23 Low Fair 1977 Irrigation
Idc-Effluent Storage Idaho Ada 23 Significant Satisfactory 1998 Irrigation
Sulphur Gulch Idaho Payette 23 Low Fair 1976 Irrigation
Upper Diversion Dam #1 Idaho Bonneville 23 Low Satisfactory 1982 Hydroelectric
Kiblen West Idaho Kootenai 23 Significant Fair 1969 Recreation
Trail Creek Dam Idaho Blaine 23 High Fair 1937 Other
Equalizer Idaho Bingham 23 High Fair 1937 Irrigation
Hubbard Dam Idaho Ada 23 Low Not Available 1902 Irrigation
Antelope Creek Idaho Bonneville 22 Significant Fair 1991 Irrigation
Webster Idaho Madison 22 Low Fair 1976 Irrigation
Lehman Creek Upper Idaho Custer 22 Low Poor 1925 Other
Elk River Idaho Clearwater 22 Low Poor 1951 Other
Soulen Family Dam Idaho Valley 22 Low Fair 2009 Other
Sheridan Idaho Clark 22 Significant Poor 1873 Other
Thorn Creek Dam Idaho Gooding 22 Low Not Rated — Fire Protection, Stock, Or ...
Poro Idaho Valley 22 Low Fair 1947 Irrigation
Casperson Idaho Franklin 22 Low Fair 1958 Irrigation
Grasmere North Dam Idaho Owyhee 22 Significant Poor 1936 Other
Oxford Idaho Franklin 21 Low Fair 1920 Other
Foreman Idaho Owyhee 21 Significant Poor 1929 Other
Brown Idaho Valley 21 Low Fair 1979 Irrigation
Pitkin Idaho Valley 21 Significant Fair 1974 Recreation
Lehman Creek Lower Idaho Custer 21 Low Poor 1999 Recreation
Simplot Decant Pond Idaho Power 21 Low Satisfactory 2009 Tailings
Arcadia Upper Idaho Fremont 21 Low Poor 1912 Irrigation
Alder Idaho Owyhee 21 Low Poor 1909 Irrigation
Mchan Idaho Camas 21 Low Fair 1918 Irrigation
Nash Idaho Franklin 21 Low Fair 1952 Irrigation
Hornet Creek Upper North Idaho Washington 21 Significant Fair 1913 Irrigation
Gardiner Lower Idaho Bear Lake 21 Low Poor 1935 Irrigation
Nouque Idaho Owyhee 21 Low Satisfactory 1967 Irrigation
Idaho Cobalt Wmp Idaho Lemhi 21 Low Not Rated 2019 Other
Minidoka South Dike Idaho Cassia 21 High Not Available 1906 Hydroelectric
Lamb-Weston Idaho Power 20 Low Fair 1974 Other
Scott Creek Idaho Washington 20 Significant Fair 1977 Irrigation
Moose Creek Idaho Latah 20 Low Fair 1960 Recreation
Slack Idaho Owyhee 20 Low Satisfactory 1916 Other
Rio Vista Idaho Valley 20 Significant Fair 1971 Recreation
Scrappy Creek Idaho Owyhee 20 Low Poor 1927 Irrigation
Gatfield No 2 Idaho Gem 20 Significant Fair 1951 Other
Arrowhead Reservoir Idaho Lemhi 20 Significant Fair 1975 Irrigation
Beartrack Treatment Lagoon Idaho Lemhi 20 Low Satisfactory 1995 Tailings
Itafos Cooling Pond Idaho Caribou 20 High Satisfactory 1995 Other
Cottonwood Creek Middle Idaho Ada 20 Significant Fair 1961 Flood Risk Reduction
Summit Idaho Custer 19 Low Fair 1921 Irrigation
Mcarthur Idaho Boundary 19 High Fair 1967 Other
Warren Diversion Idaho Valley 19 Significant Fair 1924 Irrigation
Jacobs Idaho Fremont 19 Low Fair 1935 Other
Blanchard Creek Idaho Bonner 19 Significant Poor 1910 Irrigation

Frequently Asked Questions

Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.

Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.

Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.