The brush country of South Texas meets a complex network of ephemeral waterways in this 2016 survey of the area where Zapata, Jim Hogg, and Starr Counties converge. This arid landscape is defined by the drainage patterns of San Juan Cr and Chico Cr, which carve through the terrain toward the Rio Grande basin. The presence of P Flores Lake provides a rare localized water source in a region otherwise dominated by seasonal creek beds like Las Escobas Cr and Remadura de Charco Largo Cr. Human activity is primarily represented by a grid of ranch roads and specialized corridors such as Multi Shot Rd and El Tecolote Ranch Rd, reflecting the contemporary cattle ranching and energy infrastructure of the Rio Grande Plains.
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This is the sole edition of this map. No revisions or reprints were ever made.
1938 · Falcon
USGS Topo · 1:62,500
1938 · El Sauz
USGS Topo · 1:62,500
1938 · Cuevitas
USGS Topo · 1:62,500
1949 · Mc Allen
USGS Topo · 1:250,000
1954 · McAllen
USGS Topo · 1:250,000
1956 · Arroyo Clareno
USGS Topo · 1:62,500
1957 · Mc Allen
USGS Topo · 1:250,000
1962 · McAllen
USGS Topo · 1:250,000
1965 · Lopeno
USGS Topo · 1:24,000
1972 · Cuevitas
USGS Topo · 1:24,000