Dams in New York — 198 Dams with Hazard Ratings

Dam Safety in New York

New York has 198 dams tracked in the National Inventory of Dams. Of these, 80 (40%) are classified as high hazard — meaning failure would probably cause loss of human life — and 37 are classified as significant hazard. Currently, 19 dams in the state have a condition assessment of poor or unsatisfactory, indicating recognized safety deficiencies.

The average dam in New York is 99 years old. Many of these aging structures were built before modern dam safety standards were established, which increases the importance of regular inspections and maintenance. The most common purpose for dams in New York is hydroelectric, accounting for 168 of the state's dams.

Use the search above to find dams near any address in New York, or browse by county below. Each dam listing includes its hazard potential classification, condition assessment, physical characteristics, and inspection history from the NID.

New York Dam Facts

Total Dams	198
High Hazard Dams	80
Average Dam Age	99 years
Tallest Dam	249 ft
Largest Reservoir	2,250,000 acre-ft
Poor/Unsatisfactory Condition	19

Notable Dams in New York

Mount Morris Dam249 ftHigh Blenheim - Gilboa Upper170 ftHigh Blenheim - Gilboa Lower165 ftHigh Lewiston155 ftHigh Spier Falls146 ftHigh

Counties in New York

High Hazard Dams in New York

Dam	County	Height	Condition	Purpose
Mount Morris Dam	Livingston	249 ft	Not Available	Flood Risk Reduction
Blenheim - Gilboa Upper	Schoharie	170 ft	Satisfactory	Hydroelectric
Blenheim - Gilboa Lower	Schoharie	165 ft	Satisfactory	Hydroelectric
Lewiston	Niagara	155 ft	Satisfactory	Hydroelectric
Spier Falls	Warren	146 ft	Satisfactory	Hydroelectric
Swinging Bridge	Sullivan	135 ft	Fair	Hydroelectric
Long Sault	St. Lawrence	132 ft	Satisfactory	Hydroelectric
Arkport Dam	Steuben	131 ft	Not Available	Flood Risk Reduction
East Sidney Dam	Delaware	130 ft	Not Available	Flood Risk Reduction
Massena Intake	St. Lawrence	118 ft	Satisfactory	Hydroelectric
Stewarts Bridge	Saratoga	113 ft	Satisfactory	Hydroelectric
Sturgeon Pool Dam	Ulster	109 ft	Satisfactory	Hydroelectric
Toronto	Sullivan	103 ft	Unsatisfactory	Hydroelectric
Rio	Sullivan	101 ft	Fair	Hydroelectric
Conklingville	Saratoga	100 ft	Satisfactory	Hydroelectric
Robert Moses - Niagara	Niagara	97 ft	Satisfactory	Hydroelectric
Whitney Point Dam	Broome	95 ft	Not Available	Flood Risk Reduction
Moshier	Herkimer	93 ft	Satisfactory	Hydroelectric
Almond Dam	Steuben	90 ft	Not Available	Flood Risk Reduction
Hinckley	Herkimer	83 ft	Satisfactory	Hydroelectric
Rainbow	St. Lawrence	82 ft	Satisfactory	Hydroelectric
Blake	St. Lawrence	80 ft	Satisfactory	Hydroelectric
Sherman Island	Warren	80 ft	Satisfactory	Hydroelectric
Flat Rock	St. Lawrence	72 ft	Satisfactory	Hydroelectric
Browns Falls	St. Lawrence	70 ft	Satisfactory	Hydroelectric
Seneca Falls	Seneca	68 ft	Unsatisfactory	Hydroelectric
