The Rio Grande snakes along the international boundary south of Weslaco, defining a landscape of irrigation and historic land tracts known as bancos. This 2013 survey details the complex hydraulic environment where the Donna Main Canal and the Donna Pump facility support the region's agricultural productivity. Numerous numbered bancos, such as Longoria Banco Number 39 and Ratamal Banco Number 105, illustrate the historical shifting of the river channel and subsequent land adjustments.
42 named features on this map. Tap any name to fly to it.
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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
1949 · Mc Allen
USGS Topo · 1:250,000
1953 · Brownsville
USGS Topo · 1:250,000
1954 · McAllen
USGS Topo · 1:250,000
1956 · Mercedes
USGS Topo · 1:24,000
1956 · Progreso
USGS Topo · 1:24,000
1956 · Brownsville
USGS Topo · 1:250,000
1956 · Port Isabel
USGS Topo · 1:250,000
1957 · Mc Allen
USGS Topo · 1:250,000