Regulations United States Grand Canyon National Park
Thunder River
Camping & bivouac
Regulations on 31 October 2026
Signs at the site and later resolutions prevail; check the source.
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Prohibited all year
Camping & bivouac · All year
In force on 31 October 2026
(b) Restricted Areas: The following restrictions apply within the following backcountry use areas:
[…]
(11) Thunder River (AW7): The following area within the vicinity of Tapeats Creek Designated Camp is closed to overnight camping: Thunder River drainage from the edge of Surprise Valley at the 3800’ contour to its confluence with Tapeats Creek. The closure affects approximately one mile of the drainage.
Published by National Park Service, 16 Jun 2026 · Grand Canyon National Park Superintendent’s Compendium, June 2026
In Grand Canyon National Park
Regulated zone
Grand Canyon National Park
These hold everywhere inside the boundary, whether or not a site is marked.
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Permit required
Camping & bivouac · All year
In force on 31 October 2026
(53) Backcountry Overnight Use Permits: All overnight use within the backcountry of Grand Canyon National Park requires a Backcountry Permit unless it is explicitly covered by a Colorado River Rafting Permit. Backcountry users must have the permit in their possession while in the Backcountry and follow all rules, regulations, and permit conditions including those listed on the Backcountry Permit.
Published by National Park Service, 16 Jun 2026 · Grand Canyon National Park Superintendent’s Compendium, June 2026
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Permit required
Caving · All year
In force on 31 October 2026
(54) Cave Entry Permits: Because of their sensitive and sometimes dangerous nature, public presence, use and access in all caves, as defined above in the definitions section of this document, is prohibited without a valid permit authorized by the superintendent explicitly authorizing use of the cave. 36 CFR § 1.5 and 1.6
Published by National Park Service, 16 Jun 2026 · Grand Canyon National Park Superintendent’s Compendium, June 2026