The Flood Control Act of 1938 was an Act of the United States Congress signed into law by President Franklin Delano Roosevelt that authorized civil engineering projects such as dams , levees , dikes , and other flood control measures through the United States Army Corps of Engineers and other Federal agencies . It is one of a number of Flood Control Acts passed nearly annually by the United States Congress . Projects covered by the Act (partial list) Dams Blue Mountain Dam (begun 1941; completed 1947) Bull Shoals Dam (begun June 1947; completed July 1951) Coralville, Iowa , dam forming Coralville Lake (begun 1949; completed 1958) Delaware (Ohio) Dam (begun 1947; completed 1951) Denison Dam Green River Lake Dam, Kentucky (begun April 1964, completed June 1969) Kinzua Dam (begun 1960; completed 1965) Norfork Dam (begun 1941, completed 1944) Raccoon Creek dam in Parke County, Indiana , forming Mansfield Lake (begun October 1956; completed July 1960). Mansfield Lake was renamed Cecil M. Harden Lake in 1974. Dale Hollow Lake Dam, Tennessee (begun 1938, completed 1943) Shenango River Dam (begun 1963; completed 1965) Wappapello Dam and Lake Wappapello on the St. Francis River . Wappapello Dam was dedicated in June, 1941;Langdon R. Jones of Kennett, Missouri , delivered the dedication address at the request of Missouri Governor Lloyd C. Stark . See also Water Resources Development Act Rivers and Harbors Act for related legislation which sometime also implement flood control provisions. Notes ↑ "Cecil M. Harden Lake, Raccoon State Recreation Area" (pdf) . Indiana Department of Natural Resources . Retrieved September 24, 2019 . See also: "Cecil M. Hardin Lake (Raccoon SRA)" . Indiana Department of Natural Resources . Retrieved September 24, 2019 . Also: "Cecil Harden Lake" . Lakebrowser.com . Retrieved September 27, 2019 . This United States federal legislation article is a stub . You can help Wikipedia by adding missing information . This United States Congress -related article is a stub . You can help Wikipedia by adding missing information . This article about a civil engineering topic is a stub . You can help Wikipedia by adding missing information .