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Browse Dams

3,029 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 3,029 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
Burnt Fork Dam Montana Ravalli 42 High Not Rated 1902 Irrigation
Spaniard Montana Cascade 42 Low — 1962 Irrigation
Vananda Montana Rosebud 42 Low — 1936 Irrigation
Anita Dam Montana Yellowstone 42 Low Not Available 1937 Irrigation
Square Butte Detention Dam Montana Phillips 42 Low Poor 1967 Flood Risk Reduction
Depression Detention Dam Montana Carbon 42 High Poor 1968 Flood Risk Reduction
Faber Cattle Montana Blaine 42 Significant — 1930 Fire Protection, Stock, Or ...
Ninepipe Montana Lake 41 High Fair 1911 Irrigation
Black Eagle Montana Cascade 41 High Poor 1891 Hydroelectric
Collins Detention Reservoir Montana Valley 41 Low — 1957 Fire Protection, Stock, Or ...
Lark Detention Dam Montana Phillips 41 Low Fair 1968 Flood Risk Reduction
Eureka Holding Pond Dike Montana Lincoln 40 Significant — 1982 Other
Willow Creek Dike 2 Montana Big Horn 40 Undetermined Fair 1941 Irrigation
Upper Dry Fork Montana Sanders 40 High Unsatisfactory 1940 Irrigation
Olson, Oscar (Meagher) Montana Meagher 40 High Satisfactory 1959 Irrigation
Dry Blood Creek Dam Montana Petroleum 40 High Fair 1964 Flood Risk Reduction
Pond R1 Montana Big Horn 40 Low — 1989 Other
Swift (Prairie) Montana Prairie 40 Low — 1965 Fire Protection, Stock, Or ...
Hankins #1 Montana Chouteau 40 Low — 1950 Fire Protection, Stock, Or ...
Golden Glenn #1 Montana Carbon 40 Low — 1947 Irrigation
Stone Ranch Dam Montana Fergus 40 Low — 2001 Fish and Wildlife Pond
Supenau Lake Montana Hill 40 Significant — 1959 Fire Protection, Stock, Or ...
Gay #2 Montana Powder River 40 Low — 1948 Fire Protection, Stock, Or ...
Elderly Dam Montana Fergus 40 Significant — 1975 Fire Protection, Stock, Or ...
Dreves Montana Yellowstone 39 Significant — 1938 Fire Protection, Stock, Or ...
Cottonwood Dam (Park) Montana Park 39 High Poor 1953 Irrigation
Gerald Kane Montana Blaine 39 Significant — 1965 Irrigation
Marstaeller Irrigation Dam Montana Sweet Grass 39 Low — 1984 Irrigation
Graber #2 Montana Fergus 39 Low — 1958 Fire Protection, Stock, Or ...
Madison Dam Montana Madison 39 High Satisfactory 1907 Hydroelectric
Mcnab Dam Montana Valley 39 Low Unsatisfactory 2003
Prescott Montana Hill 38 Low — 1901 Fire Protection, Stock, Or ...
Gutshot Detention Dam Montana Valley 38 Low Unsatisfactory 1965 Flood Risk Reduction
Giacometto #1 Montana Powder River 38 Significant — 1953 Fire Protection, Stock, Or ...
Donley Reservoir (Rosebud) Montana Rosebud 38 Low — 1930 Fire Protection, Stock, Or ...
Jordan Dam Montana Park 38 High Poor 1961 Irrigation
Tarzan Montana Blaine 38 Low — 1973 Fire Protection, Stock, Or ...
Gollaher Reservoir Montana Cascade 38 Significant — 1945 Irrigation
Sugar Montana Blaine 38 Low — 1940 Fire Protection, Stock, Or ...
Holliday -Flagstaff Lake- Montana Meagher 38 Low — 1939 Irrigation
Cottonwood Montana Fergus 38 Low — 1964 Fire Protection, Stock, Or ...
Mccarter North Dam Montana Toole 38 Significant — 1953 Irrigation
Moving'Along Montana Teton 38 Low — 1948 Irrigation
Christensen (Richland) Montana Richland 38 Low — 1970 Flood Risk Reduction
Davis Creek Dam Montana Powell 38 Significant Not Rated 1960 Irrigation
Armells Reservoir Montana Fergus 38 Low — 1951 Irrigation
Wolf Coulee Dam Montana Teton 38 Significant — 2004 Irrigation
Pishkun Dike 4 Montana Teton 38 High Not Available 1931 Irrigation
Yellow Water Main Dam Montana Petroleum 37 High Fair 1938 Irrigation
Reser Dam Montana Blaine 37 Low Unsatisfactory 1980 Recreation

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.