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1923 Map of Monocline Ridge
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1923 Map of Monocline Ridge

USGS Topo · Published 1923

About this map

Monocline Ridge dominates this 1921 survey of the Fresno County landscape, revealing a period of early infrastructure and geographic education in the California foothills. The map captures the remote Tumey Gulch School positioned near the head of a winding drainage, serving as a focal point for a sparse rural population. The presence of an Oil Pumping Station in the eastern flats signals the region's developing petroleum industry, connected to the wider world by a network of unimproved roads and survey tracks. Surveyed by E.T.Walker, the topography illustrates the transition from the steep, dissected terrain of the Tumey Hills to the gentler alluvial slopes where ephemeral watercourses like Tumey Gulch lose their definition. This sheet provides a detailed record of land ownership boundaries and elevation before modern agricultural and industrial expansion reshaped the valley floor.

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Map Details

Date Portrayed1923
Date Published1923
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:31680
Physical Dimensions16.4 x 19.9 inches

Editions of this 1923 Monocline Ridge Map

Historical Maps of Fresno County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain