2017 Map of Toppenish Mountain

About this map

Yakima Valley transitions into the steep, rising elevation of the Cascade foothills in this detailed topographic study of Yakima County. The landscape is dominated by the massive profile of Toppenish Mtn and the long, high alignment of Toppenish Ridge, which together dictate the flow of local hydrology toward the valley floor. Water management is a central theme of the northern half of the map, where the Unit 2 Canal and Marion Drain Rd reflect the agricultural engineering necessary for this region, while higher elevations maintain natural water features like Olney Lake and Seattle Spring. A network of Bureau of Indian Affairs and local roads, such as Mission Rd, Shaker Church Rd, and Fort Simcoe Rd, provides access across the shifting terrain, connecting the irrigated plains to the timbered ridges and drainages of Toppenish Cr.