1952 Map of Rio Vista

About this map

The Sacramento River and San Joaquin River converge in this intricate portrait of the California Delta, where a complex network of levees and sloughs defines the agricultural landscape. The town of Rio Vista serves as a focal point, showing its grid and the Rio Vista High School just south of the Montezuma Hills. Numerous sunken tracts and reclaimed islands, such as Franks Tract and Webb Tract, illustrate the perpetual engineering required to manage this low-lying region. Smaller river settlements like Isleton, Locke, and Walnut Grove appear along the northern waterways, supported by river landings and the Liberty Island Ferry. The map also captures the early energy development of the region, dotted with numerous Gas Wells across Brannan Island and Twitchell Island, marking the intersection of the delta's traditional farming economy and its growing industrial value.