was designated under the Bureau of Land Management on this date in 2000.
Adjacent to rapidly expanding communities, the 71,000-acre Agua Fria National Monument is approximately 40 miles north of central Phoenix. The monument encompasses two mesas and the canyon of the Agua Fria River. Elevations range from 2,150 feet above sea level along the Agua Fria Canyon to about 4,600 feet in the northern hills. This expansive mosaic of semi-desert area, cut by ribbons of valuable riparian forest, offers one of the most significant systems of prehistoric sites in the American Southwest. In addition to the rich record of human history, the monument contains outstanding biological resources.