43 CFR 423.28: Memorials and reburials.

(a) Memorials. You must not bury, deposit, or scatter human remains (except as noted in paragraph (b) of this section), or place memorials, markers, vases, or plaques on or in Reclamation facilities, lands, or waterbodies. See § 423.35 for information on animal remains.

(b) Native American Graves Protection and Repatriation Act (NAGPRA) reburials. You must not rebury human remains on or in Reclamation facilities, lands, or waterbodies unless permitted under subpart D of this part. An Indian Tribe official or the lineal descendants of federally recognized Tribes may apply for a permit issued pursuant to subpart D of this part to rebury NAGPRA (25 U.S.C. 3001-3013) human remains or cultural items (funerary objects, sacred objects, or objects of cultural patrimony) on or in Reclamation facilities, lands, or waterbodies.