Water Supply Dams in New York

New York has 234 water supply dams, of which 111 carry a high hazard classification. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area.

#	Dam	County	Height (ft)	Hazard	Condition	Year
1	Ashokan Dam	Ulster	213	High	Satisfactory	1916
2	Downsville Dam	Delaware	204	High	Satisfactory	1954
3	Merriman Dam	Ulster	195	High	Satisfactory	1945
4	Neversink Reservoir Dam	Sullivan	190	High	Satisfactory	1953
5	Gilboa Dam	Schoharie	183	High	Satisfactory	1926
6	Cannonsville Dam	Delaware	175	High	Satisfactory	1964
7	New Croton Reservoir Dam	Westchester	174	High	Satisfactory	1906
8	Kensico Dam	Westchester	168	High	Satisfactory	1916
9	Cross River Dam	Westchester	126	High	Satisfactory	1908
10	Croton Falls Dam	Putnam	113	High	Satisfactory	1910
11	Titicus Dam	Westchester	109	High	Satisfactory	1895
12	Mill River Dam	Westchester	100	High	Satisfactory	1966
13	Nys Atomic Development Dam #1	Cattaraugus	95	Low	Not Rated	1963
14	Middle Branch Dam	Putnam	95	High	Satisfactory	1878
15	Hillview Reservoir Dam	Westchester	90	High	Satisfactory	1915
16	Rome City Dam	Lewis	85	High	Satisfactory	1958
17	West Branch Dam	Putnam	85	High	Satisfactory	1895
18	Amawalk Dam	Westchester	85	High	Satisfactory	1897
19	Butler Storage Reservoir Dam	Warren	83	High	Satisfactory	1909
20	Alcove Dam	Albany	80	High	Satisfactory	1929
21	Fredonia Reservoir Dam	Chautauqua	80	High	Fair	1937
22	Boyds Corner Dam	Putnam	78	High	Fair	1872
23	Sodom Dam	Putnam	78	High	Satisfactory	1892
24	Sidney Reservoir #5 Dam	Delaware	77	Significant	Poor	1936
25	Ilion Reservoir #3 Dam	Herkimer	76	High	Poor	1921
26	Cargill Reservoir Dam	Putnam	75	High	Satisfactory	1931
27	60 Foot Dam	Tompkins	75	High	Poor	1911
28	Hornell Reservoir #3 Dam	Steuben	71	Low	Not Rated	1931
29	Tomhannock Reservoir Dam	Rensselaer	68	High	Satisfactory	1905
30	Carmel Auxiliary Dike	Putnam	64	High	Satisfactory	1895
31	Steele Reservoir Dam	Saratoga	64	Significant	Satisfactory	1907
32	Stillwell	Orange	62	High	Unsatisfactory	1948
33	Mead Reservoir Dam	Clinton	60	High	Satisfactory	1922
34	Dover Greens Dam	Dutchess	60	High	Fair	1918
35	Ilion Reservoir #2 Dam	Herkimer	60	High	Poor	1903
36	Colonie Dam	Saratoga	57	High	Satisfactory	1954
37	Muscoot Dam	Westchester	57	Significant	Not Rated	1906
38	Norwich Reservoir #2 Dam	Chenango	56	High	Fair	1890
39	Port Creek Reservoir Dam	Fulton	56	High	Poor	1930
40	Utica Reservoir #4 Dam	Oneida	55	High	Satisfactory	1886
41	Diverting Reservoir Dam	Putnam	54	High	Satisfactory	1911
42	Dansville Reservoir Dam	Steuben	54	High	Satisfactory	1937
43	Waverly Lower Reservoir Dam	Tioga	54	High	Poor	1880
44	Brocton Reservoir Dam	Chautauqua	52	High	Fair	1952
45	Melzingah Dam	Dutchess	51	High	Poor	1924
46	Brookside Reservoir Dam	Montgomery	50	High	Satisfactory	1882
47	Deerfield Reservoir #6 Dam	Oneida	50	High	Satisfactory	1900
48	Oneida City Reservoir Dam	Oneida	50	High	Poor	1926
49	Trinity Dam	Westchester	50	High	Satisfactory	1966
50	Cork Center Storage Reservoir Dam	Fulton	49	High	Fair	1919
51	Hornell Reservoir #1 Dam	Steuben	48	Low	Not Rated	1936
