
The Silvies River and its accompanying West Side Ditch define the hydrologic character of this high-elevation region straddling the border of Grant and Harney counties. In the early 21st century, the area remains a landscape of ranching and forestry, anchored by the Silvies Valley and the small settlement at Trout Creek. The map shows a transition from the open valley floors to the timbered slopes of the Malhuer National Forest, which covers much of the western and southern reaches.
40 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.
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
1959 · West Myrtle Butte
USGS Topo · 1:62,500
1961 · Calamity Butte
USGS Topo · 1:62,500
1961 · Logdell
USGS Topo · 1:62,500
1961 · Seneca
USGS Topo · 1:62,500
1978 · John Day
USGS Topo · 1:100,000