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2019 Map of Ruby A-5 SW

Name: 2019 Topographic Map of Ruby A-5 SW
Creator: U.S. Geological Survey
Published: 2019
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2019

About this map

The Ruby-Poorman Road (Extension) cuts through the northern reaches of this Alaskan interior landscape, providing a rare human-made corridor through a region defined by its complex drainage systems. Water dictates the geography here, as numerous creeks including Tenderfoot Cr, Duncan Cr, and Poorman Cr navigate the undulating terrain of the Yukon-Koyukuk Census Area. These waterways eventually feed toward the S Fork Sulatna River, which anchors the southeastern corner of the quadrangle.

The topography is marked by a series of prominent ridges and valleys, with drainage names like Bonanza Cr and Glacier Cr hinting at the mineral-rich history of the broader Ruby district. While the map is predominantly a study of natural hydrography and elevation, the presence of the road extension highlights the continued importance of this route for accessing the remote interior south of the Yukon River.