Dams in New York

1,894Total Dams

431High Hazard

556Significant

901Low Hazard

Dam Safety in New York

New York has 1,894 dams tracked in the National Inventory of Dams. Of these, 431 (22%) are classified as high hazard — meaning failure would probably cause loss of human life — and 556 are classified as significant hazard. Currently, 355 dams in the state have a condition assessment of poor or unsatisfactory, indicating recognized safety deficiencies.

The average dam in New York is 89 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 recreation, accounting for 950 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	1,894
High Hazard Dams	431
Average Dam Age	89 years
Tallest Dam	249 ft
Largest Reservoir	2,250,000 acre-ft
Poor/Unsatisfactory Condition	355

Notable Dams in New York

Mount Morris Dam249 ftHigh Ashokan Dam213 ftHigh Downsville Dam204 ftHigh Merriman Dam195 ftHigh Neversink Reservoir Dam190 ftHigh

Explore New York Dams

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Counties in New York

Albany40 dams13 high hazard Allegany17 dams2 high hazard Bronx2 dams1 high hazard Broome62 dams23 high hazard Cattaraugus40 dams12 high hazard Cayuga12 dams2 high hazard Chautauqua24 dams5 high hazard Chemung13 dams8 high hazard Chenango46 dams10 high hazard Clinton22 dams9 high hazard Columbia36 dams2 high hazard Cortland17 dams3 high hazard Delaware55 dams7 high hazard Dutchess80 dams13 high hazard Erie25 dams3 high hazard Essex45 dams2 high hazard Franklin25 dams1 high hazard Fulton29 dams7 high hazard Genesee16 dams Greene28 dams7 high hazard Hamilton26 dams4 high hazard Herkimer42 dams13 high hazard Jefferson35 dams Lewis32 dams5 high hazard Livingston13 dams3 high hazard Madison29 dams6 high hazard Monroe31 dams15 high hazard Montgomery12 dams2 high hazard Nassau6 dams2 high hazard New York1 dams1 high hazard Niagara10 dams6 high hazard Oneida41 dams10 high hazard Onondaga23 dams9 high hazard Ontario10 dams4 high hazard Orange115 dams34 high hazard Orleans15 dams3 high hazard Oswego34 dams7 high hazard Otsego34 dams3 high hazard Putnam62 dams21 high hazard Queens1 dams Rensselaer35 dams10 high hazard Richmond4 dams1 high hazard Rockland32 dams12 high hazard Saratoga37 dams13 high hazard Schenectady9 dams1 high hazard Schoharie31 dams7 high hazard Schuyler10 dams3 high hazard Seneca4 dams2 high hazard St. Lawrence65 dams19 high hazard Steuben35 dams4 high hazard Suffolk15 dams Sullivan132 dams14 high hazard Tioga23 dams5 high hazard Tompkins14 dams4 high hazard Ulster42 dams9 high hazard Warren36 dams8 high hazard Washington26 dams1 high hazard Wayne13 dams2 high hazard Westchester91 dams36 high hazard Wyoming25 dams1 high hazard Yates9 dams1 high hazard

