
Sauvie Island dominates this confluence of major waterways, where the Columbia River and Willamette River meet the Multnomah Channel. This landscape is defined by its complex hydrology, featuring numerous interior water bodies such as Sturgeon Lake, Steelman Lake, and Round Lake. The intricate network of sloughs, including Mud Slough and Broad Slough, highlights the low-lying island's historical susceptibility to river levels, necessitating the extensive Dike system shown along its northern reaches.
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4 editions found
1897 · Portland
USGS Topo · 1:62,500
1905 · Portland
USGS Topo · 1:62,500
1915 · Hillsboro
USGS Topo · 1:62,500
1918 · Hillsboro
USGS Topo · 1:62,500
1922 · St. Helens
USGS Topo · 1:62,500
1940 · Hillsboro
USGS Topo · 1:62,500
1940 · Portland
USGS Topo · 1:62,500
1940 · La Center
USGS Topo · 1:62,500
1941 · St Helens
USGS Topo · 1:62,500
1943 · St Helens
USGS Topo · 1:62,500