
Lasara serves as the primary hub of this agricultural landscape in the Rio Grande Valley, situated near the boundary between Willacy Co and Hidalgo Co. The area’s character is defined by a sophisticated water management system essential for local farming, featuring the extensive Reservoir Unit Number One and Reservoir Unit Number Two, which are fed and drained by the Main Supply Canal and the Main Branch Northeast Canal.
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This is the sole edition of this map. No revisions or reprints were ever made.
1922 · La Sal Vieja
USGS Topo · 1:62,500
1929 · Santa Rosa
USGS Topo · 1:24,000
1933 · Santa Rosa
USGS Topo · 1:31,680
1939 · Linn
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 · La Sal Vieja
USGS Topo · 1:24,000
1956 · Santa Rosa
USGS Topo · 1:24,000
1956 · Yturria
USGS Topo · 1:24,000