Toppenish Mtn and the prominent Toppenish Ridge dominate the southern half of this landscape, rising sharply above the fertile plains of the Yakima Valley to the north. This high-altitude terrain is defined by deep drainages and remote water sources including Seattle Spring and the headwaters of Seattle Cr. In the lower elevations, the transition to an engineered agricultural landscape is evident through the path of the Unit 2 Canal and a grid of secondary roads such as Shaker Church Rd and Mission Rd. The contrast between the natural flow of Toppenish Cr and the structured network of irrigation and transport highlights the dual nature of this Yakima County region, where high-country wilderness meets the intensive land use of the valley floor. Researchers will find interest in the intersection of tribal roads and established routes like the Mt Adams Hwy that navigate the varied topography.
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This is the sole edition of this map. No revisions or reprints were ever made.
1937 · White Swan
USGS Topo · 1:125,000
1950 · Yakima
USGS Topo · 1:250,000
1958 · Toppenish Mtn.
USGS Topo · 1:24,000
1958 · Harrah
USGS Topo · 1:24,000
1958 · Fort Simcoe
USGS Topo · 1:24,000
1958 · Fort Simcoe
USGS Topo · 1:62,500
1958 · White Swan
USGS Topo · 1:24,000
1958 · Medicine Valley
USGS Topo · 1:24,000
1958 · Harrah SE
USGS Topo · 1:24,000
1958 · Yakima
USGS Topo · 1:250,000