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Browse Dams

92,625 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 92,625 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
Salmon Falls Idaho Twin Falls 224 High Fair 1911 Other
Canyon Lake Dam Texas Comal 224 High Not Available 1964 Flood Risk Reduction
Mormon Flat Dam Arizona Maricopa 224 High Not Available 1926 Hydroelectric
Canyon Lake Dam - Dike A Texas Comal 224 High Not Available 1964 Flood Risk Reduction
John Amos Flyash Dam West Virginia Putnam 223 High Satisfactory 1978 Tailings
Colebrook River Dam Connecticut Litchfield 223 High Not Available 1969 Flood Risk Reduction
Del Valle California Alameda 222 High Fair 1968 Flood Risk Reduction
KU Ghent ATB 2 Kentucky Carroll 222 High Satisfactory 1994 Other
Cheesman Colorado Jefferson 221 High Satisfactory 1905 Water Supply
Mill 5/6 East Tailings Storage Facility Nevada Eureka 220 Significant Satisfactory 2019 Tailings
Portugues Dam Puerto Rico Ponce 220 High Satisfactory 2015 Flood Risk Reduction
Boysen Dam Wyoming Fremont 220 High Not Available 1952 Flood Risk Reduction
Philpott Dam Virginia Franklin 220 High Not Available 1953 Flood Risk Reduction
Box Canyon California Siskiyou 220 High Satisfactory 1970 Flood Risk Reduction
McNary Lock and Dam Oregon Benton 220 High Not Available 1954 Navigation
A-A Tails Dam Nevada Eureka 220 Significant Fair 1989 Tailings
Big Tujunga No. 1 California Los Angeles 220 High Satisfactory 1931 Flood Risk Reduction
Buchanan Dam California Madera 219 High Not Available 1975 Flood Risk Reduction
Causey Dam Utah Weber 218 High Not Available 1966 Irrigation
La Grande Washington Thurston 217 High Satisfactory 1944 Hydroelectric
Santeetlah North Carolina Graham 216 High Poor 1928 Hydroelectric
Moss No. 3 Third Dam Virginia Russell 216 Undetermined Not Rated — Tailings
Toa Vaca Dam Puerto Rico Villalba 215 High Satisfactory 1972 Irrigation
Cortez Area 28 Tsf Dam Nevada Lander 215 Low Fair 1997 Tailings
Bear Creek North Carolina Jackson 215 High Satisfactory 1954 Hydroelectric
Button Rock Colorado Boulder 214 High Satisfactory 1969 Water Supply
Yadkin Narrows North Carolina Stanly 214 High Satisfactory 1917 Hydroelectric
Carter Lake Dam 1 Colorado Larimer 214 High Not Available 1952 Hydroelectric
Iron Canyon California Shasta 214 High Satisfactory 1965 Hydroelectric
King Branch Slurry Dam Kentucky Knott 214 High Not Available — Tailings
Pathfinder Dam Wyoming Natrona 214 High Not Available 1909 Hydroelectric
Santa Rosa Dam New Mexico Guadalupe 214 High Not Available 1979 Flood Risk Reduction
Saluda Backup Berm South Carolina Lexington 213 High Satisfactory 2005 Hydroelectric
Rockcamp Branch Refuse Disposal Facility West Virginia Nicholas 213 High Not Available — Tailings
Brush Creek California El Dorado 213 Significant Satisfactory 1970 Hydroelectric
Ashokan Dam New York Ulster 213 High Satisfactory 1916 Water Supply
Santa Felicia California Ventura 213 High Poor 1955 Water Supply
Questa Tailings Dam 4 New Mexico Taos 212 High Satisfactory 1966 Tailings
Lake Fort Smith Dam Arkansas Poinsett 212 High Fair 1936 Water Supply
Tiber Dam Montana Liberty 211 High Not Available 1956 Flood Risk Reduction
Starvation Dam Utah Duchesne 210 High Not Available 1970 Irrigation
Stewart Mountain Dam Arizona Maricopa 210 High Not Available 1930 Hydroelectric
Green Lake Alaska City and Borough of Sitka 210 Significant Satisfactory 1982 Hydroelectric
Mill 5/6 West Tails Storage Facility Nevada Eureka 210 Low Fair 2011 Tailings
Cabin Creek Upper Colorado Clear Creek 210 High Satisfactory 1967 Hydroelectric
Victoria Michigan Ontonagon 210 High Satisfactory 1930 Hydroelectric
Steer Branch Dam Virginia Wise 210 Undetermined Not Rated — Other
New Calaveras California Alameda 210 High Satisfactory 2018 Water Supply
Little Grass Valley California Plumas 210 High Satisfactory 1961 Hydroelectric
North Catamount Colorado Teller 210 High Satisfactory 1959 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.