
Malheur National Forest dominates this section of eastern Oregon, where the landscape is defined by the high-elevation drainage systems of the Little Malheur River. This 2020 survey documents a high-desert terrain punctuated by prominent volcanic and erosional features such as Clevenger Butte and Ironside Mtn. The presence of the Lockhart Airport near the confluence of Bridge Cr and the river suggests a reliance on aerial access in this isolated territory. Grazing and water rights are historically significant here, as evidenced by named locations like Black Pasture and Byars Spring. Road networks like Rose Creek Rd and Castle Rock Rd track through the canyons and along the ridges, providing the primary access through the boundary where Grant Co and Malheur Co meet.
26 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.
1908 · Ironside Mountain
USGS Topo · 1:125,000
1955 · Canyon City
USGS Topo · 1:250,000
1959 · Canyon City
USGS Topo · 1:250,000
1970 · Flag Prairie
USGS Topo · 1:62,500
1970 · Castle Rock
USGS Topo · 1:62,500
1972 · Bullrun Rock
USGS Topo · 1:24,000
1972 · Rastus Mtn
USGS Topo · 1:24,000
1972 · Eldorado Pass
USGS Topo · 1:24,000
1978 · John Day
USGS Topo · 1:100,000
1990 · Clevenger Butte
USGS Topo · 1:24,000