Browse Dams

1,356 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,356 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
Garside Reservoir Dam Massachusetts Plymouth 5 Significant Fair 1909 Recreation
Fernwood Lake East Dam Massachusetts Essex 5 High Poor 1877 Recreation
Ames Pond Dike B Massachusetts Middlesex 5 Significant Satisfactory - Recreation
Breeds Pond Dike No. 10 Massachusetts Essex 5 High Fair 1914 Water Supply
Wachusett Lake Dam Massachusetts Worcester 4 Significant Fair 1905 Flood Risk Reduction
Structure West of Daniel Shays Road Massachusetts Middlesex 0 High - -

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.