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1992 Map of Zamora

Name: 1992 Topographic Map of Zamora
Creator: U.S. Geological Survey
Published: 1997
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1997

About this map

The Dunnigan Hills dominate this section of the Sacramento Valley, where the transition from higher ground to the lowlands of the Colusa Basin Drainage Canal is clearly defined. The small settlement of Zamora sits at the eastern edge of the hills, serving as a focal point along the transportation corridor that parallels the Mt Diablo Meridian. The landscape is shaped by complex water management and resource extraction, with a significant Gas Field underlying the ridges and numerous watercourses like Bird Creek and Oat Creek draining toward the basin.

Agricultural and industrial patterns are evident in the irrigation systems and the presence of features like a Gravel Pit and Goodnow Slough. The survey also marks the boundary between Yolo County and Colusa County, showing how the early public land survey system defined the region's development. Landforms such as Oat Valley and Hungry Hollow provide a geographic context for the local cattle and farming operations typical of the era.