1970 Map of Mt. Manchester

About this map

The Colorado River serves as the focal point for this 1970s era survey, marking the intersection of three states at a time of growing development along its banks. The map documents the northern reaches of the Fort Mojave Indian Reservation and the expanding footprints of Riviera and Bullhead City on the Arizona side. High above the river valley, the terrain is dominated by the Newberry Mountains and the Dead Mountains, with the prominent peak of Mt Manchester rising in the southwest. A notable historical boundary, the Von Schmidt Line, cuts across the desert landscape, representing the original 1872 survey of the California-Nevada border. Evidence of early human history is recorded with a site of Petroglyphs near the mountains, while modern infrastructure like Pipelines and a Gaging Station illustrate the river's management for the surrounding arid region.