The international border between the United States of America and Canada defines this 2017 survey area along the northern edge of the Washington-British Columbia line. This remote segment of the boundary is characterized by the natural drainage patterns of high-elevation terrain, where numerous unnamed streams and mountain tributaries flow across the landscape. The topographic data provided by the U.S. Geological Survey and the U.S. Department of the Interior emphasizes the hydrological network and elevation contours that cross this geopolitical boundary. While largely devoid of named settlements or major infrastructure, the map serves as a primary record of the physical geography and the precise line demarcating the two nations in this high-country region of the Pacific Northwest.
1 named feature 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.
1936 · Marcus
USGS Topo · 1:96,000
1942 · Marcus
USGS Topo · 1:125,000
1948 · Orient
USGS Topo · 1:62,500
1948 · Togo Mountain
USGS Topo · 1:62,500
1951 · Togo Mountain
USGS Topo · 1:62,500
1951 · Orient
USGS Topo · 1:62,500
1954 · Okanogan
USGS Topo · 1:250,000
1958 · Okanogan
USGS Topo · 1:250,000
1969 · Laurier
USGS Topo · 1:24,000
1983 · Boundary Mtn
USGS Topo · 1:24,000