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1950 Map of Trinity Dam, 1975 Print
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1950 Map of Trinity Dam

USGS Topo · Published 1975

About this map

The Trinity Dam and its massive reservoir, Clair Engle Lake, dominate the southeastern portion of this map, representing a significant era of water management and infrastructure in northern California. Before the water rose, the area supported various extractive and pioneer industries, evidenced by the Ridgeville (Site) and its associated Ridgeville Cemetery. Early logging and processing operations like Covington Mill were essential to the local economy, while mining activity was scattered across the terrain at the Globe Mine, Little Anna Mine, and Woodrat Mine.

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Map Details

Date Portrayed1950
Date Published1975
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:62,500
Physical Dimensions17.3 x 21.9 inches

Editions of this 1950 Trinity Dam Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain