The Rio Grande cuts through this arid borderland south of the Texas-Mexico line, serving as the dominant geographic feature in an otherwise sparse landscape. This 2013 survey documents a complex network of ephemeral drainage channels that feed into the river, illustrating the intricate hydrology of the high desert. The terrain is defined by a dense web of arroyos and washes, reflecting the erosive power of seasonal rains in a region with minimal human development or infrastructure. The lack of established roads or settlements on this sheet highlights the isolated nature of this stretch along the international boundary, where the natural course of the Rio Grande remains the primary landmark.
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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
1919 · Maravillas Canyon
USGS Topo · 1:62,500
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 · Stillwell Crossing
USGS Topo · 1:24,000
1983 · Las Vegas De Los Ladrones SW
USGS Topo · 1:24,000
1983 · Bourland Canyon
USGS Topo · 1:24,000
1983 · Las Vegas De Los Ladrones
USGS Topo · 1:24,000
1983 · San Rosendo
USGS Topo · 1:24,000