Tallest Dams in Connecticut

Connecticut has 1212 dams with recorded heights. The tallest is Mad River Flood Control Dam at 178 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	Mad River Flood Control Dam	Litchfield	178	Earth	Flood Risk Reduction	High	1963
2	Shepaug	New Haven	138	Concrete	Hydroelectric	High	1955
3	Saville Dam	Litchfield	137	Earth	Water Supply	High	1940
4	Thomaston Dam	Litchfield	137	Rockfill	Flood Risk Reduction	High	1960
5	Black Rock Dam	Litchfield	130	Rockfill	Flood Risk Reduction	High	1971
6	Goodwin	Hartford	125	Earth	Hydroelectric	High	1960
7	Easton Reservoir Dam	Fairfield	123	Concrete	Water Supply	High	1926
8	Lake Gaillard Dam	New Haven	118	Concrete	Water Supply	High	1929
9	Lake Watrous Dam	New Haven	116	Earth	Water Supply	High	1915
10	Northfield Brook Dam	Litchfield	111	Gravity	Flood Risk Reduction	High	1965
11	John D. Milne Lake Dam	Fairfield	105	Concrete	Water Supply	High	1947
12	Stevenson	Fairfield	103	Concrete	Hydroelectric	High	1919
13	Lake Chamberlain Dam	New Haven	93	Earth	Water Supply	High	1890
14	East Branch Flood Control Dam	Litchfield	92	Earth	Flood Risk Reduction	High
15	Upper Shepaug Dam	Litchfield	90	Earth	Water Supply	High	1965
16	Pitch Reservoir Dam	Litchfield	85	Earth	Water Supply	High	1944
17	Whiting River Flood Control Dam	Litchfield	80	Earth	Flood Risk Reduction	High	1968
18	Reuben Hart Reservoir Dam	Litchfield	80	Earth	Water Supply	High	1933
19	Long Hill Reservoir Dam	New Haven	80	Earth	Water Supply	High	1914
20	Mansfield Hollow Dam - Dike C	Tolland	78	Gravity	Flood Risk Reduction	High	1952
21	Hemlock Reservoir Dam	Fairfield	75	Earth	Water Supply	High	1914
22	Samuel Bargh Reservoir Dam	Fairfield	75	Earth	Water Supply	High	1955
23	Wigwam Reservoir Dam	Litchfield	75	Concrete	Water Supply	Significant	1893
24	Hall Meadow Brook Flood Control Dam	Litchfield	75	Earth	Flood Risk Reduction	High	1962
25	Compensating Reservoir Dam	Litchfield	75	Earth	Water Supply	High	1920
26	Lake Glen Dam	New Haven	72	Concrete	Water Supply	High	1907
27	Morris Reservoir Dam	Litchfield	70	Earth	Water Supply	High	1910
28	Sucker Brook Flood Control Dam	Litchfield	68		Flood Risk Reduction	High	1970
29	Mulberry Reservoir Dam	New Haven	66	Earth	Water Supply	High	1897
30	Lake Bethany Dam	New Haven	66	Masonry	Water Supply	High	1892
31	Shepaug Reservoir Dam	Litchfield	65	Concrete	Water Supply	High	1933
32	Hammonasset Dam	New Haven	63	Concrete	Water Supply	High	1956
33	Deep River Reservoir Dam	New London	62	Earth	Water Supply	High	1926
34	Menunkatuck Reservoir Dam	New Haven	61	Concrete	Water Supply	High	1929
35	Bristol Reservoir #5 Dam	Litchfield	60	Earth	Water Supply	High	1932
36	Lake Dawson Dam	New Haven	60	Earth	Water Supply	High	1890
37	Whigville Reservoir Dam	Hartford	58	Earth	Water Supply	High	1909
38	Nepaug East Dike	Hartford	57	Earth	Water Supply	High	1916
39	Moody Reservoir Dam	New Haven	56	Earth	Water Supply	High	1900
40	Means Brook Reservoir Dam	Fairfield	54	Concrete	Water Supply	High	1917
41	Colebrook River Dam - Saddle Dike	Litchfield	54	Rockfill	Flood Risk Reduction	High	1969
42	American Can Company Dam	Fairfield	53	Concrete	Recreation	High	1970
43	Whitney Flood Control Site #1 Dam	Tolland	52	Earth	Flood Risk Reduction	High	1962
44	Hancock Brook Dam - Railroad Dike	Litchfield	51	Earth	Flood Risk Reduction	High	1966
45	Laurel Reservoir Dam	Fairfield	50	Earth	Water Supply	High	1923
46	Wasel Reservoir Dike	Hartford	50	Earth	Water Supply	High	1966
47	Crystal Lake Dam	Middlesex	50	Earth	Recreation	High	1850
48	Trap Falls Reservoir Dam	Fairfield	48	Earth	Water Supply	High	1905
49	Shuttle Meadow Reservoir Dam	Hartford	48	Earth	Water Supply	High	1894
50	Higganum Reservoir Dam	Middlesex	48	Earth	Recreation	High	1868

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