
Twelvemile Creek and its tributary Long Hollow Creek carve through this high desert ranchland in central Oregon. The landscape is defined by its water management, featuring scattered catchments like Bowyn Reservoir, Ryegrass Reservoir, and the curiously named Porkchop Lake. These ephemeral water sources and the Westlake Waterhole speak to the region's enduring reliance on seasonal runoff to support livestock in a thirsty environment.
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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 · Crescent
USGS Topo · 1:250,000
1955 · Bend
USGS Topo · 1:250,000
1955 · Burns
USGS Topo · 1:250,000
1955 · Canyon City
USGS Topo · 1:250,000
1957 · Crescent
USGS Topo · 1:250,000
1957 · Bend
USGS Topo · 1:250,000
1958 · Crescent
USGS Topo · 1:250,000
1958 · Burns
USGS Topo · 1:250,000