The Sierra Pinta mountain range dominates this portion of Yuma County, providing a stark topographical spine between the Tule Desert to the west and the Mohawk Valley to the northeast. This 2014 survey captures a landscape defined by seasonal water catchments and severe elevation changes, where natural features like Heart Tank and Eagle Tank serve as critical hydrological markers in an otherwise arid environment. The map details the complex drainage systems of the range, including Hummingbird Canyon, Chia Canyon, and Eagle Canyon, which carve through the southern peaks. Navigational points such as Sunday Pass and the distinctive landform of Isla Pinta further illustrate the geography of this borderlands region, which remains largely shaped by its natural barriers and the historical township and range system.
14 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1953 · Ajo
USGS Topo · 1:250,000
1957 · Ajo
USGS Topo · 1:250,000
1958 · Ajo
USGS Topo · 1:250,000
1962 · Ajo
USGS Topo · 1:250,000
1963 · Ajo
USGS Topo · 1:250,000
1965 · O'Neill Hills
USGS Topo · 1:62,500
1965 · Granite Mountains
USGS Topo · 1:62,500
1965 · Isla Pinta
USGS Topo · 1:62,500
1965 · Sierra Arida
USGS Topo · 1:62,500
1967 · Ajo
USGS Topo · 1:250,000