Napavine anchors the northwestern corner of this landscape, where the Newaukum River system branches into several forks. This Lewis County terrain is defined by a series of distinct upland flats, including Newaukum Prairie, Jackson Prairie, and Lacamas Prairie. These open areas historically supported early agriculture and remain focal points for local settlement. The drainage network is complex, featuring the North Fork Newaukum River, the Middle Fork Newaukum River, and the South Fork Newaukum River, which converge as they move westward.
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This is the sole edition of this map. No revisions or reprints were ever made.
1916 · Chehalis
USGS Topo · 1:125,000
1941 · Olequa
USGS Topo · 1:62,500
1942 · Toutle
USGS Topo · 1:62,500
1943 · Willapa
USGS Topo · 1:62,500
1953 · Hoquiam
USGS Topo · 1:250,000
1953 · Toutle
USGS Topo · 1:62,500
1953 · Castle Rock
USGS Topo · 1:62,500
1954 · Onalaska
USGS Topo · 1:62,500
1954 · Centralia
USGS Topo · 1:62,500
1957 · Hoquiam
USGS Topo · 1:250,000