
The Rio Grande snakes through the extreme northern edge of this landscape, defining the international boundary between the Usa and Mexico. This section of the borderlands is characterized by a network of drainage channels and ephemeral water bodies that feed toward the river valley. The terrain is marked by subtle shifts in elevation, with a collection of small basins and ridges that dominate the topography of Webb County. A sparse road network suggests a ranching or rural land use pattern typical of this semi-arid region of South Texas during the early 21st century.
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This is the sole edition of this map. No revisions or reprints were ever made.
1933 · Becerra Creek
USGS Topo · 1:62,500
1956 · Islitas
USGS Topo · 1:62,500
1956 · Laredo East
USGS Topo · 1:62,500
1956 · Laredo
USGS Topo · 1:250,000
1965 · Laredo West
USGS Topo · 1:24,000
1965 · Laredo East
USGS Topo · 1:24,000
1979 · Isla Mesteno
USGS Topo · 1:24,000
1979 · Laredo South
USGS Topo · 1:24,000
1979 · O'Keefe Lake
USGS Topo · 1:24,000
1985 · Laredo
USGS Topo · 1:100,000