High Hazard Dams in New York

Dam	County	Height	Condition	Purpose
Mount Morris Dam	Livingston	249 ft	Not Available	Flood Risk Reduction
Ashokan Dam	Ulster	213 ft	Satisfactory	Water Supply
Downsville Dam	Delaware	204 ft	Satisfactory	Water Supply
Merriman Dam	Ulster	195 ft	Satisfactory	Water Supply
Neversink Reservoir Dam	Sullivan	190 ft	Satisfactory	Water Supply
Gilboa Dam	Schoharie	183 ft	Satisfactory	Water Supply
Cannonsville Dam	Delaware	175 ft	Satisfactory	Water Supply
New Croton Reservoir Dam	Westchester	174 ft	Satisfactory	Water Supply
Blenheim - Gilboa Upper	Schoharie	170 ft	Satisfactory	Hydroelectric
Kensico Dam	Westchester	168 ft	Satisfactory	Water Supply
Blenheim - Gilboa Lower	Schoharie	165 ft	Satisfactory	Hydroelectric
Lewiston	Niagara	155 ft	Satisfactory	Hydroelectric
Spier Falls	Warren	146 ft	Satisfactory	Hydroelectric
Caneadea Dam	Allegany	140 ft	Fair	Recreation
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
Cross River Dam	Westchester	126 ft	Satisfactory	Water Supply
Inghams Dam	Fulton	125 ft	Poor	Hydroelectric
Massena Intake	St. Lawrence	118 ft	Satisfactory	Hydroelectric
Croton Falls Dam	Putnam	113 ft	Satisfactory	Water Supply
Stewarts Bridge	Saratoga	113 ft	Satisfactory	Hydroelectric
Titicus Dam	Westchester	109 ft	Satisfactory	Water Supply
Sturgeon Pool Dam	Ulster	109 ft	Satisfactory	Hydroelectric
Delta Dam	Oneida	106 ft	Fair	Navigation
Toronto	Sullivan	103 ft	Unsatisfactory	Hydroelectric
Rio	Sullivan	101 ft	Fair	Hydroelectric
Mill River Dam	Westchester	100 ft	Satisfactory	Water Supply
Conklingville	Saratoga	100 ft	Satisfactory	Hydroelectric
Robert Moses - Niagara	Niagara	97 ft	Satisfactory	Hydroelectric
Middle Branch Dam	Putnam	95 ft	Satisfactory	Water Supply
Whitney Point Dam	Broome	95 ft	Not Available	Flood Risk Reduction
Moshier	Herkimer	93 ft	Satisfactory	Hydroelectric
Hillview Reservoir Dam	Westchester	90 ft	Satisfactory	Water Supply
Oak Orchard Creek Dam	Orleans	90 ft	Satisfactory	Hydroelectric
Almond Dam	Steuben	90 ft	Not Available	Flood Risk Reduction
Mill Brook Site 2 Dam	Chenango	87 ft	Poor	Flood Risk Reduction
Amawalk Dam	Westchester	85 ft	Satisfactory	Water Supply
Rome City Dam	Lewis	85 ft	Satisfactory	Water Supply
West Branch Dam	Putnam	85 ft	Satisfactory	Water Supply
Butler Storage Reservoir Dam	Warren	83 ft	Satisfactory	Water Supply
Sleepy Hollow Dam	Greene	83 ft	Satisfactory	Recreation
Hinckley	Herkimer	83 ft	Satisfactory	Hydroelectric
Rainbow	St. Lawrence	82 ft	Satisfactory	Hydroelectric
Alcove Dam	Albany	80 ft	Satisfactory	Water Supply
Fredonia Reservoir Dam	Chautauqua	80 ft	Fair	Water Supply
Blake	St. Lawrence	80 ft	Satisfactory	Hydroelectric
Sherman Island	Warren	80 ft	Satisfactory	Hydroelectric
Boyds Corner Dam	Putnam	78 ft	Fair	Water Supply
Sodom Dam	Putnam	78 ft	Satisfactory	Water Supply
Ilion Reservoir #3 Dam	Herkimer	76 ft	Poor	Water Supply
Brandywine Creek Site 1 Dam	Broome	76 ft	Satisfactory	Flood Risk Reduction
