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2017 Map of Brownlee Dam

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

USGS Topo · Published 2017

About this map

Brownlee Dam and its expansive impoundment dominate the borderlands of Baker County, Oregon, and Adams County, Idaho. This 2017 survey details the complex hydraulic geography of the Snake River canyon, where the river transitions from the Brownlee Reservoir into the Oxbow Reservoir to the north. The rugged Hells Canyon corridor is marked by steep elevation changes, showing the influence of the river's flow through Wildhorse Rapids and past Oregon Island.

Remote settlements like Brownlee and landmarks such as Officer Butte highlight the sparse human footprint in this canyon landscape. Local history and topography are captured in features like Ferry Canyon and Densley Spring, which point to early transit and water sources in the high desert. The map tracks the winding course of tributaries including the Wildhorse River and Brownlee Cr, providing a precise look at the drainage patterns defining this interstate boundary.