The North Powder townsite sits at the intersection of high-desert water management and historic transit corridors along the Union County and Baker County line. This area is defined by an intricate network of irrigation features such as the Sunnyslope Ditch, Moody Ditch, and Treavillion-Koester ditch, which draw from the Powder River to support the agriculture of the North Powder Valley. The landscape transitions from the open flats of the Clover Creek Valley toward the foothills, where natural water sources like Stephens Spring and Sixteen Mile Spring are found. Modern transportation following the path of the historic Oregon Trail Rd dominates the central corridor, while local names like Miles Ranch Rd and Coughanour Ln indicate the enduring presence of family holdings in this rural Oregon setting.
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1901 · Baker City
USGS Topo · 1:125,000
1901 · Sumpter
USGS Topo · 1:125,000
1906 · Telocaset
USGS Topo · 1:125,000
1953 · Pendleton
USGS Topo · 1:250,000
1955 · Baker
USGS Topo · 1:250,000
1955 · Grangeville
USGS Topo · 1:250,000
1955 · Canyon City
USGS Topo · 1:250,000
1956 · Pendleton
USGS Topo · 1:250,000
1959 · Baker
USGS Topo · 1:250,000
1959 · Grangeville
USGS Topo · 1:250,000