Water Supply Dams in Connecticut

Connecticut has 179 water supply dams, of which 91 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	Saville Dam	Litchfield	137	High	Satisfactory	1940
2	Easton Reservoir Dam	Fairfield	123	High	Fair	1926
3	Lake Gaillard Dam	New Haven	118	High	Satisfactory	1929
4	Lake Watrous Dam	New Haven	116	High	Satisfactory	1915
5	John D. Milne Lake Dam	Fairfield	105	High	Fair	1947
6	Lake Chamberlain Dam	New Haven	93	High	Satisfactory	1890
7	Upper Shepaug Dam	Litchfield	90	High	Satisfactory	1965
8	Pitch Reservoir Dam	Litchfield	85	High	Satisfactory	1944
9	Reuben Hart Reservoir Dam	Litchfield	80	High	Satisfactory	1933
10	Long Hill Reservoir Dam	New Haven	80	High	Satisfactory	1914
11	Hemlock Reservoir Dam	Fairfield	75	High	Fair	1914
12	Samuel Bargh Reservoir Dam	Fairfield	75	High	Satisfactory	1955
13	Wigwam Reservoir Dam	Litchfield	75	Significant	Satisfactory	1893
14	Compensating Reservoir Dam	Litchfield	75	High	Fair	1920
15	Lake Glen Dam	New Haven	72	High	Satisfactory	1907
16	Morris Reservoir Dam	Litchfield	70	High	Satisfactory	1910
17	Mulberry Reservoir Dam	New Haven	66	High	Satisfactory	1897
18	Lake Bethany Dam	New Haven	66	High	Satisfactory	1892
19	Shepaug Reservoir Dam	Litchfield	65	High	Satisfactory	1933
20	Hammonasset Dam	New Haven	63	High	Satisfactory	1956
21	Deep River Reservoir Dam	New London	62	High	Satisfactory	1926
22	Menunkatuck Reservoir Dam	New Haven	61	High	Satisfactory	1929
23	Bristol Reservoir #5 Dam	Litchfield	60	High	Satisfactory	1932
24	Lake Dawson Dam	New Haven	60	High	Satisfactory	1890
25	Whigville Reservoir Dam	Hartford	58	High	Satisfactory	1909
26	Nepaug East Dike	Hartford	57	High	Satisfactory	1916
27	Moody Reservoir Dam	New Haven	56	High	Satisfactory	1900
28	Means Brook Reservoir Dam	Fairfield	54	High	Satisfactory	1917
29	Laurel Reservoir Dam	Fairfield	50	High	Satisfactory	1923
30	Wasel Reservoir Dike	Hartford	50	High	Satisfactory	1966
31	Trap Falls Reservoir Dam	Fairfield	48	High	Fair	1905
32	Shuttle Meadow Reservoir Dam	Hartford	48	High	Satisfactory	1894
33	East Lake Reservoir Dam	Fairfield	47	High	Satisfactory	1855
34	Hartford Reservoir #1 Dam	Hartford	46	High	Poor	1868
35	Killingworth Reservoir Dam	Middlesex	46	High	Satisfactory	1895
36	Hallmere Reservoir Dam	Hartford	45	High	Satisfactory	1897
37	Maltby #2 Dam	New Haven	45	Significant	Satisfactory	1862
38	Morgan Pond Dam	New London	45	Significant	Satisfactory	1966
39	New Canaan Reservoir Dam	Fairfield	44	High	Satisfactory	1898
40	Howard Reservoir Dam	Hartford	44	High	Satisfactory	1902
41	Lake Whitney Dam	New Haven	44	High	Poor	1861
42	West Lake Reservoir Dam	Fairfield	42	High	Satisfactory	1906
43	Seymour Reservoir #3 Dam	New Haven	42	Significant	Fair	1910
44	Peat Swamp Reservoir Dam	New Haven	41	High	Poor	1925
45	North Stamford Reservoir Dam	Fairfield	40	High	Fair	1908
46	Globe Hollow Reservoir Dam	Hartford	40	Significant	Fair	1906
47	Bristol Reservoir #4 Dam	Litchfield	40	Significant	Satisfactory	1906
48	Broad Brook Reservoir Dam	New Haven	40	High	Fair	1913
49	Stony Brook Reservoir Dam	New London	40	Significant	Fair	1912
50	Kenmere Reservoir Dam	Hartford	38	High	Satisfactory	1898
