
Ochoco National Forest defines the northern reaches of this high-desert landscape in Harney County, where the terrain transitions from the uplifted Chapin Table and Nicoll Ridge down into the expansive Silver Creek Valley. The central drainage of Silver Creek is fed by numerous seasonal waterways, including Dairy Creek, Wickiup Creek, and Sawmill Creek. Evidence of land use and ranching history is marked by established tracks like Mayo Ranch Ln and Mc Canlies Rd, which navigate the flats and ridges. To the south, the landscape levels into Ryegrass Flat and Mud Flat, providing a contrast to the northern forest boundary. Notable water sources such as Camp Currey Spring and the North Fork Chickahominy Creek are vital features in this arid environment, illustrating the intersection of natural hydrology and historic transit routes in the Oregon backcountry.
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This is the sole edition of this map. No revisions or reprints were ever made.
1955 · Burns
USGS Topo · 1:250,000
1958 · Burns
USGS Topo · 1:250,000
1959 · Burns
USGS Topo · 1:250,000
1961 · Delintment Lake
USGS Topo · 1:62,500
1981 · Mackey Butte
USGS Topo · 1:24,000
1981 · Potato Hills
USGS Topo · 1:24,000
1981 · Bulger Ridge
USGS Topo · 1:24,000
1981 · Camp Currey Spring
USGS Topo · 1:24,000
1981 · Suntex
USGS Topo · 1:24,000
1981 · Riley
USGS Topo · 1:24,000