Tallest Dams in New York

New York has 1894 dams with recorded heights. The tallest is Mount Morris Dam at 249 feet. Taller dams impound more water and carry greater potential energy, which is why height is a key factor in hazard classification and inspection requirements.

#	Dam	County	Height (ft)	Type	Purpose	Hazard	Year
1	Mount Morris Dam	Livingston	249	Concrete	Flood Risk Reduction	High	1952
2	Ashokan Dam	Ulster	213	Earth	Water Supply	High	1916
3	Downsville Dam	Delaware	204	Earth	Water Supply	High	1954
4	Merriman Dam	Ulster	195	Earth	Water Supply	High	1945
5	Neversink Reservoir Dam	Sullivan	190	Earth	Water Supply	High	1953
6	Gilboa Dam	Schoharie	183	Concrete	Water Supply	High	1926
7	Cannonsville Dam	Delaware	175	Earth	Water Supply	High	1964
8	New Croton Reservoir Dam	Westchester	174	Concrete	Water Supply	High	1906
9	Blenheim - Gilboa Upper	Schoharie	170	Earth	Hydroelectric	High	1974
10	Kensico Dam	Westchester	168	Concrete	Water Supply	High	1916
11	Blenheim - Gilboa Lower	Schoharie	165	Earth	Hydroelectric	High	1974
12	Lewiston	Niagara	155	Concrete	Hydroelectric	High	1963
13	Spier Falls	Warren	146	Masonry	Hydroelectric	High	1903
14	Caneadea Dam	Allegany	140	Concrete	Recreation	High	1929
15	Swinging Bridge	Sullivan	135	Other	Hydroelectric	High	1930
16	Long Sault	St. Lawrence	132	Concrete	Hydroelectric	High	1958
17	Arkport Dam	Steuben	131	Earth	Flood Risk Reduction	High	1940
18	East Sidney Dam	Delaware	130	Gravity	Flood Risk Reduction	High	1950
19	Cross River Dam	Westchester	126	Concrete	Water Supply	High	1908
20	Inghams Dam	Fulton	125	Concrete	Hydroelectric	High	1911
21	Massena Intake	St. Lawrence	118	Concrete	Hydroelectric	High	1958
22	Croton Falls Dam	Putnam	113	Masonry	Water Supply	High	1910
23	Stewarts Bridge	Saratoga	113	Concrete	Hydroelectric	High	1952
24	Sturgeon Pool Dam	Ulster	109	Concrete	Hydroelectric	High	1922
25	Titicus Dam	Westchester	109	Earth	Water Supply	High	1895
26	Windsor Park Dam	Erie	106	Other	Other	Low	2006
27	Delta Dam	Oneida	106	Concrete	Navigation	High	1912
28	Toronto	Sullivan	103	Other	Hydroelectric	High	1926
29	Rio	Sullivan	101	Gravity	Hydroelectric	High	1927
30	Conklingville	Saratoga	100	Earth	Hydroelectric	High	1930
31	Chaumont Swamp Dam	St. Lawrence	100	Earth	Irrigation	Low	1954
32	Mill River Dam	Westchester	100	Earth	Water Supply	High	1966
33	Robert Moses - Niagara	Niagara	97	Concrete	Hydroelectric	High	1963
34	Whitney Point Dam	Broome	95	Earth	Flood Risk Reduction	High	1942
35	Nys Atomic Development Dam #1	Cattaraugus	95	Earth	Water Supply	Low	1963
36	Middle Branch Dam	Putnam	95	Earth	Water Supply	High	1878
37	Moshier	Herkimer	93	Earth	Hydroelectric	High	1930
38	Oak Orchard Creek Dam	Orleans	90	Concrete	Hydroelectric	High	1917
39	Almond Dam	Steuben	90	Earth	Flood Risk Reduction	High	1949
40	Hillview Reservoir Dam	Westchester	90	Earth	Water Supply	High	1915
41	Mill Brook Site 2 Dam	Chenango	87	Earth	Flood Risk Reduction	High	1986
42	Rome City Dam	Lewis	85	Concrete	Water Supply	High	1958
43	West Branch Dam	Putnam	85	Earth	Water Supply	High	1895
44	Amawalk Dam	Westchester	85	Earth	Water Supply	High	1897
45	Sleepy Hollow Dam	Greene	83	Earth	Recreation	High	1972
46	Hinckley	Herkimer	83	Earth	Hydroelectric	High	1914
47	Butler Storage Reservoir Dam	Warren	83	Earth	Water Supply	High	1909
48	Rainbow	St. Lawrence	82	Gravity	Hydroelectric	High	1956
49	Alcove Dam	Albany	80	Earth	Water Supply	High	1929
50	Fredonia Reservoir Dam	Chautauqua	80	Earth	Water Supply	High	1937

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