
Salish Sea waters dominate this maritime survey, illustrating the deep-water reaches between the Washington mainland and the San Juan Islands. The map specifically details the underwater geography of the Alden Bank, a significant submerged feature within the Strait of Georgia. While primarily a hydrographic study, the northeastern corner captures a small portion of the coastline at Birch Bay, providing a terrestrial anchor to the surrounding marine environment. The sheet also identifies the precise aquatic boundary where Whatcom County and San Juan County meet, reflecting the administrative divisions that extend across these shared northern waters.
7 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1907 · Blaine
USGS Topo · 1:62,500
1943 · Orcas Island
USGS Topo · 1:62,500
1943 · Anacortes
USGS Topo · 1:62,500
1951 · Anacortes
USGS Topo · 1:62,500
1952 · Birch Point
USGS Topo · 1:24,000
1952 · Lummi Bay
USGS Topo · 1:24,000
1952 · Blaine
USGS Topo · 1:24,000
1952 · Blaine
USGS Topo · 1:62,500
1957 · Orcas Island
USGS Topo · 1:62,500
1957 · Victoria
USGS Topo · 1:250,000