In 2011, the Programmatic Agreement Among the Bureau of Reclamation, the Advisory Council on Historic Preservation, the New Mexico State Historic Preservation Officer, the Navajo Nation, the Bureau of Land Management, and the Bureau of Indian Affairs Regarding the Consideration and Management of Effects on Historic Properties Arising from Construction of the Navajo-Gallup Water Supply Project, New Mexico was executed. In accordance with Stipulation XVI, the Bureau of Reclamation is proposing an amendment to the agreement to extend its duration.