Irrigation Dams

9,419 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Sid No. 1 Albany	Low Hazard	18 ft	1950	Earth	Wyoming
Siedhoff Dam Saline	Low Hazard	17 ft	1949	Earth	Nebraska
Sierra Blanco #1 Huerfano	Low Hazard	37 ft	1906	Earth	Colorado
Sierra Vista Merced	Low Hazard	12 ft	1872	Earth	California
Siffring Dam Butler	Low Hazard	17 ft	1956	Earth	Nebraska
Signal #1 Adams	Significant Hazard	22 ft	1890	Earth	Colorado
Signal #2 Adams	Low Hazard	8 ft	1890	Earth	Colorado
Sikorski & Sons Fallon	Low Hazard	30 ft	1952	Earth	Montana
Silva Flat Lassen	Significant Hazard	11 ft	1926	Earth	California
Silver Creek Dam White Pine	High Hazard	36 ft	1956	Earth	Nevada
Silver Falls Log Pond (Marion) Marion	Low Hazard	14 ft	1956	Earth	Oregon
Silver Jack Gunnison	High Hazard	173 ft	1971	Earth	Colorado
Silver Lake Amador	High Hazard	32 ft	1876	Earth	California
Silver Lake Sublette	High Hazard	22 ft	1953	Earth	Wyoming
Silver Lake Carbon	Low Hazard	23 ft	1931	Earth	Wyoming
Silver Lake Plumas	High Hazard	21 ft	1906	Earth	California
Silver Lake East Dam Deer Lodge	Low Hazard	11 ft	1918	Earth	Montana
Silver Lake Islet Wasatch	Low Hazard	—	—	Rockfill	Utah
Silver Lake West Dam Deer Lodge	High Hazard	17 ft	1918	Earth	Montana
Silver Leaf Morgan	High Hazard	—	1957	Earth	Utah
Silver Springs No. 1 Summit	Significant Hazard	—	1980	Earth	Utah
Silver Springs No. 2 Summit	Significant Hazard	—	1980	Earth	Utah
Simanske Dam Cumberland	Unknown	21 ft	—	Earth	Virginia
Simmons Johnson	Low Hazard	24 ft	1940	Earth	Wyoming
Simmons Lake Dam Caldwell	High Hazard	30 ft	1977	Earth	Missouri
Simms Reservoir Klamath	Low Hazard	15 ft	1915	Earth	Oregon
Simon #1 Rio Blanco	Low Hazard	27 ft	1917	Earth	Colorado
Simon Run Watershed Site 5-2 Pottawattamie	Low Hazard	30 ft	1976	Earth	Iowa
Simonsen Dam Nuckolls	Low Hazard	19 ft	1963	Earth	Nebraska
Simpkins Dam Bedford	Low Hazard	36 ft	—	Earth	Virginia
Simplot Effluent Irrigation Lagoon Bannock	High Hazard	39 ft	1981	—	Idaho
Simpson Dam Okaloosa	Low Hazard	20 ft	1968	Earth	Florida
Simpson Dam Comanche	Low Hazard	15 ft	1986	Earth	Texas
Simpson Lake Dam Moore	High Hazard	—	1953	Earth	North Carolina
Simpson Lake Dam Rockingham	Low Hazard	—	1958	Earth	North Carolina
Simpson Reservoir (Jackson) Jackson	Low Hazard	26 ft	1967	Earth	Oregon
Sims Lake Dam Audrain	Low Hazard	17 ft	1975	Earth	Missouri
Sims Lake Dam Cass	Low Hazard	25 ft	1977	Earth	Missouri
Sims No.1 Bryan	Unknown	22 ft	1975	Earth	Oklahoma
Sims No 2 Bryan	Low Hazard	28 ft	1968	Earth	Oklahoma
Sinaloa Lake Ventura	High Hazard	30 ft	1925	Earth	California
Singletary Dam Jackson	Low Hazard	25 ft	1976	Earth	South Dakota
Singleton Reservoir Dam Gage	Low Hazard	29 ft	2016	Earth	Nebraska
Sinnard Goshen	Significant Hazard	26 ft	1935	Earth	Wyoming
Site 1 - Black Belt Experiment Station Noxubee	Low Hazard	10 ft	2018	Earth	Mississippi
Site 2 - Black Belt Experiment Station Noxubee	Low Hazard	10 ft	2018	Earth	Mississippi
Sitz Reservoir Harney	Low Hazard	22 ft	1924	Earth	Oregon
Six Mile Natrona	Low Hazard	40 ft	1951	Earth	Wyoming
Six Mile Creek Rich	Significant Hazard	—	1951	Earth	Utah
Six Mile - Main Boulder	High Hazard	35 ft	1892	Earth	Colorado