51	Southington Reservoir #2 Dam	New Haven	38	Significant	Satisfactory	1900
52	Shepards Pond Dam	Windham	38	Significant	Satisfactory	1890
53	Rock Lake Dam	Fairfield	37	Significant	Satisfactory	1875
54	Maltby No. 1 Dam	New Haven	37	High	Satisfactory	1862
55	Popps Mountain Dike	Fairfield	36	High	Satisfactory	1941
56	Crystal Lake Dam	Litchfield	36	Significant	Fair	1878
57	Putnam Reservoir Dam	Fairfield	35	High	Satisfactory	1910
58	Asylum Reservoir #2 Dam	Middlesex	35	Significant	Fair
59	Middle Reservoir Dam	New Haven	35	Significant	Satisfactory	1890
60	Stone Hill Reservoir Dam	New London	35	Significant	Satisfactory	1894
61	Bronson E. Lockwood Dam	Litchfield	34	High	Satisfactory	1958
62	Lake Saltonstall Dam	New Haven	34	High	Satisfactory	1882
63	Mystic Reservoir Dam	New London	34	High	Satisfactory	1880
64	Bristol Reservoir #2 Dam	Litchfield	33	Significant	Satisfactory	1889
65	Bushy Hill Pond Dam	Middlesex	33	High	Satisfactory	1871
66	Porter Reservoir Dam	Hartford	32	Significant	Satisfactory	1902
67	Hartford Reservoir #2 Dam	Hartford	32	High	Satisfactory	1869
68	Mianus Filter Plant Dam	Fairfield	31	High	Fair	1875
69	Lake Wintergreen Dam	New Haven	31	High	Satisfactory	1863
70	Seymour Reservoir #2 Dam	New Haven	31	Significant	Fair	1948
71	Mad River Dam Homestead Avenue Dam	New Haven	31	High	Poor	1900
72	Upper Kohanza Lake Dam	Fairfield	30	High	Satisfactory	1866
73	Old Marsh Pond Dam	Litchfield	30	High	Satisfactory	1913
74	Mount Higby Reservoir Dam	Middlesex	30	High	Satisfactory	1897
75	Asylum Reservoir #4 Dam	Middlesex	30	Significant	Satisfactory
76	Taftville Reservoir #2 Dam	New London	30	Significant	Poor	1910
77	Baltic Reservoir Dam (west)	New London	30	Significant	Satisfactory	1900
78	Fairview Reservoir Dam And Dikes	New London	30	High	Satisfactory	1868
79	Chestnut Ridge Dam	Fairfield	29	High	Fair	1910
80	Padanaram Reservoir Dam	Fairfield	29	High	Satisfactory	1883
81	New Britain Reservoir Dike	Hartford	29	High	Satisfactory	1904
82	Mackenzie Reservoir Dam	New Haven	29	High	Fair	1944
83	Maltby Lake West Dam #3	New Haven	29	Significant	Satisfactory	1862
84	Willimantic Reservoir Dam	Windham	29	High	Satisfactory	1885
85	Portland Reservoir Dam	Middlesex	28	High	Satisfactory	1964
86	Adder Reservoir	Middlesex	28	High	Fair	1934
87	Deep Hollow Reservoir Dam	Middlesex	28	Significant	Satisfactory	1854
88	Asylum Reservoir Dam #6	Middlesex	28	Significant	Fair	1954
89	Seymour Reservoir #4 Dam	New Haven	28	Significant	Poor	1951
90	Paper Mill Pond Dam	New London	28	Significant	Poor	1870
91	Stafford Reservoir #2 Dam	Tolland	28	Significant	Satisfactory	1966
92	Risley Reservoir Dam (no Longer Using 14605)	Tolland	28	Significant	Fair	1853
93	Merimere Reservoir Dike (dam Is 705)	New Haven	27	High	Fair	1870
94	Risdon Pond Dam	New Haven	27	Significant	Unsatisfactory	1890
95	Shenipsit Lake Dam	Tolland	27	High	Satisfactory	1903
96	Seymour Reservoir #1 Dam	New Haven	26	Significant	Fair	1898
97	Lower Kohanza Lake Dam	Fairfield	25	High	Satisfactory	1860
98	Bristol Reservoir #1 Dam	Hartford	25	High	Satisfactory	1885
99	Straitsville Reservoir Dam	New Haven	25	Significant	Fair	1900
100	Grupes Reservoir Dam	Fairfield	24	High	Poor	1871

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