The international border between United States of America and Mexico bisects this 2018 survey, running diagonally through a landscape of ephemeral drainage channels. To the north, the terrain is characterized by the expansive flats of The Great Plain, situated within the Public Land Survey System designations of t19s r1w and t19s r1e. The map illustrates a strictly rural desert environment in Pima County, where the topography is defined by subtle elevation changes and numerous dry washes that flow southward toward the border. This specific quadrangle provides a clear look at the jurisdictional boundary line as it intersects with the southern reaches of the Arizona desert, offering a precise geographic record of the region's surveying markers and land divisions just north of Sonora.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Sonoyta
USGS Topo · 1:250,000
1963 · Kom Vo
USGS Topo · 1:62,500
1963 · Gu Oidak
USGS Topo · 1:62,500
1963 · La Lesna Mts.
USGS Topo · 1:62,500
1963 · Lukeville
USGS Topo · 1:250,000
1988 · South of Bailey Peak
USGS Topo · 1:24,000
1988 · Kots Kug Ranch
USGS Topo · 1:24,000
1988 · South of Papago Farms
USGS Topo · 1:24,000
1988 · Bailey Peak
USGS Topo · 1:24,000
1988 · Papago Farms
USGS Topo · 1:24,000