211.12—Exchange of lands.
The Secretary of the Army is authorized to exchange lands acquired for river and harbor and flood control projects for privately owned lands required for such purposes. ( Sec. 2 of the act of June 20, 1938 (52 Stat. 804; 33 U.S.C. 558b) as extended by sec. 3 of the act of August 11, 1939 (53 Stat. 1414, 33 U.S.C. 558b-1 ).)