Regulations last checked for updates: Feb 11, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
§ 35.582 - Definitions.

Federal Indian reservation. All land within the limits of any Indian reservation under the jurisdiction of the United States Government, notwithstanding the issuance of any patent, and, including rights-of-way running through the reservation.

Tribe. Any Indian Tribe, band, group, or community recognized by the Secretary of the Interior, exercising governmental authority over a federal Indian reservation.

authority: 42 U.S.C. 7401
cite as: 40 CFR 35.582