Irrigation Dams

9,419 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Thompson Lake Dam Lonoke	Significant Hazard	17 ft	1953	Earth	Arkansas
Thompson No 1 Main Dam Nez Perce	Significant Hazard	17 ft	1967	—	Idaho
Thompson No 2 Clearwater	Significant Hazard	19 ft	1970	—	Idaho
Thompson Valley Diversion (Slid) Lake	Significant Hazard	48 ft	1915	Earth	Oregon
Thompson Valley Reservoir Lake	Significant Hazard	48 ft	1922	Earth	Oregon
Thorald Dam San Juan	Low Hazard	—	1988	Earth	Washington
Thorn McCone	Low Hazard	10 ft	1971	Earth	Montana
Thornhill Dam Pulaski	Unknown	25 ft	—	Earth	Virginia
Thornhill Lake Dam Tift	Low Hazard	16 ft	1967	Earth	Georgia
Thornton Lake Dam Deer Lodge	Significant Hazard	11 ft	1904	Rockfill	Montana
Thorn Tree Dam Warren	Low Hazard	42 ft	1997	Earth	Iowa
Thorton Dam Pittsylvania	Unknown	29 ft	—	Earth	Virginia
Thousand Creek Dam Humboldt	Low Hazard	31 ft	—	Earth	Nevada
Thowhorn Dam Lunenburg	Unknown	16 ft	—	Earth	Virginia
Three Creek Deschutes	Significant Hazard	21 ft	—	Earth	Oregon
Three Creeks (Beaver) Beaver	High Hazard	—	1949	Earth	Utah
Three Creeks (Sevier) Sevier	High Hazard	—	1884	Earth	Utah
Three Forks Rosebud	Low Hazard	17 ft	1953	Earth	Montana
Three Lakes Wasatch	Significant Hazard	—	1961	Earth	Utah
Three Lakes Reservoir Dam Chelan	Low Hazard	—	1908	Earth	Washington
Three Mile Albany	Low Hazard	18 ft	1904	Earth	Wyoming
Three Mile Jackson	Low Hazard	16 ft	1934	Earth	Colorado
Three Mile Creek Reservoir Harney	Low Hazard	12 ft	1946	Earth	Oregon
Three Mile Falls Diversion Umatilla	Low Hazard	28 ft	1913	Concrete	Oregon
Three Mile Flat Reservoir Klamath	Low Hazard	25 ft	1964	Earth	Oregon
Three Mile Reservoir (L.&C.) Lewis and Clark	High Hazard	70 ft	1926	Earth	Montana
Three Rivers Farm Pond Dam Hertford	Low Hazard	—	1988	Earth	North Carolina
Three Toes Morgan	Significant Hazard	—	—	Earth	Utah
Throttle Dam No. 2 Colfax	High Hazard	67 ft	1914	Earth	New Mexico
Thurber Lake Dam Erath	High Hazard	29 ft	—	Earth	Texas
Thurlow Lake Dam Moore	High Hazard	—	1956	Earth	North Carolina
Thurman Shasta	Low Hazard	63 ft	1966	Earth	California
Thurman Lake Beckham	Low Hazard	38 ft	1970	Earth	Oklahoma
Thurmans Pond St. Tammany	Low Hazard	10 ft	1953	Earth	Louisiana
Thurston Lake Prowers	Significant Hazard	16 ft	1928	Earth	Colorado
Tiber Liberty	High Hazard	206 ft	1955	Earth	Montana
Tielke Dam 1 Holt	Low Hazard	27 ft	1963	Earth	Nebraska
Tietjen Banks Irrigation Dam Nuckolls	Low Hazard	26 ft	1985	Earth	Nebraska
Tieton Yakima	High Hazard	196 ft	1925	Concrete	Washington
Tift Dam Meade	Low Hazard	32 ft	1979	Earth	South Dakota
Tifton Fishing Club Lake Dam Irwin	Low Hazard	14 ft	1966	Earth	Georgia
Tigar Milk Valley	Low Hazard	15 ft	1965	Earth	Montana
Tigner-Farrer Levee Brazoria	Low Hazard	14 ft	—	Earth	Texas
Tihonet Pond #1 Dam Plymouth	Significant Hazard	16 ft	—	Earth	Massachusetts
Tihonet Pond #2 Dam Plymouth	Significant Hazard	26 ft	—	Earth	Massachusetts
Tiller Lake Dam Hanover	High Hazard	13 ft	—	Earth	Virginia
Tilley Lake Dam No 1 Comanche	Low Hazard	12 ft	—	Earth	Texas
Tilley Lake Dam No 2 Comanche	Low Hazard	12 ft	—	Earth	Texas
Tillman Irrigation Pond #2 (Middle Dam) Jenkins	Low Hazard	13 ft	1979	Earth	Georgia
Tillman Irrigation Pond(Upper Dam) Burke	Low Hazard	13 ft	—	Earth	Georgia