---
kind: "section"
citation: "16 U.S.C. § 228a"
title: "16"
title_heading: "Conservation"
number: "228a"
heading: "Enlargement of boundaries; statement of purpose"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/16/228a"
units:
  - "Chapter 1 — National Parks, Military Parks, Monuments, and Seashores"
  - "Subchapter XXIV — Grand Canyon National Park"
---

# §228a. Enlargement of boundaries; statement of purpose


It is the object of sections 228a to [228j](/usc/16/228j.md) of this title to provide for the recognition by Congress that the entire Grand Canyon, from the mouth of the Paria River to the Grand Wash Cliffs, including tributary side canyons and surrounding plateaus, is a natural feature of national and international significance. Congress therefore recognizes the need for, and in sections 228a to [228j](/usc/16/228j.md) of this title provides for, the further protection and interpretation of the Grand Canyon in accordance with its true significance.


## Source credit

(Pub. L. 93–620, § 2, Jan. 3, 1975, 88 Stat. 2089.)

## Notes

### Statutory Notes and Related Subsidiaries

### Short Title

For short title of sections 228a to 228j of this title as the “Grand Canyon National Park Enlargement Act”, see Short Title note set out under section 221 of this title.