Flood Risk Reduction Dams

17,618 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Big Wyacondah Watershed Site 21b Davis	Low Hazard	27 ft	1976	Earth	Iowa
Big Wyacondah Watershed Site 21b-1 Davis	Low Hazard	27 ft	1976	Earth	Iowa
Big Wyacondah Watershed Site 21c Davis	Low Hazard	29 ft	1976	Earth	Iowa
Big Wyacondah Watershed Site 23 Davis	Low Hazard	31 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 24 Davis	Low Hazard	27 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 26 Davis	Low Hazard	28 ft	1971	Earth	Iowa
Big Wyacondah Watershed Site 27-1 Davis	Low Hazard	28 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 27-2 Davis	Low Hazard	21 ft	1976	Earth	Iowa
Big Wyacondah Watershed Site 27-A-2 Davis	Low Hazard	25 ft	1971	Earth	Iowa
Big Wyacondah Watershed Site 27-A-3 Davis	Low Hazard	27 ft	1971	Earth	Iowa
Big Wyacondah Watershed Site 27-G-2 Davis	Low Hazard	27 ft	1971	Earth	Iowa
Big Wyacondah Watershed Site 27-H Davis	Low Hazard	27 ft	1976	Earth	Iowa
Big Wyacondah Watershed Site 27-H-1 Davis	Low Hazard	23 ft	1963	Earth	Iowa
Big Wyacondah Watershed Site 27-H-3 Davis	Low Hazard	24 ft	1963	Earth	Iowa
Big Wyacondah Watershed Site 27-H-4 Davis	Low Hazard	24 ft	1963	Earth	Iowa
Big Wyacondah Watershed Site 27-J Davis	Low Hazard	16 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 27-K Davis	Low Hazard	24 ft	1963	Earth	Iowa
Big Wyacondah Watershed Site 27-L Davis	Low Hazard	24 ft	1963	Earth	Iowa
Big Wyacondah Watershed Site 27-P Davis	Low Hazard	23 ft	1963	Earth	Iowa
Big Wyacondah Watershed Site 28 Davis	Low Hazard	29 ft	1976	Earth	Iowa
Big Wyacondah Watershed Site 32-1 Davis	Low Hazard	16 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 32-3 Davis	Low Hazard	19 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 35 Davis	Low Hazard	17 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 38-3 Davis	Low Hazard	18 ft	1976	Earth	Iowa
Big Wyacondah Watershed Site 38-A Davis	Low Hazard	27 ft	1971	Earth	Iowa
Big Wyacondah Watershed Site 42 Davis	Low Hazard	25 ft	1964	Earth	Iowa
Big Wyacondah Watershed Site 43 Davis	Low Hazard	15 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 44 Davis	Low Hazard	16 ft	1966	Earth	Iowa
Big Wyacondah Watershed Site 45 Davis	Low Hazard	21 ft	1964	Earth	Iowa
Big Wyacondah Watershed Site 47 Davis	Low Hazard	21 ft	1964	Earth	Iowa
Big Wyacondah Watershed Site 7 Davis	Low Hazard	28 ft	1976	Earth	Iowa
B-II Detention Basin Dam Comanche	High Hazard	21 ft	1984	Earth	Oklahoma
Bill Holida Wayne	Low Hazard	25 ft	1995	Earth	Missouri
Billings Lake Wpa 2 Dam Cavalier	Low Hazard	8 ft	1999	Earth	North Dakota
Billingsley Dam Douglas	Low Hazard	—	1949	Earth	Washington
Billingsley Pond Dam 3 Schuyler	Low Hazard	33 ft	1979	Earth	Illinois
Bill Pond Gss1 Caddo	Low Hazard	23 ft	2000	Earth	Oklahoma
Binder Irrigation Diversion Dam 1 Pawnee	Low Hazard	34 ft	2022	Earth	Nebraska
Birch Cooley 19 Renville	Low Hazard	32 ft	—	Earth	Minnesota
Birch Dam Osage	High Hazard	97 ft	1977	Earth	Oklahoma
Birch Hill Dam - Winchenden Dike Worcester	High Hazard	49 ft	1942	Rockfill	Massachusetts
Birch Lake Lake	Low Hazard	7 ft	1922	Rockfill	Minnesota
Biron Wood	High Hazard	24 ft	1937	Gravity	Wisconsin
Bish Dam Hamilton	Low Hazard	23 ft	1971	Earth	Nebraska
Bishop Creek Dam Elko	High Hazard	80 ft	1912	Earth	Nevada
Bishop Creek Dam WS Str #7 Appling	High Hazard	21 ft	—	Earth	Georgia
Bishop Creek WS Str. No 1 Appling	Low Hazard	12 ft	1963	Earth	Georgia
Bitter Creek Subwatershed Site 1-1 Ida	Low Hazard	40 ft	1978	Earth	Iowa
Bitter Creek Subwatershed Site 3-1 Ida	Low Hazard	42 ft	1978	Earth	Iowa
Bitter Creek Subwatershed Site E-1 Ida	Low Hazard	38 ft	1995	Earth	Iowa