The international border with Canada forms the southern boundary of this high-latitude survey, marking the transition from Okanogan County, Washington, into the southern interior of British Columbia. The landscape is defined by its drainage patterns, where numerous small creeks and intermittent streams carve through the terrain. While the sheet is sparse in terms of modern infrastructure or named settlements, it provides a precise look at the hydrography of this border region. The mapping focuses on the headwaters and drainages that flow across the frontier, illustrating the natural connectivity of the landscape despite the geopolitical line of Canada at the map's base.
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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