
Grindstone Cr and its tributaries define the drainage patterns of this high-elevation landscape in eastern Oregon. The terrain is marked by distinctive flat-topped mesas and volcanic features, including Ryegrass Table, Shaw Table, and Forbes Butte. Water management is central to the land's utility, as evidenced by a network of small impoundments such as Layton Reservoir Number 2, Gollum Reservoir, and Brennan Reservoir. These features, along with scattered water sources like Davin Spring and Coyote Spring, suggest a landscape historically tied to livestock grazing. The transition between the high plateaus and lower drainage basins is clearly visible at Axtell Gap and along the prominent Yreka Rim, providing a clear view of the topographic shifts that dictate travel and access through the region.
31 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.
1932 · Dayville
USGS Topo · 1:125,000
1936 · Dayville
USGS Topo · 1:125,000
1955 · Burns
USGS Topo · 1:250,000
1955 · Canyon City
USGS Topo · 1:250,000
1958 · Burns
USGS Topo · 1:250,000
1959 · Burns
USGS Topo · 1:250,000
1959 · Canyon City
USGS Topo · 1:250,000
1961 · Delintment Lake
USGS Topo · 1:62,500
1981 · Powell Mtn
USGS Topo · 1:24,000
1981 · Suplee
USGS Topo · 1:24,000