Title 16ConservationRelease 119-73

§228b Composition of park

Title 16 › Chapter CHAPTER 1— - NATIONAL PARKS, MILITARY PARKS, MONUMENTS, AND SEASHORES › Subchapter SUBCHAPTER XXIV— - GRAND CANYON NATIONAL PARK › § 228b

Last updated Apr 6, 2026|Official source

Summary

Add about 1,200,000 acres to Grand Canyon National Park, while respecting any valid existing rights under the Navajo Boundary Act of 1934. The added lands and waters are those shown on the map called Boundary Map, Grand Canyon National Park, number 113–20, 021 B, dated December 1974. A copy of that map will be kept on file and open to the public at the National Park Service, Department of the Interior. The Grand Canyon National Monument and the Marble Canyon National Monument are ended for the purposes of sections 228a–228j. The Secretary of the Interior must study the former monument lands known as Tuckup Point, Slide Mountain, and Jensen Tank to see if any part is unsuitable for the park and whether it should be removed. The Secretary must report findings and recommendations to Congress no later than one year from January 3, 1975.

Full Legal Text

Title 16, §228b

Conservation — Source: USLM XML via OLRC

(a)In order to add to the Grand Canyon National Park certain prime portions of the canyon area possessing unique natural, scientific, and scenic values, the Grand Canyon National Park shall comprise, subject to any valid existing rights under the Navajo Boundary Act of 1934, all those lands, waters, and interests therein, constituting approximately one million two hundred thousand acres, located within the boundaries as depicted on the drawing entitled “Boundary Map, Grand Canyon National Park,” numbered 113–20, 021 B and dated December 1974, a copy of which shall be on file and available for public inspection in the offices of the National Park Service, Department of the Interior.
(b)For purposes of sections 228a to 228j of this title, the Grand Canyon National Monument and the Marble Canyon National Monument are abolished.
(c)The Secretary of the Interior shall study the lands within the former boundaries of the Grand Canyon National Monument commonly known as the Tuckup Point, Slide Mountain, and Jensen Tank areas to determine whether any portion of these lands might be unsuitable for park purposes and whether in his judgment the public interest might be better served if they were deleted from the Grand Canyon National Park. The Secretary shall report his findings and recommendations to the Congress no later than one year from January 3, 1975.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

The Navajo Boundary Act of 1934, referred to in subsec. (a), is act June 14, 1934, ch. 521, 48 Stat. 960, which was not classified to the Code.

Reference

Citations & Metadata

Citation

16 U.S.C. § 228b

Title 16Conservation

Last Updated

Apr 6, 2026

Release point: 119-73