104 STAT. 4494 PUBLIC LAW 101-628—NOV. 28, 1990 16 USC 460eee-2. Mexico. 16 USC 460fff. (f) COOPERATIVE AGREEMENTS.—For purposes of administering the recreation area, the Secretary may enter into cooperative agreements with any Federal agency, the State of Texas, or any poUtical subdivision thereof, including the Canadian River Municipal Water Authority, for the rendering, on a reimbursable basis, of rescue, firefighting, law enforcement, fire preventive assistance, and other needs. The Secretary may enter into a cooperative agreement with the city of Fritch, Texas, to develop and operate a joint venture information center. Federal funds may be expended on non-Federal lands and improvements through cooperative agreements for the purpose of this section on a 50-50 matching basis. SEC. 504. AUTHORIZATION OF APPROPRIATIONS. There are authorized to be appropriated such sums as may be necessary to carry out the purposes of sections 502 and 503 of this Act. SEC. 505. ESTABLISHMENT OF AMISTAD NATIONAL RECREATION AREA. (a) In order to— (1) provide for public outdoor recreation use and enjoyment of the lands and waters associated with the United States portion of the reservoir known as Lake Amistad, located on the boundary between the State of Texas and Mexico, and (2) protect the scenic, scientific, cultural, and other value contributing to the public enjoyment of such lands and waters, there is hereby established the Amistad National Recreation Area (hereafter in this section and section 506 referred to as the "recreation area"). OJ) The recreation area shall consist of the Federal lands, waters, and interests therein within the area generally depicted on the map entitled "Boundary Map, Proposed Amistad National Recreation Area", numbered 621/20,013-B, and dated July 1969. The map shall be on file and available for public inspection in the offices of the National Park Service, Department of the Interior. The Secretary of the Interior (hereafter in this Act referred to as the "Secretary") may from time to time make minor revisions in the boundary of the recreation area, but the total acreage of the recreation area may not exceed 58,500 acres. Within the boundary of the recreation area, the Secretary may acquire lands and interests in lands by purchase with donated or appropriated funds, exchange, or transfer without reimbursement from any Federal agency. 16 USC 460fff-l. SEC. 506. ADMINISTRATION. (a) The Secretary shall administer the recreation area in accordance with applicable provisions of this Act and the provisions of law generally applicable to units of the national park system, including the Act entitled "An Act to establish a National Park Service, and for other purposes", approved August 25, 1916 (39 Stat. 535; 16 U.S.C. 1, 2-4), and the Act of August 7, 1946 (60 Stat. 885). In the administration of such recreation area, the Secretary may utilize such statutory authority as may be available to him for the protection of natural and cultural resources as he deems necessary to carry out the purposes of this Act. Nothing in this Act shall be construed to amend or alter the responsibilities of the International Boundary and Water Commission, United States and Mexico, under any applicable treaty.