
Grass Valley serves as the primary hub in this Sherman County landscape, situated where the Union Pacific railroad corridor meets the rolling high plateau. The town site, complete with its local Park and essential Water Tank, anchors a region defined by a complex network of drainage systems. The terrain is deeply incised by prominent features like Grass Valley canyon and Cottonwood Canyon, which reveal the erosive power of seasonal water in this arid environment.
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.
1953 · The Dalles
USGS Topo · 1:250,000
1956 · The Dalles
USGS Topo · 1:250,000
1957 · The Dalles
USGS Topo · 1:250,000
1962 · Erskine
USGS Topo · 1:24,000
1962 · Summit Ridge
USGS Topo · 1:24,000
1962 · Sinamox
USGS Topo · 1:24,000
1970 · Kent
USGS Topo · 1:24,000
1970 · Rosebush
USGS Topo · 1:24,000
1971 · Moro
USGS Topo · 1:24,000
1971 · Dead Dog Canyon
USGS Topo · 1:24,000