Title 16ConservationRelease 119-73not60

§228b Composition of Park

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

Last updated Apr 5, 2026|Official source

Summary

Add about one million two hundred thousand acres to Grand Canyon National Park, subject to any valid rights under the Navajo Boundary Act of 1934. The new park lines are shown on the "Boundary Map, Grand Canyon National Park," number 113–20, 021 B, dated December 1974, on file at the National Park Service. Under sections 228a–228j, Grand Canyon National Monument and Marble Canyon National Monument are abolished. The Secretary of the Interior must study lands that used to be part of Grand Canyon National Monument (Tuckup Point, Slide Mountain, and Jensen Tank) to see if any should be removed from the park and 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 5, 2026

Release point: 119-73not60