1961 Map of Delta Ranch

About this map

The San Joaquin River and Salt Slough define the northern reaches of this landscape on Turner Island, where an intricate network of irrigation and drainage infrastructure supported a massive ranching economy. Large agricultural holdings such as the Miller and Lux Ranch and San Juan Ranch characterize the settlement pattern during this era, interspersed with recreational outposts like the O'Banion Gun Club and Sierra Gun Club. The map reveals a complex water management system featuring the San Juan Canal, Belmont Canal, and numerous bypass ditches like the South Bypass Lift Ditch. In the south, the Southern Pacific rail line and Pacific Grade run parallel to the Arroyo Canal, highlighting the vital link between water-intensive agriculture and the rail-and-river transport corridors of the San Joaquin Valley. Significant land features include the Duck Ponds and various controlled inundation areas designed for subsidence management.