The present location of Rio Vista is several miles south of the original settlement. Colonel Nathan H. Davis founded "Brazos del Rio" near the entrance of Cache Slough at the Sacramento River, on the Rancho Los Ulpinos Mexican land grant, in 1858. The settlement was renamed "Rio Vista" before a flood in 1862 that resulted in the town moving to its present location on higher ground. The city's name combines the Spanish words for "river" and "view." Post authorities established office in 1858. The community was officially incorporated as Rio Vista on December 30, 1893. The newspaper of record there is the River News-Herald and Isleton Journal, established in 1890.