To modify the boundary of the Casa Grande Ruins National Monument, and for other purposes.

Summary: Casa Grande Ruins National Monument Boundary Modification Act of 2004 - Modifies the boundary of the Casa Grande Ruins National Monument (Monument).

Authorizes the Secretary of the Interior to acquire certain lands from the State of Arizona for the expansion of the boundaries of the Monument.

Transfers jurisdiction over certain Federal land in the Monument from the National Park Service to the Bureau of Indian Affairs to allow for the widening and paving of the San Carlos Irrigation Project.

SECTION 1. CASA GRANDE RUINS BOUNDARY ADJUSTMENT.

    (a) Short Title.--This section may be cited as the ``Casa Grande 
Ruins National Monument Boundary Modification Act of 2004''.
    (b) Findings and Purpose.--
            (1) Findings.--Congress finds as follows:
                    (A) Casa Grande Ruin Reservation was set aside on 
                March 2, 1889, proclaimed as the Nation's first 
                archeological preserve on June 22, 1892, and 
                redesignated as Casa Grande Ruins National Monument on 
                August 3, 1918.
                    (B) Casa Grande Ruins National Monument protects 
                one of the finest architectural examples of 13th 
                Century Hohokam culture in the American Southwest known 
                to early Spanish explorers as the ``Great House''.
                    (C) Casa Grande is only part of the story of this 
                ancient town that may have covered 2 square miles.
                    (D) Recent surveys and research have determined 
                that the area of the Great House and the village 
                surrounding it extends beyond the current monument 
                boundary.
            (2) Purposes.--The purposes of this Act are as follows:
                    (A) To modify the boundary of Casa Grande Ruins 
                National Monument--
                            (i) to protect newly discovered sites 
                        associated with the existing monument;
                            (ii) to expand and extend our knowledge and 
                        understanding of the ancient Hohokam culture, a 
                        major influence in the development of the 
                        American Southwest; and
                            (iii) to provide greater opportunities to 
                        visitors, researchers, and surrounding 
                        communities to understand and appreciate the 
                        contributions of this culture to the region.
                    (B) To correct an unintentional trespass and allow 
                for the widening and paving of the San Carlos 
                Irrigation Project (Pima Lateral Canal) by transferring 
                jurisdiction of approximately 3.75 acres of Federal 
                land from the National Park Service to the Bureau of 
                Indian Affairs.
                    (C) To clarify ownership of land on the monument's 
                southwest boundary.
    (c) Boundary Adjustment.--
            (1) In general.--The boundary of the Casa Grande Ruins 
        National Monument is modified to include the approximately 257 
        acres, generally depicted on the map entitled ``2004 Proposed 
        Casa Grande Ruins Boundary Modification'', numbered 303/80,018, 
        and dated August 2004 (referred to in this section as the 
        ``Map'') .
            (2) Map.--The Map shall be on file and available for 
        inspection in the appropriate offices of the National Park 
        Service.
            (3) Administration of lands.--Lands added to the monument 
        by this subsection shall be administered by the Secretary as 
        part of the monument in accordance with applicable laws and 
        regulations.
    (d) Land Acquisition.--
            (1) In general.--The Secretary is authorized to acquire 
        lands or interest in lands owned by the State of Arizona 
        identified for such purpose on the Map for expansion of the 
        boundaries of the Casa Grande Ruins National Monument. 
        Identified lands owned by the State of Arizona or private 
        landowners may be acquired only with the consent of the 
        landowners, including the State of Arizona or private 
        landowners, and in accordance with State and Federal law. 
        Jurisdiction of lands identified on the Map that are under the 
        jurisdiction of a Federal agency other than the Department of 
        the Interior may be transferred to the Secretary with the 
        consent of the head of the other Federal agency.
            (2) Lands described.--The lands on the Map include--
                    (A) 80 acres of privately owned land on the west 
                boundary of the monument;
                    (B) 7.4 acres of Federal land, known as the Horvath 
                Site, administered by the Bureau of Indian Affairs, 
                located to the northeast of the monument;
                    (C) 3 parcels of land totaling 43.42 acres, owned 
                by the Archeological Conservancy, located to the east 
                of the monument;
                    (D) 4.5 acres of Federal land administered by the 
                Bureau of Land Management, located on the southwest 
                boundary of the Monument; and
                    (E) 126 acres of land owned by the State of 
                Arizona, known as Adamsville, located 4 miles east of 
                the monument.
            (3) Compensation.--As consideration for the acquisition of 
        State and private lands or interests in lands, the Secretary 
        shall pay fair market value for such lands or shall convey to 
        the State of Arizona and private land owners all or some 
        interest in Federal land or any other asset of equal value 
        within the State of Arizona, unless the lands or interests in 
        lands are donated.
    (e) Transfer of Land to BIA.--Jurisdiction over the approximately 
3.75 acres of Federal land identified for such purpose on the Map is 
hereby transferred from the National Park Service to the Bureau of 
Indian Affairs to allow for the widening and paving of the San Carlos 
Irrigation Project (Pima Lateral Canal).