Irrigation Dams

9,419 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Williams-Sherman Reservoir Harney	Low Hazard	25 ft	1919	Earth	Oregon
Williams Valley Mendocino	Low Hazard	47 ft	1965	Earth	California
Willis Dam Powhatan	Unknown	26 ft	—	Earth	Virginia
Willis Dam Mecklenburg	Unknown	16 ft	—	Earth	Virginia
Willis Dam Culpeper	Unknown	18 ft	—	Earth	Virginia
Willits Johnson	Low Hazard	22 ft	1940	Earth	Wyoming
Willough McCone	Low Hazard	24 ft	1952	Earth	Montana
Willow Delta	Low Hazard	28 ft	1948	Earth	Colorado
Willow Belt Cascade	Low Hazard	10 ft	1951	Earth	Montana
Willow Creek Yavapai	High Hazard	65 ft	1936	Arch	Arizona
Willow Creek Sevier	Significant Hazard	—	1943	Earth	Utah
Willow Creek Big Horn	High Hazard	—	1941	Earth	Montana
Willow Creek 3 (Malheur) Malheur	High Hazard	110 ft	1944	Earth	Oregon
Willow Creek Bor Co Grand	High Hazard	95 ft	1953	Earth	Colorado
Willow Creek Bor Mt Lewis and Clark	High Hazard	74 ft	1911	Earth	Montana
Willow Creek Dam Elko	Low Hazard	58 ft	1986	Rockfill	Nevada
Willow Creek Dam Morrow	High Hazard	159 ft	1982	—	Oregon
Willow Creek Dam Madison	High Hazard	105 ft	1938	Earth	Montana
Willow Creek Dam Spartanburg	Significant Hazard	19 ft	1970	—	South Carolina
Willow Dam Fauquier	Unknown	24 ft	—	Earth	Virginia
Willow Glenn Johnson	Low Hazard	30 ft	1959	Earth	Wyoming
Willow Hill Reservoir Sacramento	High Hazard	24 ft	—	Earth	California
Willow Lake Sublette	Significant Hazard	20 ft	1955	Earth	Wyoming
Willow Lake #1 Napa	High Hazard	40 ft	2004	Earth	California
Willow Park Johnson	High Hazard	56 ft	1959	Earth	Wyoming
Willow Springs #1 Jefferson	High Hazard	23 ft	1963	Earth	Colorado
Willow Valley Reservoir Klamath	Low Hazard	34 ft	1961	Earth	Oregon
Wills Jackson	Low Hazard	13 ft	1917	Earth	Colorado
Willson Water Treatment Plant Levee Washington	Significant Hazard	30 ft	1927	Earth	Maryland
Wills, R. Missoula	Low Hazard	20 ft	1966	Earth	Montana
Willwood Diversion Park	Low Hazard	10 ft	1923	Concrete	Wyoming
Wilson Moffat	Low Hazard	21 ft	1941	Earth	Colorado
Wilson Rio Blanco	Low Hazard	32 ft	1970	Earth	Colorado
Wilson Huerfano	Low Hazard	35 ft	—	Earth	Colorado
Wilson 115 Jackson	Low Hazard	17 ft	1955	Earth	Oklahoma
Wilson Dam Halifax	Unknown	24 ft	—	Earth	Virginia
Wilson Dam Russell	High Hazard	—	1964	Earth	Kansas
Wilson (Judith Basin) Judith Basin	High Hazard	29 ft	1952	Earth	Montana
Wilson Lake Jerome	Significant Hazard	31 ft	1909	—	Idaho
Wilson Lake Dam Vernon	High Hazard	20 ft	1975	Earth	Missouri
Wilson Lake Dam (Klamath) Klamath	Low Hazard	15 ft	1966	Earth	Oregon
Wilson No. 1 Converse	Low Hazard	25 ft	1977	Earth	Wyoming
Wilson Reservoir Dam Elko	Low Hazard	37 ft	1954	Earth	Nevada
Wilson Reservoir No. 1 Sherman	Low Hazard	32 ft	1957	Earth	Oregon
Wilson Wyatt Dam Shelby	Low Hazard	28 ft	1976	Earth	Kentucky
Wilton Jones Lake Dam Tift	Low Hazard	18 ft	1979	Earth	Georgia
Winchester Johnson	Low Hazard	35 ft	1961	Earth	Wyoming
Winchester Placer	Significant Hazard	39 ft	1999	Earth	California
Winder Franklin	Significant Hazard	57 ft	1958	—	Idaho
Windhurst Coos	Significant Hazard	43 ft	—	Earth	Oregon