The Rio Grande serves as the primary geographic and political centerpiece of this 2010 borderland survey, tracing the international boundary between the United States of America and Estados Unidos Mexicanos. This section of the river is characterized by its transition into the Amistad Reservoir, where the impounded waters fill the winding canyon. The map illustrates the sparsely populated terrain along the river's edge, highlighting how the waterway continues to dictate the orientation of regional borders and water management even decades after the reservoir's creation.
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This is the sole edition of this map. No revisions or reprints were ever made.
1943 · Langtry
USGS Topo · 1:62,500
1943 · Shumla
USGS Topo · 1:62,500
1944 · Mouth Of Pecos
USGS Topo · 1:62,500
1958 · Del Rio
USGS Topo · 1:250,000
1964 · Del Rio
USGS Topo · 1:250,000
1972 · Zuberbueler Bend NW
USGS Topo · 1:24,000
1972 · Seminole Canyon
USGS Topo · 1:24,000
1972 · Zuberbueler Bend
USGS Topo · 1:24,000
1973 · Langtry
USGS Topo · 1:24,000
1973 · Shumla
USGS Topo · 1:24,000