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1959 Map of Monticello Dam

Name: 1959 Topographic Map of Monticello Dam
Creator: U.S. Geological Survey
Published: 1988
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1988

About this map

Monticello Dam and the massive basin of Lake Berryessa dominate this landscape on the boundary of Napa, Yolo, and Solano Counties. The map, based on late-1950s data, illustrates the critical water infrastructure of the Vaca Mountains region, where Putah Creek was harnessed for the Solano Project. While the southern portion is defined by this modern engineering feat, the northern and eastern sections retain a distinct ranching character, marked by the Cowell Ranch, Scott Ranch, and Chapmans Upper Ranch.

Tracing the drainage patterns reveals a network of canyons like Blue Canyon and Thompson Canyon, alongside several mountain springs such as Morris Spring and Adobe Spring. For genealogists, the rural landscape preserved here includes the location of a lone Cemetery near Union School Slough and early resource extraction efforts indicated by several Gas Wells on the eastern plains near the Solano-Yolo line.