Browse Dams

1,071 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,071 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
Mossyrock	Washington	Lewis	606	High	Unsatisfactory	1968	Hydroelectric
Mayfield	Washington	Lewis	250	High	Unsatisfactory	1963	Hydroelectric
Anderson	California	Santa Clara	240	High	Unsatisfactory	1950	Water Supply
Smith	Oregon	Linn	235	High	Unsatisfactory	1963	Hydroelectric
Fletcher Tailings Dam	Missouri	Reynolds	201	High	Unsatisfactory	1965	Tailings
Garzas Dam	Puerto Rico	Adjuntas	201	High	Unsatisfactory	1943	Hydroelectric
Liberty Dam	Maryland	Baltimore	175	High	Unsatisfactory	1953	Water Supply
Sanchez	Colorado	Costilla	137	High	Unsatisfactory	1911	Irrigation
Laprele	Wyoming	Converse	135	High	Unsatisfactory	1909	Irrigation
Lake Hodges	California	San Diego	131	High	Unsatisfactory	1918	Water Supply
Paradise Peak Tails Dam	Nevada	Nye	130	Low	Unsatisfactory	1986	Tailings
Magic Dam	Idaho	Blaine	128	High	Unsatisfactory	1910	Hydroelectric
Cat Creek	Nevada	Mineral	123	High	Unsatisfactory	1932	Water Supply
Matrullas Dam	Puerto Rico	Orocovis	120	High	Unsatisfactory	1934	Hydroelectric
Hosler (Reeder Gulch	Oregon	Jackson	114	High	Unsatisfactory	1928	Water Supply
Narraguinnep - Main Dam	Colorado	Montezuma	114	High	Unsatisfactory	1908	Irrigation
Puu Lua Reservoir		Kauai	110	High	Unsatisfactory	1925	Fish and Wildlife Pond
Willow Creek 3 (Malheur)	Oregon	Malheur	110	High	Unsatisfactory	1944	Irrigation
Clear Branch	Oregon	Hood River	110	High	Unsatisfactory	1969	Irrigation
Toronto	New York	Sullivan	103	High	Unsatisfactory	1926	Hydroelectric
West Newton Sludge	Pennsylvania	Westmoreland	99	Low	Unsatisfactory	—	Other
Cliffside Inactive Ash Basin #5 Main Dam	North Carolina	Rutherford	97	High	Unsatisfactory	1972	Other
Lake Ellsworth	Oklahoma	Comanche	96	High	Unsatisfactory	1961	Water Supply
Williamson Dam	Texas	Eastland	96	High	Unsatisfactory	1923	Water Supply
Woodrat Knob	Oregon	Jackson	92	High	Unsatisfactory	1960	Irrigation
Livingston	Texas	San Jacinto	90	High	Unsatisfactory	1969	Hydroelectric
Trail Bridge	Oregon	Linn	90	High	Unsatisfactory	1963	Hydroelectric
Ku Tree Reservoir	Hawaii	Honolulu	90	High	Unsatisfactory	1925	Other
Crowley	Oregon	Malheur	90	High	Unsatisfactory	1938	Irrigation
Stillwater #1	Colorado	Garfield	89	High	Unsatisfactory	1939	Irrigation
Miramonte	Colorado	San Miguel	87	High	Unsatisfactory	1978	Recreation
Gun Club Lake Dam	Missouri	Washington	85	High	Unsatisfactory	1962	Tailings
Bishop Creek Dam	Nevada	Elko	80	High	Unsatisfactory	1912	Irrigation
Cataract Creek Dam	Montana	Madison	80	High	Unsatisfactory	1959	Irrigation
Spring Creek	Colorado	Gunnison	76	High	Unsatisfactory	1961	Recreation
Black Lake	Montana	Missoula	75	High	Unsatisfactory	1967	Recreation
Lake Comanche Dam	Texas	Comanche	74	High	Unsatisfactory	1948	Irrigation
Upper Little Black D-2	Missouri	Ripley	73	High	Unsatisfactory	1989	Flood Risk Reduction
Rapidan	Minnesota	Blue Earth	73	Significant	Unsatisfactory	1910	Hydroelectric
Piney Run Dam	Maryland	Carroll	73	High	Unsatisfactory	1974	Water Supply
Sheriff	Colorado	Rio Blanco	72	High	Unsatisfactory	1955	Irrigation
Goose Pasture Tarn	Colorado	Summit	71	High	Unsatisfactory	1965	Recreation
Frog Lake Dam B	Oregon	Clackamas	70	Significant	Unsatisfactory	1955	Hydroelectric
Gooseberry Tails Dam	Nevada	Storey	70	Low	Unsatisfactory	1984	Tailings
Tarryall	Colorado	Park	70	High	Unsatisfactory	1929	Recreation
Koolau Reservoir	Hawaii	Honolulu	70	Low	Unsatisfactory	1919	Other
Big Bone Lick State Park Dam	Kentucky	Boone	70	Low	Unsatisfactory	1971	Recreation
Mud River MPS 6A	Kentucky	Logan	69	Significant	Unsatisfactory	1973	Flood Risk Reduction
Lake Waukomis Dam	Missouri	Platte	68	High	Unsatisfactory	1968	Recreation
Intrepid Potash West Plant Dam	New Mexico	Eddy	68	Significant	Unsatisfactory	1978	Tailings

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.