High Risk Dams in Connecticut

Connecticut has 17 high hazard dams with a condition assessment of poor or unsatisfactory. These are dams where failure would probably cause loss of human life and where recognized safety deficiencies have been identified.

Of the 233 high hazard dams in Connecticut, 17 (7%) have concerning condition ratings — 17 rated poor and 0 rated unsatisfactory.

Dam	County	Height (ft)	Condition	Purpose	Year
Crystal Lake Dam	Middlesex	50	Poor	Recreation	1850
Hartford Reservoir #1 Dam	Hartford	46	Poor	Water Supply	1868
Lake Whitney Dam	New Haven	44	Poor	Water Supply	1861
Great Hill Reservior Dam	New Haven	41	Poor	Recreation	1909
Peat Swamp Reservoir Dam	New Haven	41	Poor	Water Supply	1925
Mad River Dam Homestead Avenue Dam	New Haven	31	Poor	Water Supply	1900
North Grosvenordale Dam	Windham	25	Poor	Recreation	1900
Grupes Reservoir Dam	Fairfield	24	Poor	Water Supply	1871
Factory Pond Dam	Fairfield	24	Poor	Recreation	1874
Warren Pond Dam	Tolland	22	Poor	Recreation	1852
Riverside Pond Dam	Tolland	21	Poor	Water Supply	1880
Fitchville Pond Dam	New London	20	Poor	Recreation	1871
Williams Pond Dam	Hartford	17	Poor	Recreation	1900
Silvia's Lower Pond Dam	New London	14	Poor	Fish and Wildlife Pond
Mirror Lake Dam	Tolland	12	Poor	Recreation
Barber Pond Dam	Hartford	11	Poor	Recreation	1955
Meadow Ridge Detention Dam	Fairfield	6	Poor	Flood Risk Reduction

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