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2014 Map of Lost Horse Plateau

Name: 2014 Topographic Map of Lost Horse Plateau
Creator: U.S. Geological Survey
Published: 2014
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2014

About this map

Lost Horse Plateau and Lincoln Plateau dominate this landscape within the Yakama Indian Reservation, revealing a network of Bureau of Indian Affairs (BIA) routes and ancient drainage patterns. The topography is defined by the extensive reach of Toppenish Cr and its various tributaries, including the N Fork Toppenish Cr and Clock Cr. These waterways carve deep into the plateau surface, creating distinct features like Old Maid Canyon in the northwest.

Evidence of local land use is centered at Olney Corral, situated near Wahtum Cr. The map documents a sophisticated system of rural roads such as Fort Simcoe Rd, BIA 187 Rd, and BIA 211 Rd that provide access across the high ground between Agency Cr and the southern canyons. This 2014 survey serves as a modern record of tribal lands, highlighting the names and routes that define this portion of Yakima County.