Tampico serves as the focal point for this 2013 survey of Yakima County, where the settlement sits at the confluence of the north and south forks of the Ahtanum Cr. The landscape is defined by the high, dry elevations of Cowiche Mtn to the north and the prominent Ahtanum Ridge to the south. This geography creates the sheltered Ahtanum Valley, a region where water management is clearly the lifeblood of the local economy.
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This is the sole edition of this map. No revisions or reprints were ever made.
1899 · Ellensburg
USGS Topo · 1:125,000
1901 · Ellensburg
USGS Topo · 1:125,000
1937 · White Swan
USGS Topo · 1:125,000
1950 · Yakima
USGS Topo · 1:250,000
1957 · Yesmowit Canyon
USGS Topo · 1:24,000
1958 · Fort Simcoe
USGS Topo · 1:62,500
1958 · Wiley City
USGS Topo · 1:24,000
1958 · White Swan
USGS Topo · 1:24,000
1958 · Medicine Valley
USGS Topo · 1:24,000
1958 · Naches
USGS Topo · 1:24,000