
Summit Ridge and its network of agricultural and market roads define the plateau geography of Wasco County in this 2011 survey. The landscape is deeply incised by drainages that feed the Deschutes River, which appears in the southeastern corner near Ferry Canyon. This area is characterized by high ridges such as Hastings Ridge Rd and seasonal watercourses like Davis Creek. The naming conventions of the local infrastructure, including Wrentham Market Rd and Summit Ridge Mkt Rd, suggest a historic connectivity between high-elevation farmsteads and regional market centers. Further topographical variety is found in the northern breaks at Windmill Canyon and the eastern descent into Craft Canyon, illustrating the transition from open ridge tops to the steep river corridors of the Oregon interior.
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This is the sole edition of this map. No revisions or reprints were ever made.
1930 · Dufur
USGS Topo · 1:125,000
1934 · Dufur
USGS Topo · 1:125,000
1934 · The Dalles
USGS Topo · 1:125,000
1953 · The Dalles
USGS Topo · 1:250,000
1956 · The Dalles
USGS Topo · 1:250,000
1957 · The Dalles
USGS Topo · 1:250,000
1957 · The Dalles
USGS Topo · 1:62,500
1957 · Wishram
USGS Topo · 1:62,500
1962 · Sherars Bridge
USGS Topo · 1:24,000
1962 · Erskine
USGS Topo · 1:24,000