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2017 Map of Bonneville Dam

Name: 2017 Topographic Map of Bonneville Dam
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

The Columbia River gorge landscape is dominated by the monumental engineering of the Bonneville Dam, which spans the waterway between Washington and Oregon. This modern survey details a complex geography of river islands like Bradford Island and Robins Island, alongside historic landmarks such as the Bridge of the Gods and Fort Rains. The area is a nexus of transportation and recreation, where the Evergreen Hwy and Pacific Crest National Scenic Trail traverse the steep terrain of the Gifford Pinchot National Forest.

Genealogists and local historians can locate specific sites such as the Iman Cem and the Freddie Masterson Grave Cascade Locks Cem near the town of Stevenson. The map also captures the thermal features of the region, including Moffetts Hot Springs, and identifies unique geological formations like Sacagawea and Papoose Rocks. The industrial and infrastructure legacy of the Columbia is evident through the presence of the Toothrock Tunnel 4555 and multiple local airstrips, including the Cascade Locks State Airport.