Loading map...

2019 Map of McGrath A-1 SE

Name: 2019 Topographic Map of McGrath A-1 SE
Creator: U.S. Geological Survey
Published: 2019
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2019

About this map

The Alaska Range defines the high-altitude topography of this Bethel Census Area landscape, where natural corridors through the peaks have long served as vital pathways. Goodman Pass and Houston Pass mark significant navigational breaks in the mountain terrain, providing essential transitions between drainage basins. This 2019 survey documents a complex hydrological network centered on the Happy River, which collects flow from several tributaries including Denny Cr and the waters emanating from Ptarmigan Valley.

The presence of high-latitude water bodies like Hagen Lake and Marsh Lake suggests a landscape of glacial origin, where drainage is often interrupted by the massive scale of the surrounding range. Small seasonal waterways such as Ptarmigan Cr and Puntilla Cr illustrate the intricate watershed patterns that define this unpopulated wilderness area. The map serves as a contemporary record of these geological and hydrological features in a region where the landforms themselves dictate the possibilities for travel and survival.