1965 Map of Yuma East

About this map

The Colorado River and Gila River converge in this mid-1960s study, defining a landscape of intensive irrigation and military presence at the California-Arizona border. The city of Yuma sits at the western edge, home to the Yuma Territorial Prison and the St Thomas Yuma Indian Mission, which overlooks the river junction. Extensive agricultural development is evident across the Yuma Mesa and the South Gila Valley, where a complex network including the Main Canal and South Gila Canal feeds the desert soil.