16 U.S.C. § 228b (2024)
This is the official text of 16 U.S.C. § 228b (2024), part of Federal (US Code)’s United States Code — the codified general and permanent federal statutes of the United States, organized into more than 50 numbered titles by subject.
Not legal advice. This page reproduces the official text of a government statute for reference only. Laws change, and how a statute applies depends on your specific facts. For advice about your situation, consult a licensed attorney in your state.
Composition of park
Official statutory text
(a) Additional lands, waters, and interests therein
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) Abolition of Grand Canyon and Marble Canyon National Monuments
For purposes of sections 228a to 228j of this title, the Grand Canyon National Monument and the Marble Canyon National Monument are abolished.
(c) Study and report to Congress of suitability of lands included within enlarged boundaries; submission date
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.
(Pub. L. 93–620, §3, Jan. 3, 1975, 88 Stat. 2090.)
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.
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) Abolition of Grand Canyon and Marble Canyon National Monuments
For purposes of sections 228a to 228j of this title, the Grand Canyon National Monument and the Marble Canyon National Monument are abolished.
(c) Study and report to Congress of suitability of lands included within enlarged boundaries; submission date
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.
(Pub. L. 93–620, §3, Jan. 3, 1975, 88 Stat. 2090.)
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.
Status: in_force · Read it on the official government site
Need a lawyer in Federal (US Code)?
Find a Federal (US Code) lawyer
About this page: Statute text is reproduced from official government publishers via the
Open US Law dataset
(Vaquill AI, snapshot v2026.08, CC BY 4.0). Primary legislative text like this is public domain under the government-edicts doctrine
(Georgia v. Public.Resource.Org, 2020). We link every section back to its official source so you can verify it independently.