
The town of Mount Vernon sits at the confluence of Beech Cr and the John Day River, serving as a central hub for this portion of Grant County. The landscape is defined by its water management and agricultural engineering, evidenced by a network of irrigation works including Panama Ditch, Laycock Long Ditch, and Enterprise Ditch. These systems snake through the valley floor near Hines Log Pond, supporting the local economy in the shadow of the northern Malheur National Forest boundary.
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This is the sole edition of this map. No revisions or reprints were ever made.
1940 · Mount Vernon
USGS Topo · 1:62,500
1940 · John Day
USGS Topo · 1:62,500
1943 · John Day
USGS Topo · 1:62,500
1943 · Mount Vernon
USGS Topo · 1:62,500
1949 · Long Creek
USGS Topo · 1:62,500
1949 · Susanville
USGS Topo · 1:62,500
1951 · Susanville
USGS Topo · 1:62,500
1951 · Long Creek
USGS Topo · 1:62,500
1955 · Canyon City
USGS Topo · 1:250,000
1959 · Canyon City
USGS Topo · 1:250,000