Browse Dams

12,908 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 12,908 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
Dam A Georgia Floyd 94 High Satisfactory 1992 Hydroelectric
Lower Chase Creek Arizona Greenlee 94 High Satisfactory 1987 Other
Conowingo Maryland Cecil 94 High Satisfactory 1928 Hydroelectric
South Fork No.15 West Virginia Pendleton 93 High Satisfactory 1970 Flood Risk Reduction
Lake Chamberlain Dam Connecticut New Haven 93 High Satisfactory 1890 Water Supply
Cedar Creek Montana Flathead 93 High Satisfactory 1971 Water Supply
East Fork Dam Montana Fergus 93 High Satisfactory 1974 Recreation
Lake Mescalero New Mexico Otero 93 High Satisfactory 1974 Recreation
Alisal Creek California Santa Barbara 93 High Satisfactory 1971 Water Supply
Canon Wtrsd C-3 Colorado Fremont 93 High Satisfactory 1972 Flood Risk Reduction
Buzzards Roost Spillway South Carolina Newberry 93 High Satisfactory 1940 Hydroelectric
Lower North River # 83 Virginia Rockingham 93 High Satisfactory - Flood Risk Reduction
Riss Lake Dam Missouri Platte 93 High Satisfactory 1953 Recreation
Stingy Run Fly Ash Dam Ohio Gallia 93 High Satisfactory 1974 Tailings
Tongue River Dam Montana Big Horn 93 High Satisfactory 1939 Irrigation
Washakie Wyoming Fremont 93 High Satisfactory 1935 Irrigation
Moshier New York Herkimer 93 High Satisfactory 1930 Hydroelectric
Grandview Lake Dam Georgia Pickens 93 High Satisfactory 1946 Recreation
Reservoir A California Placer 93 High Satisfactory 1973 Water Supply
Lake Michie Dam North Carolina Durham 92 High Satisfactory 1926 Other
Beaver Run Pennsylvania Westmoreland 92 High Satisfactory 1952 Water Supply
Yonah South Carolina Oconee 92 High Satisfactory 1925 Hydroelectric
Big Quinnesec Falls Wisconsin Marinette 92 High Satisfactory 1949 Hydroelectric
J.T. Haynes Reservoir Dam Georgia Coweta 92 High Satisfactory - Recreation
East Branch Flood Control Dam Connecticut Litchfield 92 High Satisfactory - Flood Risk Reduction
Moyie Idaho Boundary 92 High Satisfactory 1949 Hydroelectric
Thomas W Koon Pennsylvania Bedford 92 High Satisfactory 1932 Water Supply
Deer Creek Diversion California Nevada 92 High Satisfactory 1928 Debris Control
Patterson Creek No.15 West Virginia Mineral 92 High Satisfactory 1965 Flood Risk Reduction
Coyote Creek California Lake 92 High Satisfactory 1968 Water Supply
Flambeau Wisconsin Rusk 92 High Satisfactory 1951 Hydroelectric
Wateree South Carolina Kershaw 92 High Satisfactory 1919 Hydroelectric
North Potato Creek Dam Tennessee Polk 92 High Satisfactory 1979
Weber California El Dorado 92 High Satisfactory 1924 Water Supply
Smith and Morehouse Utah Summit 92 High Satisfactory 1987 Irrigation
North Fork of Smith River Dam Montana Meagher 91 High Satisfactory 1936 Irrigation
South Creek - Washington County Utah Washington 91 High Satisfactory 1988 Irrigation
Timber Creek Mpd No 29 Kansas Cowley 91 High Satisfactory 1970 Flood Risk Reduction
Floodwater Ret. B-5 Colorado Larimer 91 Significant Satisfactory 1977 Flood Risk Reduction
Enterprise (Upper) Utah Washington 91 High Satisfactory 1912 Irrigation
Thermalito Forebay California Butte 91 High Satisfactory 1967 Hydroelectric
Pogo R.T.P. Dam Alaska Southeast Fairbanks Census Area 91 High Satisfactory 2005 Flood Risk Reduction
Maple Creek Slurry Pond No 2 - A Pennsylvania Washington 91 High Satisfactory 1978 Other
Joe B Hogsett Dam Texas Henderson 91 High Satisfactory 1966 Irrigation
Wheeler Branch Dam Texas Somervell 91 High Satisfactory 2008 Irrigation
Martinsdale, North Dam Montana Wheatland 91 High Satisfactory 1939 Irrigation
Fish Barrier California Butte 91 Low Satisfactory 1964 Water Supply
Upper Shepaug Dam Connecticut Litchfield 90 High Satisfactory 1965 Water Supply
Emerald No. 1 Back Valley Western Pennsylvania Greene 90 High Satisfactory - Other
Ozark Water Supply Lake Dam Arkansas Franklin 90 Significant Satisfactory 1971 Water Supply

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.