2020 Map of Sundale NW

About this map

Lake Umatilla dominates the central corridor of this landscape, marking the interstate boundary between Klickitat County, Washington, and Gilliam County, Oregon. The topography is defined by the high plateaus and deep drainage incisions typical of the Columbia River basin, with named corridors such as Swanson Canyon and Phillippi Canyon cutting through the terrain toward the water. On the Washington side, the small settlement of Bates sits near the shoreline, while the Oregon side features the broad expanse of Blalock Flat. Local transport and access are dictated by the steep relief, shown through routes like Goodnoe Station Rd and Old Hwy 8. The confluence of the John Day River in the southwest corner highlights the complex hydrologic network that has shaped this region's development and natural borders.