The agreement will be signed Tuesday in a ceremony in Pierre, SD by representatives of the corps, up to two dozen tribes and agencies from South Dakota, North Dakota, Montana and Nebraska.
Colonel Kurt Ubbelohde is commander of the corps' Omaha District. He said the National Historic Preservation Act requires federal agencies to explain how they will preserve historic and cultural sites on federal land.
Jay Vogt is South Dakota's historic preservation officer. He said the corps will identify historic sites, monitor areas for erosion and vandalism, establish a law enforcement system, provide educational programs and signs, and protect sensitive information.