The international border between Canada and the United States of America defines this northernmost edge of the Pacific Northwest. Located within Okanogan Co, Washington, this survey documents the high-country landscape where the American border meets British Columbia. The sheet is primarily defined by its hydrographic network, showing numerous unnamed drainage systems and creeks that feed the trans-border watershed. While the terrain is largely devoid of named settlements or man-made structures in this specific quadrangle, the precise mapping of the Canada / United States of America boundary provides an essential reference for the remote interface between the two nations.
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This is the sole edition of this map. No revisions or reprints were ever made.
1902 · Osoyoos
USGS Topo · 1:125,000
1904 · Osoyoos
USGS Topo · 1:125,000
1954 · Okanogan
USGS Topo · 1:250,000
1957 · Mt. Bonaparte
USGS Topo · 1:62,500
1957 · Oroville
USGS Topo · 1:62,500
1958 · Okanogan
USGS Topo · 1:250,000
1981 · Mount Hull
USGS Topo · 1:24,000
1984 · Oroville
USGS Topo · 1:100,000
1988 · Chesaw
USGS Topo · 1:24,000
1988 · Molson
USGS Topo · 1:24,000