2020 Map of Trenholm
USGS Topo · Published 2020About this map
Trenholm and Canaan anchor this upland landscape in Columbia County, where a complex network of creeks and ridges defines the settlement pattern. The area is characterized by high-elevation landmarks such as Serafin Point and several distinct basins. Water resources are central to the geography here, from the headwaters of the Clatskanie River and Little Clatskanie River to the Salmonberry Reservoir and its namesake Salmonberry Cr.
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Map Details
Editions of this 2020 Trenholm Map
This is the sole edition of this map. No revisions or reprints were ever made.
Other maps of this area
1919 · Mayger
USGS Topo · 1:62,500
1921 · Kalama
USGS Topo · 1:62,500
1922 · St. Helens
USGS Topo · 1:62,500
1940 · Vernonia
USGS Topo · 1:62,500
1941 · St Helens
USGS Topo · 1:62,500
1941 · Clatskanie
USGS Topo · 1:62,500
1943 · Vernonia
USGS Topo · 1:62,500
1943 · St Helens
USGS Topo · 1:62,500
1948 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000