Culmback Dam and the expansive Spada Lake reservoir dominate the upper reaches of the Sultan River, serving as critical infrastructure within the City of Everett Watershed. This high-elevation landscape is defined by the steep drainage of the Sultan Basin and the winding course of the Pilchuck River to the north. Resource extraction and forest management are evident through the presence of the Lockwood Mine and a dense network of Forest Service roads like Sultan Basin Rd and Corona Mine Rd.
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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
1953 · Sultan
USGS Topo · 1:24,000
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