Cargill Reservoir Dam	Putnam	75 ft	Satisfactory	Water Supply
60 Foot Dam	Tompkins	75 ft	Poor	Water Supply
Batavia Kill Watershed Dam #1	Greene	74 ft	Satisfactory	Recreation
Watervliet Upper Dam	Albany	72 ft	Satisfactory	Flood Risk Reduction
Flat Rock	St. Lawrence	72 ft	Satisfactory	Hydroelectric
Newtown Hoffman Site 18 Dam	Chemung	71 ft	Fair	Flood Risk Reduction
Newtown Hoffman Site 12e Dam	Chemung	71 ft	Satisfactory	Flood Risk Reduction
Virgil Creek Watershed Floodwater Dam	Tompkins	70 ft	Satisfactory	Flood Risk Reduction
Browns Falls	St. Lawrence	70 ft	Satisfactory	Hydroelectric
Deruyter Dam	Onondaga	68 ft	Satisfactory	Navigation
Tomhannock Reservoir Dam	Rensselaer	68 ft	Satisfactory	Water Supply
Seneca Falls	Seneca	68 ft	Unsatisfactory	Hydroelectric
Onondaga Dam	Onondaga	67 ft	Satisfactory	Flood Risk Reduction
Nanticoke Creek Site 7a Dam	Broome	67 ft	Satisfactory	Flood Risk Reduction
Glen Creek Dam	Schuyler	65 ft	Fair	Recreation
Ephratah Dam	Fulton	65 ft	Poor	Hydroelectric
Conewango Creek Site 19 Dam	Cattaraugus	65 ft	Fair	Flood Risk Reduction
Silver Lake Reservoir Dam	Richmond	65 ft	Satisfactory	Recreation
East Canada Lake Dam	Herkimer	65 ft	Poor	Hydroelectric
Patterson Brixius Grey Watershed 1 Dam	Broome	65 ft	Satisfactory	Flood Risk Reduction
Carmel Auxiliary Dike	Putnam	64 ft	Satisfactory	Water Supply
Kingsley Brook Reservoir Dam	Madison	63 ft	Fair	Recreation
Beecher Creek Flood Control Dam	Chemung	63 ft	Poor	Flood Risk Reduction
High Falls	Clinton	63 ft	Satisfactory	Hydroelectric
Ischua Creek Watershed Dam #6a	Cattaraugus	63 ft	Fair	Recreation
Batavia Kill Watershed Dam #3	Greene	63 ft	Satisfactory	Flood Risk Reduction
Stillwell	Orange	62 ft	Unsatisfactory	Water Supply
Finch Hollow Site 1 Dam	Broome	62 ft	Satisfactory	Flood Risk Reduction
Mead Reservoir Dam	Clinton	60 ft	Satisfactory	Water Supply
Ilion Reservoir #2 Dam	Herkimer	60 ft	Poor	Water Supply
Dover Greens Dam	Dutchess	60 ft	Fair	Water Supply
Martin Dunham Reservoir Dam	Rensselaer	59 ft	Poor	Recreation
Kents Falls	Clinton	59 ft	Fair	Hydroelectric
Little Choconut Site 2c Dam	Broome	59 ft	Satisfactory	Flood Risk Reduction
Mountain Brook Dam	Putnam	58 ft	Satisfactory	Irrigation
Eaton Brook Reservoir Dam	Madison	58 ft	Poor	Navigation
Little Choconut Site 2e Dam	Broome	58 ft	Satisfactory	Flood Risk Reduction
Nanticoke Creek Site 10 Dam	Broome	58 ft	Satisfactory	Flood Risk Reduction
Colonie Dam	Saratoga	57 ft	Satisfactory	Water Supply
Nanticoke Creek Site 13 Dam	Broome	57 ft	Satisfactory	Flood Risk Reduction
Conewango Creek Site 33 Dam	Chautauqua	57 ft	Fair	Flood Risk Reduction
Batavia Kill Watershed Dam #4a	Greene	57 ft	Satisfactory	Flood Risk Reduction
Finch Hollow Site 2 Dam	Broome	57 ft	Satisfactory	Flood Risk Reduction
Norwich Reservoir #2 Dam	Chenango	56 ft	Fair	Water Supply
Port Creek Reservoir Dam	Fulton	56 ft	Poor	Water Supply
Lake Moraine Dam	Madison	56 ft	Poor	Navigation
Little Choconut Site 2b Dam	Broome	56 ft	Satisfactory	Flood Risk Reduction