25 CFR §1000.1390

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.