52	Browns Reservoir Dam	Westchester	48	High	Satisfactory	1924
53	Norwich Reservoir #1 Dam	Chenango	47	High	Fair	1881
54	Bog Brook Dam #1	Putnam	47	High	Satisfactory	1893
55	Ripley Reservoir Dam	Chautauqua	46	Significant	Poor	1950
56	First Reservoir Dam	Rockland	46	High	Poor	1917
57	Nys Atomic Development Dam #2	Cattaraugus	45	Low	Not Rated	1963
58	Minton Dam	Chautauqua	45	Low	Not Rated	1936
59	Akron Reservoir Dam	Genesee	45	Significant	Not Rated	1927
60	Frankfort Reservoir Dam	Herkimer	45	Significant	Poor	1908
61	Lower (south) Wiccopee Dam	Putnam	45	High	Poor	1913
62	Lake Lagrange Dam	Wyoming	45	Low	Not Rated	1961
63	Marcy Reservoir #11 Dam	Oneida	44	High	Not Rated	1915
64	Indian Brook Reservoir Dam	Westchester	43	High	Satisfactory	1889
65	Jerome Park Reservoir Dam	Bronx	42	High	Satisfactory	1906
66	Little Falls Reservoir Dam	Herkimer	42	Significant	Satisfactory	1901
67	Stillwater Pond Dam	Putnam	42	Low	Not Rated	1939
68	Waterville Upper Storage Reservoir Dam	Oneida	41	Significant	Not Rated	1953
69	Port Jervis Reservoir #2 Dam	Orange	41	High	Fair	1880
70	Vly Creek Reservoir Dike	Albany	40	High	Satisfactory	1957
71	Canajoharie Reservoir Dam	Fulton	40	Significant	Poor	1948
72	Ilion Reservoir #1 Dam	Herkimer	40	High	Poor	1895
73	Upper Warwick Dam	Orange	40	Low	Fair	1912
74	Lake Deforest Dam	Rockland	40	High	Satisfactory	1956
75	Cooper Lake Dam And West Dike	Ulster	40	High	Satisfactory	1800
76	New Central Park Receiving Res Dam	New York	38	High	Satisfactory	1862
77	Village Of Cobleskill Holding Pond Dam	Schoharie	38	High	Satisfactory	1986
78	Attica Reservoir Dam (middle)	Wyoming	38	Significant	Not Rated	1925
79	Altamont Main Reservoir Dam	Albany	37	High	Poor	1898
80	Churchtown Dam	Columbia	37	High	Satisfactory	1904
81	Potuck Reservoir Dam	Greene	37	High	Satisfactory	1930
82	Goshen Reservoir #1 Dam	Orange	37	High	Poor	1963
83	Hoffman Creek Dam	Chemung	36	High	Poor	1871
84	Woodland Reservoir Dam	Onondaga	36	High	Satisfactory	1894
85	Silver Stream Reservoir Dam	Orange	36	High	Satisfactory	1923
86	Silver Creek Reservoir Dam	Chautauqua	35	Significant	Not Rated	1925
87	Sherburne Upper Reservoir Dam	Chenango	35	Low	Poor	1917
88	Mount Beacon Reservoir Dam	Dutchess	35	High	Satisfactory	1922
89	Livonia Reservoir Dam	Livingston	35	Low	Not Rated	1926
90	Jamesville Water District Dam	Onondaga	35	Low	Not Rated	1927
91	Port Jervis Reservoir #3 Dam	Orange	35	High	Fair	1900
92	Middle Warwick Dam	Orange	35	Low	Fair	1912
93	Town Of Mt. Pleasant Water District #1 Dam	Westchester	35	Significant	Not Rated	1915
94	White Plains Reservoir #2 Dam	Westchester	35	High	Satisfactory	1907
95	Utica Reservoir #5 Dam	Oneida	34	High	Poor	1896
96	Upper (north) Wiccopee Dam	Putnam	34	High	Satisfactory	1939
97	Wilkie Reservoir Dam	Warren	34	High	Satisfactory	1914
98	Wilkie Intake Reservoir Dam	Warren	34	Significant	Satisfactory	1914
99	Rice Reservoir Dam	Fulton	33	Significant	Satisfactory	1882
100	Cornwall Upper Reservoir Dam	Orange	33	High	Satisfactory	1912

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