Water Supply Dams

7,228 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Spring Brook Intake Lackawanna	High Hazard	33 ft	1894	Earth	Pennsylvania
Spring Creek Archuleta	Low Hazard	13 ft	1930	Earth	Colorado
Spring Creek Ranch Dam Adair	Low Hazard	25 ft	1958	Earth	Missouri
Springdale Lake Cass	High Hazard	17 ft	1954	Earth	Missouri
Springer Dam No. 2 Colfax	High Hazard	34 ft	1964	Earth	New Mexico
Springfield Reservoir Windsor	Significant Hazard	49 ft	1903	Earth	Vermont
Springfield Reservoir (New) Washington	Low Hazard	33 ft	1950	Earth	Kentucky
Springfield Water Works Intake Dam Hampden	Low Hazard	59 ft	1909	Concrete	Massachusetts
Spring Fork Lake Dam Pettis	High Hazard	43 ft	1925	Earth	Missouri
Spring Hill Water Supply Dam Johnson	High Hazard	32 ft	1953	Earth	Kansas
Spring Lake Dam Van Zandt	High Hazard	24 ft	—	Earth	Texas
Spring Lake Dam McDonough	Significant Hazard	46 ft	1927	Earth	Illinois
Spring Mill Lehigh	Low Hazard	27 ft	1900	Earth	Pennsylvania
Spring Mountain Ranch Dam Clark	High Hazard	19 ft	1945	Earth	Nevada
Spring Pond Dam Essex	High Hazard	15 ft	—	Earth	Massachusetts
Springton (Geist) Delaware	High Hazard	75 ft	1931	Earth	Pennsylvania
Spring Valley Lake	High Hazard	37 ft	1968	Earth	California
Spring Valley Park Lake Dam Columbiana	High Hazard	29 ft	1993	Earth	Ohio
Spring Valley Ponds Blount	Low Hazard	—	1965	Earth	Alabama
Spring Valley Ranch Placer	High Hazard	39 ft	1958	Earth	California
Spruce Lake Dam Herkimer	Significant Hazard	18 ft	1897	Masonry	New York
Spruce Pine Water Supply Dam #1 Mitchell	High Hazard	—	—	Concrete	North Carolina
Spruce Pine Water Supply Dam #2 Mitchell	Low Hazard	—	1973	Concrete	North Carolina
Spruce Run Reservoir Union	High Hazard	46 ft	1957	Earth	Pennsylvania
Spruce Run Reservoir Dam Hunterdon	High Hazard	93 ft	1964	Earth	New Jersey
Spun Cascade	Significant Hazard	15 ft	1960	Earth	Montana
Spurlock Lake Dam Madison	Low Hazard	24 ft	1961	Earth	Texas
Square Rock Lake Dam Scott	Low Hazard	25 ft	1942	Earth	Arkansas
Squaw Lake Dam Jackson	Significant Hazard	34 ft	1957	Earth	Oregon
Squirrel Tail Dam Hot Springs	Low Hazard	—	2003	Gravity	Wyoming
Staben Dam Haakon	Low Hazard	16 ft	1935	Earth	South Dakota
Stabilization/Leveling Pond Dam Monmouth	Low Hazard	10 ft	1975	Earth	New Jersey
Stacy Park Resevoir Dam St. Louis	High Hazard	30 ft	1928	Other	Missouri
Stafford Newport	Significant Hazard	5 ft	—	—	Rhode Island
Stafford Reservoir #2 Dam Tolland	Significant Hazard	28 ft	1966	Earth	Connecticut
Stafford Reservoir #3 Dam Tolland	Significant Hazard	11 ft	1930	Earth	Connecticut
Stafford Reservoir #4 Dam Tolland	Significant Hazard	8 ft	1928	Earth	Connecticut
Stagecoach Routt	High Hazard	150 ft	1988	Roller-Compacted Concrete	Colorado
St. Albans North Reservoir Franklin	High Hazard	28 ft	1895	Earth	Vermont
St. Albans South Reservoir Franklin	High Hazard	26 ft	1910	Gravity	Vermont
Stallings Lake Dam Lamar	Low Hazard	17 ft	1970	Earth	Texas
Stampede Sierra	High Hazard	226 ft	1970	Earth	California
Standing Rock Tribe Corson	Significant Hazard	21 ft	1939	Earth	South Dakota
Standing Rock Tribe Corson	Low Hazard	16 ft	1938	Earth	South Dakota
Standing Rock Tribe Corson	Low Hazard	20 ft	1940	Earth	South Dakota
Standley Lake Jefferson	High Hazard	113 ft	1913	Earth	Colorado
Stanford Heights San Francisco	High Hazard	31 ft	1928	Earth	California
Stanley A. Mahr Reservoir San Diego	High Hazard	79 ft	1981	Earth	California
Stanley Dam Mountrail	Low Hazard	21 ft	1968	Earth	North Dakota
Stanley Draper Cleveland	High Hazard	111 ft	1962	Earth	Oklahoma