North Cascades National Park borders the international boundary in this 2020 topographic study, capturing a high-altitude wilderness area where the United States meets Canada. The landscape is defined by an intricate network of unnamed glacial drainage systems and stream headwaters that feed into the larger regional basins. This map highlights the strictly protected natural character of the terrain at the northernmost edge of Washington, where the lack of roads and settlements underscores the preservation of this remote mountain environment. The survey provides a clear view of the complex hydrography and elevation patterns that characterize this segment of the Cascades, serving as a vital record for understanding the transboundary geography of the Pacific Northwest.
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This is the sole edition of this map. No revisions or reprints were ever made.
1953 · Mt Challenger
USGS Topo · 1:62,500
1955 · Concrete
USGS Topo · 1:250,000
1958 · Concrete
USGS Topo · 1:250,000
1962 · Concrete
USGS Topo · 1:250,000
1969 · Hozomeen Mtn
USGS Topo · 1:24,000
1969 · Mt Spickard
USGS Topo · 1:24,000
1979 · Mt. Baker
USGS Topo · 1:100,000
1989 · Mt Redoubt
USGS Topo · 1:24,000
2002 · Hozomeen Mountain
USGS Topo · 1:24,000
2011 · Mount Spickard
USGS Topo · 1:24,000