
Summerville sits at the edge of the productive Grande Ronde Valley, where the flat agricultural basin meets the rising slopes of the Blue Mountains. This modern survey illustrates the complex water management system essential to the region, featuring irrigation infrastructure like the Ordell Ditch and Dobbin Ditch, alongside numerous upland water sources such as Conklin Spring and Hale Springs. The landscape is defined by the sharp transition from the valley floor to the timbered heights of the Whitman National Forest and Umatilla National Forest. Historically significant terrain features, including Indian Trail Canyon and the evocatively named Fiddlers Hell, dominate the western half of the map. Traces of local land use are evident in the network of rural lanes like Happy Walrus Rd and the Mt Emily Snowmobile trail, reflecting both the agricultural and recreational character of contemporary Union County.
81 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
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 · Hilgard
USGS Topo · 1:24,000
1963 · Summerville
USGS Topo · 1:24,000
1964 · Thimbleberry Mtn
USGS Topo · 1:24,000