Flood Risk Reduction Dams

17,618 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Upper Salt Creek 13-A Lancaster	Low Hazard	36 ft	1959	Earth	Nebraska
Upper Salt Creek 13-B Lancaster	Low Hazard	28 ft	1958	Earth	Nebraska
Upper Salt Creek 14-1 Lancaster	Low Hazard	31 ft	1956	Earth	Nebraska
Upper Salt Creek 14-A Lancaster	Low Hazard	27 ft	1957	Earth	Nebraska
Upper Salt Creek 16-A Lancaster	Low Hazard	31 ft	1966	Earth	Nebraska
Upper Salt Creek 17-A Lancaster	Low Hazard	31 ft	1966	Earth	Nebraska
Upper Salt Creek 18-9 Lancaster	Low Hazard	22 ft	1960	Earth	Nebraska
Upper Salt Creek 19-B Lancaster	Low Hazard	35 ft	1959	Earth	Nebraska
Upper Salt Creek 1-A Lancaster	Low Hazard	28 ft	1954	Earth	Nebraska
Upper Salt Creek 2-1 Lancaster	Low Hazard	16 ft	1954	Earth	Nebraska
Upper Salt Creek 22-A Lancaster	Low Hazard	38 ft	1963	Earth	Nebraska
Upper Salt Creek 23-B Lancaster	Low Hazard	27 ft	1963	Earth	Nebraska
Upper Salt Creek 25-1 Lancaster	Low Hazard	17 ft	1959	Earth	Nebraska
Upper Salt Creek 25-A Lancaster	Low Hazard	34 ft	1968	Earth	Nebraska
Upper Salt Creek 26-A Lancaster	Low Hazard	27 ft	1968	Earth	Nebraska
Upper Salt Creek 27-A Lancaster	Low Hazard	28 ft	1968	Earth	Nebraska
Upper Salt Creek 27-B Lancaster	Low Hazard	26 ft	1968	Earth	Nebraska
Upper Salt Creek 27-C Lancaster	Low Hazard	31 ft	1968	Earth	Nebraska
Upper Salt Creek 29-5 Lancaster	Low Hazard	22 ft	1960	Earth	Nebraska
Upper Salt Creek 2-A Lancaster	Low Hazard	36 ft	1955	Earth	Nebraska
Upper Salt Creek 35-1 Lancaster	Significant Hazard	25 ft	1956	Earth	Nebraska
Upper Salt Creek 35-A Lancaster	High Hazard	32 ft	1961	Earth	Nebraska
Upper Salt Creek 36-1 Lancaster	Low Hazard	22 ft	1959	Earth	Nebraska
Upper Salt Creek 38-3 Lancaster	Low Hazard	22 ft	1960	Earth	Nebraska
Upper Salt Creek 38-A Lancaster	Low Hazard	27 ft	1961	Earth	Nebraska
Upper Salt Creek 3-A Lancaster	High Hazard	48 ft	1955	Earth	Nebraska
Upper Salt Creek 4-A Lancaster	Significant Hazard	25 ft	1955	Earth	Nebraska
Upper Salt Creek 5-7 Lancaster	Low Hazard	27 ft	1955	Earth	Nebraska
Upper Salt Creek 5-9 Lancaster	Low Hazard	20 ft	1958	Earth	Nebraska
Upper Salt Creek 5-A Lancaster	Low Hazard	30 ft	1956	Earth	Nebraska
Upper Salt Creek 6-4 Lancaster	Low Hazard	23 ft	1957	Earth	Nebraska
Upper Salt Creek 6-A Lancaster	Low Hazard	31 ft	1966	Earth	Nebraska
Upper Salt Creek 8-A Lancaster	Low Hazard	26 ft	1959	Earth	Nebraska
Upper Salt Creek 8-B Lancaster	Low Hazard	27 ft	1956	Earth	Nebraska
Upper Salt Creek 9-3 Lancaster	Low Hazard	32 ft	1956	Earth	Nebraska
Upper Salt Creek 9-A Lancaster	Low Hazard	27 ft	1960	Earth	Nebraska
Upper Salt Creek Structure 2 Dam Cook	High Hazard	23 ft	1984	Earth	Illinois
Upper Salt Creek Structure 3 Dam Cook	High Hazard	26 ft	1985	Earth	Illinois
Upper Salt Creek Structure 4 Dam Cook	High Hazard	14 ft	1987	Earth	Illinois
Upper Sand Creek Detention Basin Contra Costa	High Hazard	40 ft	2014	Earth	California
Upper San Marcos River WS NRCS Site 5 Dam Hays	High Hazard	65 ft	1989	Earth	Texas
Upper San Marcos River WS SCS Site 1 Hays	High Hazard	80 ft	1983	Earth	Texas
Upper San Marcos River WS SCS Site 3 Hays	High Hazard	60 ft	1991	Earth	Texas
Upper San Marcos River WS SCS Site 4 Hays	High Hazard	99 ft	—	Earth	Texas
Upper Serenity Dam Montgomery	High Hazard	10 ft	1998	Earth	Texas
Upper Sherando SCS 27 Augusta	High Hazard	59 ft	1958	Earth	Virginia
Upper Sterling Whiteside	Low Hazard	9 ft	1907	Gravity	Illinois
Upper Swm Pond @ Mountain Run Hanover	Low Hazard	25 ft	—	Earth	Virginia
Upper Tallahatchie Structure Lt-10-02 Dam Tippah	Low Hazard	33 ft	1959	Earth	Mississippi
Upper Tallahatchie Structure Lt-10-04 Dam Tippah	Low Hazard	28 ft	1958	Earth	Mississippi