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1982 Map of Trinity Dam

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

USGS Topo · Published 1982

About this map

Trinity Dam and the sprawling waters of Clair Engle Lake dominate this 1982 provisional study of the California mountains. The landscape is defined by the transformation of the Trinity River canyon, where the massive dam and its associated Powerplant replaced earlier canyon floor settlements. Traces of the region's mining heritage remain visible through several named sites, including a Hydraulic Mine near Stuart Fork Picnic Area and smaller operations like the Buckeye Mine and Little Elsie Mine tucked into the steep drainages of the Trinity National Forest.

Evidence of displaced communities is marked by Ridgeville (Site) and the Ridgeville Islands, remnants of a town submerged or bypassed by the reservoir. The map documents a transition to a recreation-based economy, noting numerous campsites such as Minersville Campground and Ackerman Campground along the shoreline. Navigation through the rugged ridges, including Stoney Ridge and Buck Ridge, is facilitated by a network of seasonal routes and a Jeep Trail.