Water Supply Dams

7,228 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Del-Co Upland Storage Reservoir No. 5 Delaware	High Hazard	45 ft	2004	Earth	Ohio
Delphos Reservoir Dam Van Wert	High Hazard	29 ft	2007	Earth	Ohio
Delta Control Delta	Low Hazard	24 ft	1961	Earth	Colorado
Delta Pond Sonoma	Significant Hazard	27 ft	1984	Earth	California
Delta Reservoir No. 1 Fulton	High Hazard	22 ft	1933	Earth	Ohio
Delta Upground Reservoir No. 2 Fulton	High Hazard	42 ft	1984	Earth	Ohio
Del Valle Alameda	High Hazard	222 ft	1968	Earth	California
Demarco Lake Dam Boone	High Hazard	31 ft	—	Earth	Missouri
Denby Dam Oglala Lakota	Significant Hazard	27 ft	1939	Earth	South Dakota
Denney Lake Dam Lamar	Low Hazard	18 ft	1964	Earth	Texas
Dennie Shelton Lake Dam Mills	Low Hazard	30 ft	1975	Earth	Texas
Dennis No. 2 Sonoma	Low Hazard	60 ft	1997	Earth	California
Denny Lake Montezuma	Low Hazard	8 ft	1909	Earth	Colorado
Dequeen Dam Sevier	High Hazard	160 ft	1977	Rockfill	Arkansas
Des Moines County Roadgrade Dam 6-69-4 Des Moines	Low Hazard	26 ft	1985	Earth	Iowa
Des Moines-Waterworks Dam Polk	Low Hazard	7 ft	1923	Gravity	Iowa
Detwilder Lake Dam Sullivan	Low Hazard	34 ft	1969	Earth	Missouri
Development No. 1 Dam Multnomah	High Hazard	200 ft	1929	Concrete	Oregon
Development No. 2 Dam Clackamas	High Hazard	145 ft	1962	Rockfill	Oregon
Devil Canyon Second Afterbay San Bernardino	Low Hazard	40 ft	1995	Earth	California
Devils Canyon Dike #1 San Bernardino	High Hazard	15 ft	1934	Earth	California
Devils Gate Los Angeles	High Hazard	108 ft	1920	Gravity	California
Dewar Lake Dam Harnett	Significant Hazard	—	1951	Earth	North Carolina
Deweese Custer	High Hazard	58 ft	1903	Arch	Colorado
Dewey Forebay Municipality of Skagway	Low Hazard	30 ft	1905	Timber Crib	Alaska
Diamond Hill Reservoir Providence	High Hazard	76 ft	1971	Earth	Rhode Island
Diamond Lake Dam (Poweshiek Co) Poweshiek	Significant Hazard	40 ft	1952	Earth	Iowa
Diamond Valley Lake Riverside	High Hazard	284 ft	2000	Earth	California
Diamond Valley Lake Forebay Riverside	Low Hazard	22 ft	1999	Earth	California
Diascund Creek Dam New Kent	High Hazard	35 ft	—	Earth	Virginia
Dickenson Ranch Lake Dam McMullen	Low Hazard	18 ft	1967	Earth	Texas
Dickey Lake Dam Eastland	Low Hazard	35 ft	1980	Earth	Texas
Dickey Lake Dam Henry	High Hazard	25 ft	1880	Earth	Missouri
Dickinson Stark	High Hazard	49 ft	1950	Earth	North Dakota
Dickinson Lake Dam Wichita	Low Hazard	13 ft	1957	Earth	Texas
Dickson Lake Dam Clay	Low Hazard	21 ft	1975	Earth	Texas
Dick Week Napa	Significant Hazard	70 ft	1955	Earth	California
Diederich Reservoir Los Angeles	High Hazard	60 ft	1950	Earth	California
Diemer No. 8 Orange	Significant Hazard	172 ft	1968	Other	California
Diemer Ozone Contact Basin Orange	High Hazard	32 ft	2011	Other	California
Diemer Reservoir Orange	High Hazard	22 ft	1963	Other	California
Dierks Dam Sevier	High Hazard	153 ft	1975	Rockfill	Arkansas
Dierks Lake Dam Howard	Low Hazard	46 ft	1956	Rockfill	Arkansas
Diller Lake Dam Shackelford	Low Hazard	15 ft	1960	Earth	Texas
Dillon Summit	High Hazard	231 ft	1963	Earth	Colorado
Dillon Summit	High Hazard	231 ft	1963	Earth	Colorado
Dillon Dam Garland	Significant Hazard	44 ft	1903	Arch	Arkansas
Dillon Lake Dam Maries	Low Hazard	25 ft	1954	Earth	Missouri
Dimock Hutchinson	Low Hazard	30 ft	1937	Earth	South Dakota
Dina Bob Lake Sonoma	Significant Hazard	33 ft	1955	Earth	California