High Falls	Clinton	63 ft	Satisfactory	Hydroelectric
Stillwell	Orange	62 ft	Unsatisfactory	Water Supply
Kents Falls	Clinton	59 ft	Fair	Hydroelectric
Five Falls	St. Lawrence	53 ft	Satisfactory	Hydroelectric
Prospect	Herkimer	52 ft	Satisfactory	Hydroelectric
Groveville	Dutchess	52 ft	Satisfactory	Hydroelectric
Cadyville	Clinton	50 ft	Satisfactory	Hydroelectric
High Falls	Lewis	50 ft	Satisfactory	Hydroelectric
Newton Falls Upper	St. Lawrence	50 ft	Satisfactory	Hydroelectric
Burt Dam	Niagara	49 ft	Satisfactory	Hydroelectric
Lighthouse Hill	Oswego	47 ft	Fair	Hydroelectric
Mongaup	Sullivan	45 ft	Fair	Hydroelectric
Marcy Reservoir #11 Dam	Oneida	44 ft	Not Rated	Water Supply
Schuylerville	Saratoga	43 ft	Fair	Hydroelectric
Honk Falls Dam	Ulster	42 ft	Poor	Recreation
South Colton	St. Lawrence	42 ft	Satisfactory	Hydroelectric
Johnsonville	Rensselaer	39 ft	Satisfactory	Hydroelectric
Normanskill	Albany	39 ft	Fair	Hydroelectric
Higley	St. Lawrence	37 ft	Satisfactory	Hydroelectric
Allens Falls	St. Lawrence	37 ft	Satisfactory	Hydroelectric
Cliff Lake	Sullivan	36 ft	Satisfactory	Hydroelectric
Bennetts Bridge	Oswego	35 ft	Fair	Hydroelectric
Colliersville	Otsego	35 ft	Fair	Hydroelectric
Lake Frederick	Orange	35 ft	Poor	Recreation
High Dam	Oswego	35 ft	Fair	Hydroelectric
Popolopen Lake	Orange	32 ft	Poor	Water Supply
Vischer Ferry	Saratoga	30 ft	Satisfactory	Hydroelectric
Lusk Reservior	Orange	30 ft	Poor	Water Supply
Colton	St. Lawrence	29 ft	Satisfactory	Hydroelectric
Lake George Outlet - Canal Intake	Essex	28 ft	Satisfactory	Hydroelectric
Forestport	Oneida	27 ft	Satisfactory	Hydroelectric
Upper Beaver Falls	Lewis	27 ft	Satisfactory	Hydroelectric
Effley Intake	Lewis	26 ft	Satisfactory	Hydroelectric
Rainbow Lake Dam	Hamilton	25 ft	Poor	Recreation
Long Sault North	St. Lawrence	25 ft	Satisfactory	Hydroelectric
Mill Street Dam	Cayuga	25 ft	Satisfactory	Hydroelectric
Nuclear Lake Dam	Dutchess	24 ft	Not Available	Recreation
Union Falls	Clinton	24 ft	Satisfactory	Hydroelectric
Norwood	St. Lawrence	24 ft	Fair	Hydroelectric
Minetto Lock & Dam 5	Oswego	23 ft	Fair	Hydroelectric
Piercefield	St. Lawrence	22 ft	Satisfactory	Hydroelectric
Lake Jefferson	Sullivan	22 ft	Unsatisfactory	Hydroelectric
Wappingers Falls	Dutchess	20 ft	Satisfactory	Hydroelectric
Kayuta	Oneida	19 ft	Satisfactory	Hydroelectric
Lake Flower	Franklin	19 ft	Satisfactory	Hydroelectric
Delafield Pond	Orange	18 ft	Unsatisfactory	Recreation
Waterloo	Seneca	17 ft	Satisfactory	Hydroelectric
East Norfolk	St. Lawrence	16 ft	Satisfactory	Hydroelectric
Alder Pond	Oneida	15 ft	Satisfactory	Hydroelectric
Bennetts Bridge - Dike B	Oswego	13 ft	Satisfactory	Hydroelectric
Ogdensburg	St. Lawrence	12 ft	Satisfactory	Hydroelectric
Bennetts Bridge - Dike C	Oswego	10 ft	Satisfactory	Hydroelectric
Lower Cragston Lake	Orange	10 ft	Unsatisfactory	Recreation
Waterbury Roadway Embankment	Oswego	5 ft	Satisfactory	Hydroelectric