2017 Map of Sumdum D-4 SW

About this map

Tongass National Forest encompasses the vast majority of this landscape, reflecting the remote and undeveloped character of Southeast Alaska in the early 21st century. The map highlights a significant administrative boundary where the Hoonah-Angoon Census Area meets the Petersburg Borough, a line that snakes through the high-elevation terrain of the Coast Mountains. This survey, produced by the U.S. Geological Survey in cooperation with the U.S. Forest Service, documents a region defined by extreme vertical relief and complex glacial topography rather than human settlement. The absence of roads or structures emphasizes the wilderness value of this section of the national forest, providing a precise record of the natural contours and drainage patterns that dictate the geography of this coastal range.