2017 Map of McGrath A-1 SE

About this map

Goodman Pass and Houston Pass provide natural corridors through this high-altitude section of the Alaska Range, situated at the border of the Bethel Census Area and the Matanuska-Susitna Borough. The landscape is defined by its drainage systems, where the Happy River serves as a central artery fed by mountain tributaries including Denny Cr and Ptarmigan Cr. Within the broad Ptarmigan Valley, the terrain is punctuated by alpine water bodies like Hagen Lake and Marsh Lake. The map illustrates the complex topographical relationship between the river basins and the high mountain saddles, documenting the natural geography of this remote interior region as it was surveyed in the early twenty-first century.