
The Rio Grande serves as the defining geographic and political feature of this landscape, carving through the high desert terrain of Presidio County. This 2022 survey captures the international boundary where the United States of America meets Estados Unidos Mexicanos at a remote bend in the river. The lack of infrastructure or modern development in this specific quadrant highlights the isolation of the Trans-Pecos frontier. Most of the map is characterized by a dense network of ephemeral drainage patterns and arroyos that feed toward the river valley, illustrating the complex hydrography of the Big Bend region. This map is a stark record of a borderland defined primarily by its natural contours and the ancient path of the river rather than human settlement.
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This is the sole edition of this map. No revisions or reprints were ever made.
1896 · Ruidosa
USGS Topo · 1:125,000
1959 · Presidio
USGS Topo · 1:250,000
1965 · Presidio
USGS Topo · 1:250,000
1966 · Adobes
USGS Topo · 1:24,000
1978 · Sierra Parda
USGS Topo · 1:24,000
1979 · Indio
USGS Topo · 1:24,000
1980 · Las Conchas
USGS Topo · 1:24,000
1985 · Presidio
USGS Topo · 1:100,000
1993 · Presidio
USGS Topo · 1:100,000
2010 · Sierra Parda
USGS Topo · 1:24,000