Montana National Forests Boundary Adjustment Act of 2004

Montana National Forests Boundary Adjustment Act of 2004 - Modifies the boundaries of the Helena, Lolo, and Beaverhead-Deerlodge National Forests (the Forests) in Montana as depicted on specified maps.

Requires such maps to be on file and available for public inspection in the offices of the Chief of the Forest Service and Regional Forester. Authorizes the Secretary of Agriculture to make technical corrections to the map.

Requires land acquired within the boundaries of the Forests for National Forest System (NFS) purposes to be managed in accordance with the Weeks Law and laws applicable to the NFS.

States that the boundaries of the Forests as modified under this Act shall, for purposes of certain fund allocation provisions of the Land and Water Conservation Fund Act of 1965 (LWCFA), be considered the boundaries of such Forests as of January 1, 1965 (the effective date of the LWCFA).