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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.

Clear
Name State County Height (ft) Hazard Condition Year Purpose
Upper Salmon Falls A-Plant Diversion Dam Idaho Twin Falls 9 Low Satisfactory 1937 Hydroelectric
Horseshoe Bend Diversion Idaho Boise 8 Low Fair 1995 Hydroelectric
Lake Cleveland Idaho Cassia 7 Low Fair 1914 Other
Walker Dike Idaho Elmore 7 Low Fair 1954 Irrigation
Soulen Auxiliary Dike Idaho Washington 7 Low Fair 1935 Irrigation
Egin Canal Diversion Idaho Fremont 7 Low Satisfactory 1903 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.