
Mt Sumdum rises prominently within the Tongass National Forest, marking a landscape defined by dramatic glacial activity and complex administrative boundaries. This 2021 survey illustrates the glacial extent of the Sumdum Glacier and the drainage patterns of Powers Cr, located at the intersection of the Hoonah-Angoon Census Area and Petersburg Borough. The topography here is dictated by high-altitude ice fields and deep-cut creeks, showcasing the transitional zone between these two major Southeast Alaska jurisdictions. The lack of modern road infrastructure emphasizes the isolation of this corner of the state, where transit is governed by the natural contours of the glacier and the steep relief of the surrounding peaks.
9 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1948 · Sumdum C-5
USGS Topo · 1:63,360
1948 · Sumdum D-5
USGS Topo · 1:63,360
1951 · Sumdum C-5
USGS Topo · 1:63,360
1952 · Sumdum
USGS Topo · 1:250,000
1955 · Sumdum D-5
USGS Topo · 1:63,360
1960 · Sumdum D-4
USGS Topo · 1:63,360
1961 · Sumdum C-4
USGS Topo · 1:63,360
1961 · Sumdum
USGS Topo · 1:250,000
1994 · Sumdum D-5
USGS Topo · 1:63,360
1994 · Sumdum D-4
USGS Topo · 1:63,360