The Rio Grande serves as the international boundary between Texas and Mexico in this 2016 survey, winding through a landscape shaped by seasonal watercourses and upland tanks. This specific reach of the border is defined by the sharp meanders of the river and the confluence of San Lorenzo Creek, which drains the arid terrain of Webb County. Historical movement through this region is traced via Eagle Pass Rd, a route that skirts the higher elevations to the east. Isolated water sources like Bull Hollow Tank are vital markers in this semi-arid environment, serving as focal points for local navigation and land management where permanent surface water is otherwise scarce beyond the riverbank.
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This is the sole edition of this map. No revisions or reprints were ever made.
1923 · Palafox
USGS Topo · 1:62,500
1929 · Cotulla
USGS Topo · 1:125,000
1940 · San Loranzo Creek
USGS Topo · 1:62,500
1940 · Chupadera
USGS Topo · 1:62,500
1953 · Crystal City
USGS Topo · 1:250,000
1955 · Crystal City
USGS Topo · 1:250,000
1956 · Laredo
USGS Topo · 1:250,000
1958 · Eagle Pass
USGS Topo · 1:250,000
1961 · Crystal City
USGS Topo · 1:250,000
1965 · Eagle Pass
USGS Topo · 1:250,000