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1982 Map of Courtright Reservoir

Name: 1982 Topographic Map of Courtright Reservoir
Creator: U.S. Geological Survey
Published: 1983
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1983

About this map

The Courtright Reservoir and Wishon Reservoir dominate this high-elevation landscape within the Sierra National Forest. The map documents a sophisticated hydroelectric infrastructure managed by Pacific Gas and Electric Company, featuring the Underground Powerhouse, multiple Surge Chambers, and a Substation near Wishon Dam. This industrial footprint exists alongside recreational and wilderness sites like the Marmot Rock Campground and the edge of the John Muir Wilderness.

Tracing the path of Helms Creek and the North Fork Kings River, the survey reveals a network of high-country camps such as Chamberlains Camp, Lacy Camp, and Moore Boys Camp. Faded tracks and 4WD roads connect these remote locations to landmarks like Maxson Dome and Cape Horn. Historical resource extraction is noted at a Quarry and a Prospect Mine, reflecting the varied human activity in the region during the early 1980s.