25 CFR § 1000.1390 - Is the Secretary required to take into account the Indigenous Knowledge of Tribes/Consortia when preparing environmental studies under NEPA, NHPA, and related provisions of other law and regulations?
---
identifier: "/us/cfr/t25/s1000.1390"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 1000.1390 - Is the Secretary required to take into account the Indigenous Knowledge of Tribes/Consortia when preparing environmental studies under NEPA, NHPA, and related provisions of other law and regulations?"
title_number: 25
title_name: "Indians"
section_number: "1000.1390"
section_name: "Is the Secretary required to take into account the Indigenous Knowledge of Tribes/Consortia when preparing environmental studies under NEPA, NHPA, and related provisions of other law and regulations?"
chapter_name: "OFFICE OF THE ASSISTANT SECRETARY, INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR"
part_number: "1000"
part_name: "ANNUAL FUNDING AGREEMENTS UNDER THE TRIBAL SELF-GOVERNMENT ACT AMENDMENTS TO THE INDIAN SELF-DETERMINATION AND EDUCATION ACT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "25 U.S.C. 5373"
regulatory_source: "89 FR 100245, Dec. 11, 2024, unless otherwise noted."
cfr_part: "1000"
---
# 1000.1390 Is the Secretary required to take into account the Indigenous Knowledge of Tribes/Consortia when preparing environmental studies under NEPA, NHPA, and related provisions of other law and regulations?
Yes, Council on Environmental Quality (CEQ) regulations direct agencies to make use of high-quality information including reliable data and resources, models, and Indigenous Knowledge, in carrying out their responsibilities under NEPA. The Secretary recognizes that Tribes/Consortia hold relevant information and perspectives regarding the environment, and Indigenous Knowledge can inform the Secretary's environmental analysis. Similarly, section 106 of NHPA (54 U.S.C. 306108) establishes a process to ensure that the Secretary take into account the effects of a project the Department carries out, licenses, or assists on historic properties.