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2022 Map of Trinity Dam

Name: 2022 Topographic Map of Trinity Dam
Creator: U.S. Geological Survey
Published: 2022
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2022

About this map

Trinity Lake dominates the upper half of this modern topographical survey, reaching its long fingers into the many gulches and canyons of the Trinity National Forest. The map documents a landscape defined by water and altitude, where the submerged terrain of the Papoose Arm and Ridgeville Islands contrasts with the surrounding mountain ridges. For genealogists and local historians, the northern portion of the map preserves the location of Ridgeville and the Ridgeville Cem, alongside several named flats such as Hayward Flat and Chicken Flat.

Resource extraction and recreational access are evident through features like the Rock Pit near Pettijohn Mtn and the extensive network of trails and roads. Routes like the Lewiston Lakeshore Trl and Buckeye Arm Road weave through the complex topography of Montgomery Ridge and Buckeye Ridge. The drainage patterns are clearly delineated, tracing the flow from Stoney Cr and Buckeye Creek into the reservoir, providing a clear view of the modern hydroelectric and wilderness management in this part of California.