The Rio Grande snakes through the extreme northeast corner of this West Brownsville OE W quadrangle, marking the international boundary between the United States and Mexico. Beyond this single winding watercourse, the map serves primarily as a digital grid study, representing a largely undeveloped border landscape at the start of the 2010s. Produced by the U. S. Geological Survey, the sheet emphasizes coordinate systems and topographic contours over dense human settlement, illustrating the stark geometric regularity of the borderlands' surveyed terrain.
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This is the sole edition of this map. No revisions or reprints were ever made.
1929 · Santa Maria
USGS Topo · 1:24,000
1929 · La Paloma
USGS Topo · 1:24,000
1930 · West Brownsville
USGS Topo · 1:24,000
1930 · Barreda
USGS Topo · 1:24,000
1936 · West Brownsville
USGS Topo · 1:31,680
1936 · Barreda
USGS Topo · 1:31,680
1936 · Santa Maria
USGS Topo · 1:31,680
1936 · La Paloma
USGS Topo · 1:31,680
1945 · Olmito
USGS Topo · 1:31,680
1953 · Brownsville
USGS Topo · 1:250,000