The United States and Mexico border is defined by the winding course of the Rio Grande through Brewster County in this 2019 survey. This stretch of the river is protected as the Rio Grande Wild and Scenic River, where the international boundary follows the deepest channel of the water through a series of sharp, carved bends. The landscape north of the river is marked by sharp elevation changes and dry drainage features including Barrel Canyon and Panther Gulch, which cut through the high limestone plateaus. Sparse development characterizes this reach of West Texas, with the terrain remaining largely dominated by natural contours rather than human infrastructure, offering a clear record of the river's geomorphology at the end of the second decade of the 2000s.
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This is the sole edition of this map. No revisions or reprints were ever made.
1918 · Reagan Canyon
USGS Topo · 1:62,500
1918 · Bullis Gap
USGS Topo · 1:62,500
1918 · Indian Wells
USGS Topo · 1:62,500
1959 · Emory Peak
USGS Topo · 1:250,000
1965 · Emory Peak
USGS Topo · 1:250,000
1983 · Panther Gulch East
USGS Topo · 1:24,000
1983 · Bullis Gap
USGS Topo · 1:24,000
1983 · Panther Gulch West
USGS Topo · 1:24,000
1983 · Candilla Canyon West
USGS Topo · 1:24,000
1983 · San Rosendo
USGS Topo · 1:24,000