2023 Map of Kisumxi Mountain

About this map

The city of Toppenish sits at the northern edge of this landscape, where the residential grid gives way to the irrigation networks of the Yakima Valley. This map illustrates a complex hydraulic environment defined by man-made channels like Toppenish Drain, Marion Drain, and Lateral 4, which sustain the surrounding agriculture. South of the city, the terrain transitions into the protected wetlands of the Toppenish National Wildlife Refuge, a labyrinth of marshes and watercourses including Wanity Slough and Snake Creek.