
Grande Ronde Valley agricultural lands meet the rising timbered slopes of Craig Mtn in this contemporary topographic record of Union County. The settlement of Union anchors the eastern edge of the map, situated where Catherine Creek and Pyles Creek descend into the valley floor. To the northwest, the distinctive Hot Lake area features its namesake Hot Lake Reservoir, a site with a long history of geothermal prominence. The landscape is defined by its water management and transit corridors, from the winding path of Ladd Canyon to the intricate irrigation network of Grout Ditch and Scott Ditch in the Clover Creek Valley. These features reveal how the natural geography of springs like Kaylor Spring and Thompson Spring has been harnessed to support the valley's ranching and farming operations.
38 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.
1906 · Telocaset
USGS Topo · 1:125,000
1953 · Pendleton
USGS Topo · 1:250,000
1955 · Grangeville
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1959 · Grangeville
USGS Topo · 1:250,000
1963 · La Grande SE
USGS Topo · 1:24,000
1965 · Conley
USGS Topo · 1:24,000
1965 · Glass Hill
USGS Topo · 1:24,000
1965 · Tucker Flat
USGS Topo · 1:24,000
1965 · Union
USGS Topo · 1:24,000