Browse Dams

16,901 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 16,901 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
Chino Mines Tailings Dam No. 7 New Mexico Grant 230 High Satisfactory 1988 Tailings
Horsetooth-Soldier Canyon Colorado Larimer 230 High Not Available 1949 Irrigation
Calderwood Tennessee Blount 230 High Satisfactory 1930 Hydroelectric
Masonry Dam Washington King 230 High Satisfactory 1914 Hydroelectric
Trampas Canyon California Orange 229 High Satisfactory 1975 Other
Beaver Dam - Saddle Dike 3 Arkansas Carroll 229 High Not Available 1963 Flood Risk Reduction
Pacificorp - Electric Lake Utah Emery 229 High Satisfactory 1974 Water Supply
Beaver Dam Arkansas Carroll 228 High Not Available 1963 Flood Risk Reduction
Rollins California Nevada 228 High Satisfactory 1965 Water Supply
Ramona California San Diego 228 High Satisfactory 1988 Water Supply
Pit No. 7 Diversion California Shasta 228 High Satisfactory 1965 Hydroelectric
Sanford Dam Texas Hutchinson 228 High Not Available 1965 Recreation
Lower Granite Lock and Dam Washington Whitman 228 High Not Available 1975 Navigation
4 West Arizona Graham 226 High Not Available — Tailings
Lower Monumental Lock and Dam Washington Franklin 226 High Not Available 1969 Navigation
Little Goose Lock and Dam Washington Columbia 226 High Not Available 1970 Navigation
New Lake Arrowhead California San Bernardino 225 High Satisfactory 1976 Water Supply
Big Santa Anita California Los Angeles 225 High Satisfactory 1927 Flood Risk Reduction
Horsetooth-Spring Canyon Colorado Larimer 225 High Not Available 1949 Irrigation
Indian Valley California Lake 225 High Fair 1975 Irrigation
Broken Bow Dam Oklahoma McCurtain 225 High Not Available 1968 Flood Risk Reduction
Long Lake Washington Stevens 225 High Fair 1915 Hydroelectric
Canyon Ferry Dam Montana Lewis and Clark 225 High Not Available 1954 Flood Risk Reduction
Raystown Dam Pennsylvania Huntingdon 225 High Not Available 1973 Flood Risk Reduction
San Joaquin Reservoir California Orange 224 High Satisfactory 1966 Water Supply
Mormon Flat Dam Arizona Maricopa 224 High Not Available 1926 Hydroelectric
Little Dell Utah Salt Lake 224 High Satisfactory 1993 Water Supply
Canyon Lake Dam - Dike A Texas Comal 224 High Not Available 1964 Flood Risk Reduction
Canyon Lake Dam Texas Comal 224 High Not Available 1964 Flood Risk Reduction
Salmon Falls Idaho Twin Falls 224 High Fair 1911 Other
Colebrook River Dam Connecticut Litchfield 223 High Not Available 1969 Flood Risk Reduction
John Amos Flyash Dam West Virginia Putnam 223 High Satisfactory 1978 Tailings
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
Portugues Dam Puerto Rico Ponce 220 High Satisfactory 2015 Flood Risk Reduction
Big Tujunga No. 1 California Los Angeles 220 High Satisfactory 1931 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
Philpott Dam Virginia Franklin 220 High Not Available 1953 Flood Risk Reduction
Boysen Dam Wyoming Fremont 220 High Not Available 1952 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
Toa Vaca Dam Puerto Rico Villalba 215 High Satisfactory 1972 Irrigation
Bear Creek North Carolina Jackson 215 High Satisfactory 1954 Hydroelectric
King Branch Slurry Dam Kentucky Knott 214 High Not Available — Tailings
Carter Lake Dam 1 Colorado Larimer 214 High Not Available 1952 Hydroelectric
Button Rock Colorado Boulder 214 High Satisfactory 1969 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.