
Nicolai Mtn and the surrounding Nicolai Ridge define this upland portion of the Northern Oregon Coast Range. This high ground serves as the headwaters for a dense network of drainages, including Gnat Creek flowing north and Fishhawk Creek moving toward the southeast. The landscape is characterized by a complex system of logging and resource roads, such as the Big Creek Mainline, Foster Mainline, and the Nicolai-Beneke Grade, which trace the contours of the ridges and creek valleys. In the far southeastern corner, the terrain descends toward the Nehalem Valley. Notable water bodies like Lost Lake and various forks of Plympton Creek are interspersed throughout the heavily timbered drainages, illustrating the drainage patterns that have historically supported the region's timber industry.
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This is the sole edition of this map. No revisions or reprints were ever made.
1939 · Saddle Mountain
USGS Topo · 1:62,500
1940 · Svensen
USGS Topo · 1:62,500
1941 · Keasey
USGS Topo · 1:62,500
1941 · Cathlamet
USGS Topo · 1:62,500
1943 · Keasey
USGS Topo · 1:62,500
1943 · Saddle Mtn.
USGS Topo · 1:62,500
1948 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1953 · Hoquiam
USGS Topo · 1:250,000