Mount Baker National Forest and Snoqualmie National Forest converge in this high-elevation region of Snohomish County. The landscape is defined by the steep divides of Green Mtn and Wiley Ridge, which channel drainage toward the South Fork Stillaguamish River and the Pilchuck River. This modern survey details a complex network of forest development roads, such as Nat For Dev Rd 4110, providing access to remote alpine water bodies including Boardman Lake, Canyon Lake, and the Ashland Lakes chain. Historically significant for its timber and early prospecting, the area around Gold Basin shows the modern infrastructure of the Mountain Loop Highway Bridge and various passings like Granite Pass, reflecting the area's continued use for resource management and backcountry recreation.
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This is the sole edition of this map. No revisions or reprints were ever made.
1899 · Stillaguamish
USGS Topo · 1:125,000
1901 · Stilaguamish
USGS Topo · 1:125,000
1921 · Sultan
USGS Topo · 1:125,000
1923 · Sultan
USGS Topo · 1:125,000
1955 · Concrete
USGS Topo · 1:250,000
1956 · Monroe
USGS Topo · 1:62,500
1956 · Granite Falls
USGS Topo · 1:62,500
1957 · Silverton
USGS Topo · 1:62,500
1957 · Index
USGS Topo · 1:62,500
1957 · Wenatchee
USGS Topo · 1:250,000