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1955 Map of Monocline Ridge

Name: 1955 Topographic Map of Monocline Ridge
Creator: U.S. Geological Survey
Published: 1972
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1972

About this map

Monocline Ridge dominates this 1955 survey area, defining a stark landscape where the arid slopes of the Tumey Hills meet the intensive agricultural engineering of the Central Valley. The map captures a critical period of infrastructure development, featuring the California Aqueduct and the Chaney Pumping Station, markers of the massive state water projects of the mid-20th century. High elevations like Ciervo Hill transition into the valley floor, where a rigid grid of roads including South Avenue and Manning Avenue organizes the terrain.

Evidence of early industrial exploration is scattered across the hills, from a Prospect in Tumey Gulch to several pipelines and Water Tanks (Abandoned). The presence of a Grain Tank and Oil Tank near the pumping station highlights the dual economy of the region, balancing petroleum extraction with large-scale farming. A lone Jeep Trail winds through the southern ridges, providing the only access to the more difficult terrain along the Fresno and San Benito County line.