
The southern foothills of the Chocolate Mountains define the arid landscape of this Imperial County desert region. Low-lying drainages including Arroyo Seco and Martinez Gulch cut through the terrain, illustrating the natural water runoff patterns that shape the local topography. This 2021 topographic study reflects the modern geography of this sparsely populated area, where Skyline Dr provides one of the few navigational markers across the high desert. The map captures the intersection of several township and range boundaries, specifically where T9S and T10S meet across R16E, R17E, and R18E, providing essential data for land ownership and boundary research in a region dominated by its stark physical features.
12 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1940 · Iris
USGS Topo · 1:62,500
1940 · Iris Pass
USGS Topo · 1:62,500
1945 · Iris Pass
USGS Topo · 1:62,500
1945 · Iris
USGS Topo · 1:62,500
1953 · Chuckwalla Spring
USGS Topo · 1:62,500
1953 · Acolita
USGS Topo · 1:62,500
1954 · Salton Sea
USGS Topo · 1:250,000
1955 · Tortuga
USGS Topo · 1:24,000
1955 · Salton Sea
USGS Topo · 1:250,000
1959 · Salton Sea
USGS Topo · 1:250,000