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2023 Map of Lost Horse Plateau

Name: 2023 Topographic Map of Lost Horse Plateau
Creator: U.S. Geological Survey
Published: 2023
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2023

About this map

Lost Horse Plateau and the neighboring Lincoln Plateau dominate this high-elevation landscape in Yakima County, defined by a complex network of canyons and drainage systems. The hydrology is centered on Toppenish Creek and its major tributaries, including the North Fork Toppenish Creek, Wahtum Creek, and Branch Creek. These waterways carve deep into the plateau terrain, illustrating the natural erosional patterns of the region.

Transportation throughout this area is facilitated by Bureau of Indian Affairs routes and named local roads such as Fort Simcoe Rd, Old Maid Piscoe Rd, and Olney Corral Rd. The map also captures smaller water features like Clock Creek and O'Connor Creek, which provide fine-grained detail for those studying the local topography or specific land management boundaries between T9N and T10N. This 2023 survey serves as a contemporary record of the land's physical layout and its essential access routes.