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
Jamie L. Whitten Lock and Dam Mississippi Tishomingo 120 High Not Available 1983 Navigation
Lake Desmet (A,B,C & Spillway Dikes) Wyoming Johnson 120 High Fair 1975 Water Supply
Cordry Lake Dam Indiana Brown 120 Significant Fair 1969
Grayson Dam Kentucky Carter 120 High Not Available 1968 Flood Risk Reduction
Lake Brownwood Dam Texas Brown 120 High Satisfactory 1933 Water Supply
Elizabeth Mine Tp-1 Vermont Orange 120 High Satisfactory 1958 Tailings
Lake Desmet (North Dam) Wyoming Johnson 120 High Fair 1975 Water Supply
Wallace Georgia Hancock 120 High Satisfactory 1980 Hydroelectric
Little Mulberry Creek Site 1 Arkansas Crawford 120 High Fair 1975 Water Supply
Upper Dam Georgia Floyd 120 High Satisfactory 1995 Hydroelectric
Boonton Dam New Jersey Morris 120 High Satisfactory 1905 Water Supply
Tiger Creek Afterbay Dam California Amador 120 High Fair 1931 Hydroelectric
Red Mountain Reservoir California San Diego 120 High Satisfactory 1985 Water Supply
Yadkin Falls North Carolina Montgomery 120 High Satisfactory 1919 Hydroelectric
Martins Fork Dam Kentucky Harlan 120 High Not Available 1978 Flood Risk Reduction
Harman Mining Corp Dam Virginia Buchanan 120 Undetermined Not Rated - Other
Loyalhanna Dam Pennsylvania Westmoreland 120 High Not Available 1942 Flood Risk Reduction
Fawn Mine #91 Refuse Impoundment Pennsylvania Butler 120 High Fair - Other
Lower Main Dam Georgia Floyd 120 High Satisfactory 1993 Hydroelectric
Rosemont Colorado Teller 120 Significant Satisfactory 1961 Water Supply
Continental Colorado Hinsdale 120 High Satisfactory 1927 Irrigation
Hebgen Dam Montana Gallatin 120 High Satisfactory 1915 Hydroelectric
Holt Lock and Dam Alabama Tuscaloosa 120 High Not Available 1968 Navigation
Lake Desmet (South Dam) Wyoming Johnson 120 High Fair 1975 Water Supply
Bluecat Lake Dam Tennessee Maury 120 High Satisfactory 1979
Maple Creek Slurry Pond 1 Pennsylvania Washington 120 High Satisfactory 1973 Other
Cave Creek Arizona Maricopa 120 Low Not Rated 1923 Flood Risk Reduction
Guajataca Dam Puerto Rico Isabela 120 High Poor 1927 Hydroelectric
Matrullas Dam Puerto Rico Orocovis 120 High Unsatisfactory 1934 Hydroelectric
Milton Seaman Colorado Larimer 120 High Satisfactory 1948 Water Supply
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
Cecil M. Harden Dam Indiana Parke 119 High Not Available 1960 Flood Risk Reduction
Lewiston Reservoir Dike New York Niagara 119 High Satisfactory 1963 Hydroelectric
T Or C Site 8c Dam New Mexico Sierra 119 High Fair 1981 Flood Risk Reduction
Wylie South Carolina York 119 High Satisfactory 1925 Hydroelectric
Hobo Ventures Pennsylvania Washington 118 Low Fair -
North Springfield Dam Vermont Windsor 118 High Not Available 1960 Flood Risk Reduction
Settlement Canyon Utah Tooele 118 High Fair 1966 Irrigation
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
Cave Buttes Arizona Maricopa 118 High Satisfactory 1980 Flood Risk Reduction
Dewey Dam Kentucky Floyd 118 High Not Available 1949 Flood Risk Reduction
Elwood Dam Nebraska Gosper 118 High Satisfactory 1976 Irrigation
Villa Park California Orange 118 High Satisfactory 1963 Flood Risk Reduction
Massena Intake New York St. Lawrence 118 High Satisfactory 1958 Hydroelectric
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
Markland Locks and Dam Kentucky Gallatin 118 Significant Not Available 1964 Navigation
Druid Hill Lake Reservoir and Storage Tanks Maryland Baltimore City 118 High Poor 1871 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.