
The Owyhee Mountains dominate the eastern edge of this high-desert landscape on the border of Malheur County, Oregon, and Owyhee County, Idaho. This 2017 survey details a region defined by complex drainage basins and water management for livestock, with numerous catchments like Hot Rock Reservoir, Mitzi Reservoir, and Cunningham Reservoir distributed across the dry terrain. The topography is anchored by the prominent Pole Creek Top and the geological formation of Negro Rock to the southwest.
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This is the sole edition of this map. No revisions or reprints were ever made.
1892 · Silver City
USGS Topo · 1:125,000
1894 · Silver City
USGS Topo · 1:125,000
1898 · Nampa
USGS Topo · 1:125,000
1898 · Silver City
USGS Topo · 1:125,000
1906 · Mitchell Butte
USGS Topo · 1:125,000
1955 · Boise
USGS Topo · 1:250,000
1957 · Sands Basin
USGS Topo · 1:62,500
1958 · Boise
USGS Topo · 1:250,000
1958 · Homedale
USGS Topo · 1:24,000
1962 · Boise
USGS Topo · 1:250,000