
The confluence of the Okanogan River and the Columbia River serves as the focal point for this survey, marking the jurisdictional boundary between Douglas Co and Okanogan Co. The terrain is characterized by broad alluvial features like Cassimer Bar, Buenna Bar, and Washburn Island, which sit just below the town of Brewster. Further south, the landscape rises toward the prominent heights of Rocky Butte and Devils Head, overlooking the more concentrated development of Bridgeport. This area reflects a long history of river-based commerce and agriculture, as evidenced by the extensive road network serving the Brewster Flat and Snider Flat areas. Genealogists will find the Bridgeport Cem and established settlements such as Downing useful for tracing local family history in this river valley corridor, while aviation history is represented by the location of Anderson Field.
67 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.
1905 · Okanogan
USGS Topo · 1:125,000
1953 · Ritzville
USGS Topo · 1:250,000
1954 · Okanogan
USGS Topo · 1:250,000
1957 · Bridgeport
USGS Topo · 1:62,500
1957 · Brewster
USGS Topo · 1:62,500
1958 · Okanogan
USGS Topo · 1:250,000
1959 · Ritzville
USGS Topo · 1:250,000
1965 · Ritzville
USGS Topo · 1:250,000
1968 · Chief Joseph Dam
USGS Topo · 1:24,000
1968 · Wells Dam
USGS Topo · 1:24,000