
The Irrigon townsite occupies the southern banks of the Columbia River in Morrow County, where the landscape transitions from the broad river valley into the northern plateau. This 2011 survey captures the community's layout, anchored by the Irrigon Post Office and residential streets like NE Main Ave and E Knapp St. The local history is further documented through the Desert Lawn Memorial Cemetery, while the vital importance of water management in this arid region is visible in the path of the West Extension Irrigation Canal as it cuts across the southern portion of the quadrangle.
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This is the sole edition of this map. No revisions or reprints were ever made.
1906 · Blalock Island
USGS Topo · 1:125,000
1908 · Blalock Island
USGS Topo · 1:125,000
1908 · Umatilla
USGS Topo · 1:125,000
1915 · Prosser
USGS Topo · 1:125,000
1917 · Pasco
USGS Topo · 1:125,000
1917 · Prosser
USGS Topo · 1:125,000
1953 · Pendleton
USGS Topo · 1:250,000
1953 · Walla Walla
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1958 · Walla Walla
USGS Topo · 1:250,000