
The delta of the North Fork Skagit River creates a complex landscape of shifting sediments and low-lying landforms where the river meets Skagit Bay. Central to this environment is Fir Island, protected by an extensive network of Levee systems and drained by numerous waterways including Browns Slough and Dry Slough. The interaction between the river and the tide is evident in the broad expanses of Mud and Sand that stretch between Craft Island and Bald Island.
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1911 · Mount Vernon
USGS Topo · 1:125,000
1939 · Coupeville
USGS Topo · 1:62,500
1940 · Mt Vernon
USGS Topo · 1:62,500
1943 · Mt Vernon
USGS Topo · 1:62,500
1943 · Stanwood
USGS Topo · 1:62,500
1943 · Deception Pass
USGS Topo · 1:62,500
1951 · Deception Pass
USGS Topo · 1:62,500
1953 · Camano
USGS Topo · 1:24,000
1956 · Stanwood
USGS Topo · 1:24,000
1956 · Utsalady
USGS Topo · 1:24,000