Browse Dams

92,766 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 92,766 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
Cliffside Active Ash Basin Downstream Dam North Carolina Cleveland 120 High Fair 1972 Tailings
Jamie L. Whitten Lock and Dam Mississippi Tishomingo 120 High Not Available 1983 Navigation
Edwards Reservoir California Santa Barbara 120 High Satisfactory 1985 Water Supply
Boonton Dam New Jersey Morris 120 High Satisfactory 1905 Water Supply
Martins Fork Dam Kentucky Harlan 120 High Not Available 1978 Flood Risk Reduction
Holt Lock and Dam Alabama Tuscaloosa 120 High Not Available 1968 Navigation
Cranks Creek Lake Dam Kentucky Harlan 120 High Poor 1963 Recreation
Red Mountain Reservoir California San Diego 120 High Satisfactory 1985 Water Supply
Fawn Mine #91 Refuse Impoundment Pennsylvania Butler 120 High Fair - Other
Maple Creek Slurry Pond 1 Pennsylvania Washington 120 High Satisfactory 1973 Other
Big Creek Dam No. 2 California Fresno 120 High Satisfactory 1917 Hydroelectric
Lake Desmet (South Dam) Wyoming Johnson 120 High Fair 1975 Water Supply
Elizabeth Mine Tp-1 Vermont Orange 120 High Satisfactory 1958 Tailings
Hebgen Dam Montana Gallatin 120 High Satisfactory 1915 Hydroelectric
Lemolo No 1 Oregon Douglas 120 High Fair 1955 Hydroelectric
Big Creek California Tuolumne 120 High Satisfactory 1969 Water Supply
Matrullas Dam Puerto Rico Orocovis 120 High Unsatisfactory 1934 Hydroelectric
Cordry Lake Dam Indiana Brown 120 Significant Fair 1969
Rocky Mtn Ps Lower Main Dam Georgia Floyd 120 High Satisfactory 1993 Hydroelectric
Grayson Dam Kentucky Carter 120 High Not Available 1968 Flood Risk Reduction
Rocky Mtn Ps Upper Dam and Fused Overpump Spillway Georgia Floyd 120 High Satisfactory 1995 Hydroelectric
Optima Dam Oklahoma Texas 120 High Not Available 1978 Flood Risk Reduction
Cave Creek Arizona Maricopa 120 Low Not Rated 1923 Flood Risk Reduction
Loyalhanna Dam Pennsylvania Westmoreland 120 High Not Available 1942 Flood Risk Reduction
Milton Seaman Colorado Larimer 120 High Satisfactory 1948 Water Supply
Guajataca Dam Puerto Rico Isabela 120 High Poor 1927 Hydroelectric
Tiger Creek Afterbay California Amador 120 High Fair 1931 Hydroelectric
Bluecat Lake Dam Tennessee Maury 120 High Satisfactory 1979
Lake Desmet (North Dam) Wyoming Johnson 120 High Fair 1975 Water Supply
Continental Colorado Hinsdale 120 High Satisfactory 1927 Irrigation
Cecil M. Harden Dam Indiana Parke 119 High Not Available 1960 Flood Risk Reduction
Wylie South Carolina York 119 High Satisfactory 1925 Hydroelectric
Lewiston Reservoir Dike New York Niagara 119 High Satisfactory 1963 Hydroelectric
Otter Brook Dam New Hampshire Cheshire 119 High Not Available 1958 Flood Risk Reduction
Ute Creek Colorado Grand 119 Low Not Rated 1976 Water Supply
T Or C Site 8c Dam New Mexico Sierra 119 High Fair 1981 Flood Risk Reduction
Green Verdugo California Los Angeles 118 High Satisfactory 1953 Water Supply
Dewey Dam Kentucky Floyd 118 High Not Available 1949 Flood Risk Reduction
Lake Gaillard Dam Connecticut New Haven 118 High Satisfactory 1929 Water Supply
Upper North River #76 Virginia Augusta 118 High Satisfactory - Flood Risk Reduction
Two Rivers Diamond A Dam New Mexico Chaves 118 High Not Available 1963 Flood Risk Reduction
Grassy Lake Dam Wyoming Teton 118 High Not Available 1939 Irrigation
Massena Intake New York St. Lawrence 118 High Satisfactory 1958 Hydroelectric
Cave Buttes Arizona Maricopa 118 High Satisfactory 1980 Flood Risk Reduction
Alpine Lake Dam Missouri Warren 118 High Satisfactory 2000 Recreation
Villa Park California Orange 118 High Satisfactory 1963 Flood Risk Reduction
Settlement Canyon Utah Tooele 118 High Fair 1966 Irrigation
Wirtz Dam Texas Burnet 118 High Satisfactory 1951 Irrigation
John Martin Dam - Fort Lyon Protective Works Colorado Bent 118 High Not Available 1943 Flood Risk Reduction
Elwood Dam Nebraska Gosper 118 High Satisfactory 1976 Irrigation

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.