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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
Mayflower Pond # 5 Colorado Summit 237 High Not Available — Tailings
Smith Mountain Combination Pump Storage Virginia Pittsylvania 237 High Satisfactory 1964 Hydroelectric
Cheoah North Carolina Graham 236 High Satisfactory 1919 Hydroelectric
Caonillas Dam Puerto Rico Jayuya 235 High Satisfactory 1948 Hydroelectric
#1 Tailings Pond Colorado Eagle 235 Significant Not Available — Tailings
Twelvepole Refuse Impoundment West Virginia Mingo 235 High Not Available — Tailings
Robinson Tailing Pond #1dam Colorado Summit 235 High Not Available — Other
Howard A. Hanson Dam Washington King 235 High Not Available 1962 Flood Risk Reduction
Smith Oregon Linn 235 High Unsatisfactory 1963 Hydroelectric
Conchas Dam New Mexico San Miguel 235 High Not Available 1940 Flood Risk Reduction
Saluda South Carolina Lexington 234 High Satisfactory 1930 Hydroelectric
Tygart Dam West Virginia Taylor 234 High Not Available 1938 Flood Risk Reduction
Los Vaqueros California Contra Costa 231 High Satisfactory 1997 Water Supply
Buford Dam Georgia Gwinnett 231 High Not Available 1958 Flood Risk Reduction
L. L. Anderson California Placer 231 High Satisfactory 1965 Irrigation
Peters California Marin 230 High Satisfactory 1954 Water Supply
John Day Lock and Dam Oregon Klickitat 230 High Not Available 1968 Navigation
Simplot Phosphates Tailings Dam Utah Uintah 230 Significant Not Rated 1973
Calderwood Tennessee Blount 230 High Satisfactory 1930 Hydroelectric
Masonry Dam Washington King 230 High Satisfactory 1914 Hydroelectric
Chino Mines Tailings Dam No. 7 New Mexico Grant 230 High Satisfactory 1988 Tailings
Chief Joseph Dam Washington Douglas 230 High Not Available 1955 Hydroelectric
Horsetooth-Soldier Canyon Colorado Larimer 230 High Not Available 1949 Irrigation
El Vado Dam New Mexico Rio Arriba 230 High Not Available 1935 Irrigation
Raccoon Mountain Dam Tennessee Marion 230 High Not Available 1978 Hydroelectric
Trampas Canyon California Orange 229 High Satisfactory 1975 Other
Pacificorp - Electric Lake Utah Emery 229 High Satisfactory 1974 Water Supply
Beaver Dam - Saddle Dike 3 Arkansas Carroll 229 High Not Available 1963 Flood Risk Reduction
Pit No. 7 Diversion California Shasta 228 High Satisfactory 1965 Hydroelectric
Sanford Dam Texas Hutchinson 228 High Not Available 1965 Recreation
Beaver Dam Arkansas Carroll 228 High Not Available 1963 Flood Risk Reduction
Ramona California San Diego 228 High Satisfactory 1988 Water Supply
Lower Granite Lock and Dam Washington Whitman 228 High Not Available 1975 Navigation
Rollins California Nevada 228 High Satisfactory 1965 Water Supply
Solutia #15 Dam Tennessee Maury 227 Low Satisfactory 1977
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
Indian Valley California Lake 225 High Fair 1975 Irrigation
Broken Bow Dam Oklahoma McCurtain 225 High Not Available 1968 Flood Risk Reduction
Silver Basin 1 Arizona Graham 225 Significant Not Available — Tailings
Long Lake Washington Stevens 225 High Fair 1915 Hydroelectric
Horsetooth-Spring Canyon Colorado Larimer 225 High Not Available 1949 Irrigation
Broken Bow Dam - Reregulation Dam Oklahoma McCurtain 225 Low Not Available 1968 Flood Risk Reduction
Raystown Dam Pennsylvania Huntingdon 225 High Not Available 1973 Flood Risk Reduction
Big Santa Anita California Los Angeles 225 High Satisfactory 1927 Flood Risk Reduction
Canyon Ferry Dam Montana Lewis and Clark 225 High Not Available 1954 Flood Risk Reduction
Salmon Falls Idaho Twin Falls 224 High Fair 1911 Other
Little Dell Utah Salt Lake 224 High Satisfactory 1993 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.