
Thompsonville sits within a landscape defined by the drainage of the Arroyo Grande, which winds through the central portion of this South Texas quadrangle. The area is characterized by large-scale ranching operations, marked by an extensive network of named thoroughfares such as Peyote Ranch Rd and Vela Pena Ranch Rd that provide access to the interior of these historic landholdings. To the south, Los Tanques Cr crosses the terrain near the southern boundary. This 2022 survey captures the modern road infrastructure, including FM 649 and FM 3073, while clearly delineating the political boundary between Zapata County and Jim Hogg County. The layout of the ranch roads, including Casa Blanca Ranch Rd and Aa Martinez Rd, reflects the enduring legacy of family ranching and traditional land use patterns in this part of the state.
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This is the sole edition of this map. No revisions or reprints were ever made.
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