
Lone Rock Creek carves a deep path through the high plateau of Gilliam County in this 2014 survey. The landscape is defined by its dramatic vertical relief, where several major drainage systems converge, including the Needle Fork and the Lub Fork. These waterways have sculpted a series of prominent features such as McPherson Canyon and Billy Canyon, illustrating the erosive power of these seasonal forks over millennia.
22 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.
1916 · Condon
USGS Topo · 1:125,000
1953 · Pendleton
USGS Topo · 1:250,000
1953 · The Dalles
USGS Topo · 1:250,000
1956 · The Dalles
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1957 · The Dalles
USGS Topo · 1:250,000
1968 · Gooseberry
USGS Topo · 1:24,000
1968 · Eightmile
USGS Topo · 1:24,000
1969 · Lefevre Prairie
USGS Topo · 1:24,000
1969 · Buttermilk Canyon
USGS Topo · 1:24,000