
The Ochoco National Forest defines this high-elevation landscape in Grant County, where a complex network of forest development roads provides access to isolated mountain ridges and water management sites. The terrain is characterized by prominent elevations such as Suplee Butte, Sugarloaf Mtn, and Spur Butte, interspersed with level clearings like Murray Flat and Cinnabar Flat. Water management is central to the area's utility, evidenced by a high density of small reservoirs and springs, including Big Mowich Reservoir, Hobnail Reservoir, and Wildhorse Reservoir. The S Fork John Day River flows through the eastern portion of the quadrangle, joined by tributaries like Magic Lantern Cr and Davis Cr. This detailed 2014 survey documents the infrastructure of the public land, from the Holding Pasture to various cattle-related water sources like Blue Pot Spring and Hobble Spring, reflecting the region's continued use for seasonal grazing and forest management.
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This is the sole edition of this map. No revisions or reprints were ever made.
1932 · Dayville
USGS Topo · 1:125,000
1936 · Dayville
USGS Topo · 1:125,000
1940 · Aldrich Mtn.
USGS Topo · 1:62,500
1943 · Aldrich Mtn.
USGS Topo · 1:62,500
1955 · Canyon City
USGS Topo · 1:250,000
1959 · Canyon City
USGS Topo · 1:250,000
1961 · Izee
USGS Topo · 1:62,500
1972 · Wolf Mountain
USGS Topo · 1:24,000
1972 · Aldrich Gulch
USGS Topo · 1:24,000
1972 · Aldrich Mountain South
USGS Topo · 1:24,000