Ouachita National Forest Boundary Adjustment Act - Modifies the boundaries of the Ouachita National Forest, Oklahoma and Arkansas.
Directs that: (1) any federally-owned lands that, before the enactment date of this Act, have been acquired for National Forest System (NFS) purposes within the boundaries of the Ouachita National Forest as modified by this Act, and any lands that are acquired on or after that date for NFS purposes within such boundaries, be managed as lands acquired under the Weeks Act and in accordance with the other laws and regulations pertaining to the NFS; and (2) for purposes of the Land and Water Conservation Fund Act of 1965, the boundaries of the Ouachita National Forest as modified by this Act be considered to be boundaries of such forest as of January 1, 1965.