The Horse Heaven Hills dominate this portion of the Columbia Basin, defined by deep drainage systems such as Nine Canyon and Switzler Canyon. The terrain reflects a landscape of high ridges and agricultural valleys, where the Division Four Canal provides critical water management for the arid surroundings. This 2017 survey shows a network of rural roads that follow the natural topography, including S Nine Canyon Rd and S Upper Blair Rd, which connect the high plateaus to the lower reaches. Distinctive landmarks like The Butte rise above the undulating hills, providing clear navigational points in a region largely dedicated to open space and farming. The map effectively documents the transition from the high ridges of the Horse Heaven Hills down toward the irrigation networks that sustain the area.
23 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.
1908 · Umatilla
USGS Topo · 1:125,000
1915 · Wallulah
USGS Topo · 1:96,000
1917 · Pasco
USGS Topo · 1:125,000
1918 · Wallula
USGS Topo · 1:125,000
1935 · Pendleton
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
1962 · Hat Rock
USGS Topo · 1:24,000