The Rio Grande cuts through the northeast corner of this arid landscape, defining the international boundary between Texas and Mexico. Near its banks, the artificial hydrology of the Dave Gill Canal and the natural drainage of Arroyo Balluco illustrate the region's managed water systems. The vast majority of the terrain is dominated by a complex network of dry washes and desert drainages, reflecting the sparse, rugged character of the northern Chihuahua borderlands. Human activity is largely concentrated along the northern margin, where Ranch Road 192 provides the primary means of transit through this isolated stretch of the Rio Grande valley. This survey from the U.S. Geological Survey captures the topographic detail of the alluvial fans and drainage patterns that characterize this desert environment.
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This is the sole edition of this map. No revisions or reprints were ever made.
1894 · Fort Hancock
USGS Topo · 1:125,000
1943 · Fort Quitman
USGS Topo · 1:62,500
1943 · McNary
USGS Topo · 1:62,500
1954 · Van Horn
USGS Topo · 1:250,000
1958 · Van Horn
USGS Topo · 1:250,000
1959 · Marfa
USGS Topo · 1:250,000
1965 · Marfa
USGS Topo · 1:250,000
1972 · Silver King Canyon
USGS Topo · 1:24,000
1972 · McNary
USGS Topo · 1:24,000
1972 · Esperanza
USGS Topo · 1:24,000