
The Columbia River corridor serves as the industrial and geographical heart of this 1961 survey, updated through the mid-1970s. Industrial development is prominent along the shores, anchored by the massive Aluminum Plant in Troutdale and the Port of Camas/Washougal. The transition from the high grounds of Prune Hill and Mill Plain in Washington down to the river islands like Government Island and Lady Island illustrates the complex hydrology of the sloughs and channels that defined local transport.
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3 editions found
1897 · Portland
USGS Topo · 1:62,500
1905 · Portland
USGS Topo · 1:62,500
1911 · Boring
USGS Topo · 1:48,000
1914 · Boring
USGS Topo · 1:62,500
1914 · Oregon City
USGS Topo · 1:62,500
1916 · Estacada
USGS Topo · 1:125,000
1918 · Troutdale
USGS Topo · 1:62,500
1934 · Troutdale
USGS Topo · 1:48,000
1939 · Oregon City
USGS Topo · 1:62,500
1940 · Boring
USGS Topo · 1:62,500