16 U.S.C. § 121: Establishment; boundaries

In order to preserve for the benefit, education, and inspiration of the people of the United States certain unique and ancient volcanic features, including Crater Lake, together with significant forest and fish and wildlife resources, there is hereby established the Crater Lake National Park in the State of Oregon. The boundary of the park shall encompass the lands, waters, and interests therein within the area generally depicted on the map entitled, “Crater Lake National Park, Oregon”, numbered 106–80–001–A, and dated March 1981, which shall be on file and available for public inspection in the office of the National Park Service, Department of the Interior. Lands, waters, and interests therein within the boundary of the park which were within the boundary of any national forest are excluded from such national forest and the boundary of such national forest is revised accordingly.