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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.

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Name State County Height (ft) Hazard Condition Year Purpose
Thompson Mtis Idaho Custer 789 High Fair 1982 Tailings
Dworshak Dam Idaho Clearwater 717 High Not Available 1973 Flood Risk Reduction
Anderson Ranch Dam Idaho Elmore 456 High Not Available 1950 Flood Risk Reduction
Arrowrock Dam Idaho Boise 350 High Not Available 1915 Flood Risk Reduction
Lucky Peak Dam Idaho Ada 340 High Not Available 1955 Flood Risk Reduction
Hells Canyon Idaho Adams 330 High Satisfactory 1967 Hydroelectric
Palisades Dam Idaho Bonneville 270 High Not Available 1957 Flood Risk Reduction
Ririe Dam Idaho Bonneville 253 High Not Available 1977 Flood Risk Reduction
Salmon Falls Idaho Twin Falls 224 High Fair 1911 Other
Oxbow Idaho Adams 209 High Fair 1961 Hydroelectric
Black Canyon Diversion Dam Idaho Gem 183 High Not Available 1924 Hydroelectric
Albeni Falls Dam Idaho Bonner 180 High Not Available 1955 Hydroelectric
Cabinet Gorge Idaho Bonner 177 High Satisfactory 1952 Hydroelectric
Deadwood Dam Idaho Valley 165 High Not Available 1931 Hydroelectric
Mann Creek Dam Idaho Washington 148 High Not Available 1967 Irrigation
Oakley Idaho Cassia 145 High Fair 1916 Irrigation
Bliss Idaho Gooding 140 High Satisfactory 1950 Hydroelectric
Lucky Friday No 4 Idaho Shoshone 132 High Satisfactory 2010 Tailings
Little Wood River Dam Idaho Blaine 129 High Not Available 1939 Irrigation
Magic Dam Idaho Blaine 128 High Unsatisfactory 1910 Hydroelectric
Texas Basin Idaho Owyhee 121 High Fair 1979 Irrigation
C J Strike Idaho Owyhee 115 High Satisfactory 1952 Hydroelectric
Oneida Main Idaho Franklin 114 High Fair 1920 Irrigation
Lower Salmon Idaho Gooding 110 High Satisfactory 1949 Hydroelectric
Grouse Creek North Idaho Custer 110 Significant Satisfactory 1994 Tailings
Cascade Dam Idaho Valley 110 High Not Available 1948 Hydroelectric
Smoky Canyon No 2 Idaho Caribou 108 Significant Satisfactory 1992 Tailings
American Falls Dam Idaho Power 104 High Not Available 1927 Flood Risk Reduction
Soda Idaho Caribou 103 High Fair 1925 Irrigation
Lucky Friday No 3 Idaho Shoshone 102 Significant Fair 1979 Tailings
Hulet Idaho Owyhee 99 High Fair 1976 Other
Daniels Idaho Oneida 96 High Fair 1967 Irrigation
Island Park Dam Idaho Fremont 94 High Not Available 1938 Irrigation
Fish Creek Idaho Blaine 92 High Poor 1923 Irrigation
Moyie Idaho Boundary 92 High Fair 1949 Hydroelectric
Deep Creek Idaho Oneida 91 High Fair 1952 Other
Crowther Idaho Oneida 90 High Fair 1948 Irrigation
Cedar Creek Idaho Twin Falls 90 High Fair 1920 Irrigation
Minidoka Dam Idaho Minidoka 88 High Not Available 1906 Fish and Wildlife Pond
Swan Falls Idaho Ada 88 High Satisfactory 1901 Hydroelectric
Upper Salmon Falls A-Plant & Forebay Idaho Twin Falls 85 Low Satisfactory 1937 Hydroelectric
Devil Creek Idaho Oneida 84 High Fair 1969 Irrigation
Montpelier Creek Idaho Bear Lake 82 High Fair 1971 Other
Smoky Canyon No 1 Idaho Caribou 80 Low Fair 1983 Tailings
Milner Dam-Middle Idaho Twin Falls 80 High Satisfactory 1905 Irrigation
Fairchild No. 1 (Upper) Idaho Washington 78 High Fair 1975 Irrigation
Aikman Idaho Gem 77 High Fair 1999 Irrigation
Thompson Srd Idaho Custer 77 Significant Satisfactory 1982 Water Supply
Stewart Gulch Main Fork Idaho Ada 76 Significant Satisfactory 1998 Flood Risk Reduction
Mackay Idaho Custer 75 High Fair 1918 Other

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.