
Big Bend National Park defines this 2022 survey of the Texas-Mexico borderlands in Brewster County. The landscape is dominated by the steep rises of the Sierra del Carmen, a rugged range that borders the winding path of the Rio Grande Wild and Scenic River. This map illustrates the international boundary between the Usa and Mexico in a reach where the river flows through protected wilderness. The absence of roads and settlements emphasizes the primitive state of this Chihuahuan Desert terrain, where the river's course is the primary corridor through the steep canyons. This modern topographical record allows for precise study of the river's current path compared to historical border demarcations.
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This is the sole edition of this map. No revisions or reprints were ever made.
1930 · Stillwell Creek
USGS Topo · 1:62,500
1959 · Emory Peak
USGS Topo · 1:250,000
1965 · Emory Peak
USGS Topo · 1:250,000
1971 · Ernst Valley
USGS Topo · 1:24,000
1971 · Boquillas
USGS Topo · 1:24,000
1984 · Boquillas
USGS Topo · 1:100,000
2010 · Ernst Valley
USGS Topo · 1:24,000
2010 · Rio Grande Village
USGS Topo · 1:24,000
2011 · Stillwell Crossing OE S
USGS Topo · 1:24,000
2011 · Rio Grande Village OE E
USGS Topo · 1:24,000