
Wasco serves as the primary hub in this Sherman County landscape, where the town’s grid is defined by streets such as Armsworthy St and Fulton St. The surrounding geography is deeply incised by complex drainage patterns, including China Hollow, Spanish Hollow, and Grass Valley Canyon. These natural features dictated the early transportation routes, now reflected in the winding paths of the Old Sherman Hwy and the Old Wasco-Heppner Hwy.
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This is the sole edition of this map. No revisions or reprints were ever made.