The Rio Grande defines the southern boundary of this South Texas landscape, creating a complex network of oxbow lakes and water management features along the international border. The community of Progreso serves as a central hub, linked to the south by the Progreso Toll Bridge and surrounded by a grid of agricultural roads such as Mile 2 W and S Border Ave. Significant water control infrastructure is visible in the east, including the Mercedes Settling-Basin and the Mercedes District Settling Basin, which support the region's intensive irrigation needs.
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This is the sole edition of this map. No revisions or reprints were ever made.
1914 · San Juan
USGS Topo · 1:48,000
1916 · San Juan
USGS Topo · 1:62,500
1929 · Santa Maria
USGS Topo · 1:24,000
1929 · La Feria
USGS Topo · 1:24,000
1936 · La Feria
USGS Topo · 1:31,680
1936 · Santa Maria
USGS Topo · 1:31,680
1949 · Mc Allen
USGS Topo · 1:250,000
1953 · Brownsville
USGS Topo · 1:250,000
1954 · McAllen
USGS Topo · 1:250,000
1956 · La Feria
USGS Topo · 1:24,000