Significant Hazard Dams

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Dam Name	Hazard	Height	Built	Type	State
Upper Moore Pond Windsor	Significant Hazard	18 ft	1974	Earth	Vermont
Upper Murray Pond Dam Middlesex	Significant Hazard	7 ft	—	Stone	Connecticut
Upper Mystic Lake Dam Middlesex	Significant Hazard	16 ft	2009	Earth	Massachusetts
Upper Naukeag Lake Dam Worcester	Significant Hazard	8 ft	1875	Earth	Massachusetts
Upper North Channel Dam Jefferson	Significant Hazard	24 ft	1948	Concrete	New York
Upper Nueces Lake Dam Zavala	Significant Hazard	60 ft	1947	Earth	Texas
Upper of Lower Canjilon Lake Dam Rio Arriba	Significant Hazard	10 ft	1948	Earth	New Mexico
Upper Pecan Bayou WS SCS Site 1 Dam Callahan	Significant Hazard	50 ft	1967	Earth	Texas
Upper Pecan Bayou WS SCS Site 24 Dam Coleman	Significant Hazard	44 ft	1971	Earth	Texas
Upper Pecan Bayou WS SCS Site 26 Dam Brown	Significant Hazard	23 ft	1968	Earth	Texas
Upper Pecan Bayou WS SCS Site 30 Dam Brown	Significant Hazard	34 ft	1975	Earth	Texas
Upper Pecan Bayou WS SCS Site 34 Dam Brown	Significant Hazard	30 ft	1968	Earth	Texas
Upper Petit Jean Wid Site 4 Scott	Significant Hazard	43 ft	1992	Earth	Arkansas
Upper Pine Lake Dam Hardin	Significant Hazard	42 ft	1934	Earth	Iowa
Upper Pond San Mateo	Significant Hazard	30 ft	—	Earth	California
Upper Pond Kent	Significant Hazard	6 ft	1900	Gravity	Rhode Island
Upper Pond Dam Monmouth	Significant Hazard	—	—	Earth	New Jersey
Upper Pond Dam Hartford	Significant Hazard	8 ft	—	Earth	Connecticut
Upper Pond Dam #1 Middlesex	Significant Hazard	8 ft	—	Earth	Connecticut
Upper Pond Dam (Aka Holbrook ) New London	Significant Hazard	12 ft	1860	Earth	Connecticut
Upper Pond Dam (Also See 11112) Litchfield	Significant Hazard	20 ft	1880	Earth	Connecticut
Upper Porter Pond Dam Plymouth	Significant Hazard	11 ft	1940	Earth	Massachusetts
Upper Reservoir Dam Worcester	Significant Hazard	12 ft	—	Gravity	Massachusetts
Upper Reservoir Dam Franklin	Significant Hazard	17 ft	—	Earth	Massachusetts
Upper Rock Creek Fremont	Significant Hazard	101 ft	1961	Earth	Wyoming
Upper Salmon Sierra	Significant Hazard	13 ft	1899	Rockfill	California
Upper Salt Creek 11-A Lancaster	Significant Hazard	28 ft	1958	Earth	Nebraska
Upper Salt Creek 35-1 Lancaster	Significant Hazard	25 ft	1956	Earth	Nebraska
Upper Salt Creek 4-A Lancaster	Significant Hazard	25 ft	1955	Earth	Nebraska
Upper Sandusky Reservoir #2 Wyandot	Significant Hazard	25 ft	2005	Earth	Ohio
Upper Sandusky Reservoir Dam Wyandot	Significant Hazard	31 ft	1957	Earth	Ohio
Upper Sandwash Ranch - Dog 6 Duchesne	Significant Hazard	—	—	Earth	Utah
Upper Sandwash Ranch - Honeymoon - 1 Duchesne	Significant Hazard	—	—	Earth	Utah
Upper Sawmill Pond Dam Worcester	Significant Hazard	16 ft	1850	Earth	Massachusetts
Upper Shawme Lake Dam Barnstable	Significant Hazard	12 ft	—	Earth	Massachusetts
Upper Southside Sport Beaver	Significant Hazard	14 ft	1979	Earth	Pennsylvania
Upper State Lake Clay	Significant Hazard	—	1955	Earth	Alabama
Upper Stokes Dam Burlington	Significant Hazard	11 ft	—	Earth	New Jersey
Upper Sylvan Lake Dam Burlington	Significant Hazard	20 ft	1941	Earth	New Jersey
Upper Tansil Dam Eddy	Significant Hazard	22 ft	1893	Concrete	New Mexico
Upper Teakettle Spout Lake Dam Putnam	Significant Hazard	11 ft	1950	Earth	New York
Upper Tradewater FRS No 5 Christian	Significant Hazard	34 ft	1987	Earth	Kentucky
Upper Trout Lake Dam Rio Arriba	Significant Hazard	20 ft	1950	Earth	New Mexico
Upper Tucker Pond East Dam Worcester	Significant Hazard	13 ft	—	Earth	Massachusetts
Upper Tucker Pond South Dam Worcester	Significant Hazard	22 ft	—	Rockfill	Massachusetts
Upper Tule Lake Arapahoe	Significant Hazard	11 ft	1892	Earth	Colorado
Upper Turtle River Flood Ret. 1 Grand Forks	Significant Hazard	38 ft	1977	Earth	North Dakota
Upper Turtle River Flood Ret. 8 Grand Forks	Significant Hazard	35 ft	1973	Earth	North Dakota
Upper Unionville Reservoir Dam Hartford	Significant Hazard	23 ft	1909	Earth	Connecticut
Upper Van Horn Reservoir Dam Hampden	Significant Hazard	32 ft	1957	Earth	Massachusetts