Flood Risk Reduction Dams

17,618 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Washburn Subwatershed Sta28+00 Gully3 Woodbury	Low Hazard	32 ft	1960	Earth	Iowa
Washburn Subwatershed Sta 35+40 Gul.1 Woodbury	Low Hazard	45 ft	1960	Earth	Iowa
Washington Dam 1 Washington	Low Hazard	37 ft	1989	Earth	Nebraska
Washington Mountain Lake Dam Berkshire	High Hazard	28 ft	1972	Earth	Massachusetts
Washington School Washington	High Hazard	23 ft	1976	Earth	Pennsylvania
Washita County State School Land Washita	Low Hazard	36 ft	1972	Earth	Oklahoma
Wassookeag Lake Penobscot	High Hazard	14 ft	1914	Rockfill	Maine
Watauga Dam Carter	High Hazard	332 ft	1948	Rockfill	Tennessee
Watchung Square Dam Somerset	Significant Hazard	10 ft	—	Earth	New Jersey
Waterbury Washington	High Hazard	187 ft	1938	Earth	Vermont
Waterbury Roadway Embankment Oswego	High Hazard	5 ft	1914	Earth	New York
Water Control Structure 2 St. Lucie	Low Hazard	13 ft	1981	Other	Florida
Wateree Creek WCD Dam 1 Fairfield	Low Hazard	42 ft	1963	—	South Carolina
Wateree Creek WCD Dam 2 Fairfield	Low Hazard	40 ft	1963	—	South Carolina
Wateree Creek WCD Dam 4 Fairfield	Low Hazard	41 ft	1960	—	South Carolina
Waterfall Way Detention Basin Washington	Significant Hazard	27 ft	—	Earth	Pennsylvania
Waterford Ess Dam Lancaster	High Hazard	38 ft	2008	Earth	Nebraska
Waterloo Park Dam Travis	High Hazard	19 ft	2014	Concrete	Texas
Waterman-Spring Subwtrshd Site 1 O'Brien	Low Hazard	29 ft	1961	Earth	Iowa
Waterman-Spring Subwtrshd Sta 133+55 #2 Cherokee	Low Hazard	24 ft	1961	Earth	Iowa
Waterman-Spring Subwtrshd Sta 29+02 #1 Cherokee	Low Hazard	33 ft	1961	Earth	Iowa
Watermill Road Dam Loudoun	Unknown	23 ft	—	Earth	Virginia
Water Tank Sandoval	High Hazard	—	—	—	New Mexico
Watertown Dam Middlesex	Significant Hazard	10 ft	—	Earth	Massachusetts
Watervliet Lower Dam Albany	High Hazard	27 ft	1912	Buttress	New York
Watervliet Upper Dam Albany	High Hazard	72 ft	1912	Earth	New York
Watkins Lake Dam Grundy	Low Hazard	26 ft	1972	Earth	Missouri
Watkins Mill State Park Dam Clay	High Hazard	55 ft	1971	Earth	Missouri
Watopa Township No. 1 Wabasha	Significant Hazard	32 ft	1976	Earth	Minnesota
Watson Dam Webster	Significant Hazard	17 ft	1995	Earth	Nebraska
Watson Lake Dam Logan	Low Hazard	—	1954	Earth	Arkansas
Watts Bar Dam Meigs	High Hazard	118 ft	1942	Concrete	Tennessee
Watts Bar Nuclear Holding Pond Cumberland	Low Hazard	20 ft	1975	Earth	Tennessee
Waubonsie Creek Watershed Site M-3 Mills	Low Hazard	34 ft	1999	Earth	Iowa
Waubonsie Creek Watershed Site M-4 Mills	Low Hazard	32 ft	1998	Earth	Iowa
Waubonsie Creek Watershed Sites M-5 Mills	Low Hazard	30 ft	1999	Earth	Iowa
Waubonsie Cr. Watershed Site 11-1 Mills	Low Hazard	71 ft	1977	Earth	Iowa
Waubonsie Cr. Watershed Site 23-1 Mills	Low Hazard	45 ft	1979	Earth	Iowa
Waubonsie Cr. Watershed Site 23-2 Mills	Low Hazard	54 ft	1979	Earth	Iowa
Waubonsie Cr. Watershed Site 23-3 Mills	Low Hazard	53 ft	1987	Earth	Iowa
Waubonsie Cr. Watershed Site 3 Mills	Low Hazard	43 ft	1994	Earth	Iowa
Waubonsie Cr. Watershed Site 3-1 Fremont	Low Hazard	46 ft	1985	Earth	Iowa
Waubonsie Cr. Watershed Site 3-1-1 Fremont	Low Hazard	44 ft	1984	Earth	Iowa
Waubonsie Cr. Watershed Site 3-11 Mills	Low Hazard	66 ft	1989	Earth	Iowa
Waubonsie Cr. Watershed Site 31-1 Mills	Low Hazard	50 ft	1983	Earth	Iowa
Waubonsie Cr. Watershed Site 3-1-2 Fremont	Low Hazard	47 ft	1984	Earth	Iowa
Waubonsie Cr. Watershed Site 3-1-3 Fremont	Low Hazard	42 ft	1984	Earth	Iowa
Waubonsie Cr. Watershed Site 3-2 Mills	Low Hazard	51 ft	1993	Earth	Iowa
Waubonsie Cr. Watershed Site 3-3 Mills	Low Hazard	49 ft	1993	Earth	Iowa
Waubonsie Cr. Watershed Site 3-5 Mills	Low Hazard	51 ft	1989	Earth	Iowa