Kohatk and Sif Vaya stand as the primary human settlements in this arid expanse of the Sonoran landscape. The area is defined by a sparse network of desert travel routes, most notably Indian Rte 42 and Indian Rte 22, which provide the essential connection between these remote outposts. The natural geography is dominated by the broad Kohatk Valley, framed by the eastern reaches of the Vekol Mountains. Seasonal water systems like Kohatk Wash and Bitter Well Wash carve ephemeral paths across the valley floor, indicating the drainage patterns that have historically influenced movement and habitation in this environment. This 2011 survey illustrates the spatial relationship between traditional Tohono O’odham lands and the natural desert topography, showing a landscape where modern infrastructure remains secondary to the enduring terrain.
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This is the sole edition of this map. No revisions or reprints were ever made.
1934 · Silver Bell
USGS Topo · 1:125,000
1941 · Vekol Mountains
USGS Topo · 1:62,500
1942 · Silver Reef Mountains
USGS Topo · 1:62,500
1942 · Vekol Mountains
USGS Topo · 1:62,500
1953 · Ajo
USGS Topo · 1:250,000
1956 · Tucson
USGS Topo · 1:250,000
1957 · Ajo
USGS Topo · 1:250,000
1958 · Ajo
USGS Topo · 1:250,000
1958 · Tucson
USGS Topo · 1:250,000
1959 · Tucson
USGS Topo · 1:250,000