
The agricultural valleys of Union County are anchored by the Grande Ronde River, which carves a winding path past the foothills of Mount Harris. This 1994 edition reveals a landscape defined by an intricate network of rural roads such as Sandridge Road and Imbler Road, serving the small farming communities of Imbler, Summerville, and Alicel. The river's original oxbows are visible alongside the engineered State Ditch, a testament to local efforts to manage the floodplain for cultivation. Family-named landmarks and infrastructure like Speckhart Lane and various Storage Bins underscore the area's deep-rooted agrarian economy. To the northwest, the settlement of Summerville is located near its namesake Summerville Cem and a historic Mill site on Willow Creek. The steep eastern ascent toward the Lookout Radio Tower provides a sharp contrast to the flat, irrigated valley floor where the Grande Ronde meanders.
35 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
1963 · Sanderson Spring
USGS Topo · 1:24,000
1963 · Summerville
USGS Topo · 1:24,000
1964 · Cricket Flat
USGS Topo · 1:24,000
1964 · Elgin
USGS Topo · 1:24,000