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LOS OLMOS CREEK (Starr County). Los Olmos Creek rises at the confluence of Las Blancas and El Sauz creeks in central Starr County (at 26°34' N, 98°52' W) and runs southeast for twenty miles to its mouth on the Rio Grande, two miles southeast of Rio Grande City and a mile east of the port of entry bridge (at 26°21' N, 98°48' W). The immediate vicinity is flat and surfaced by clays and loams that support water-tolerant hardwoods, conifers, and grasses. The surrounding topography includes low-rolling hills and prairies with some mesquite.

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Handbook of Texas Online, "Los Olmos Creek (Starr County)," accessed November 20, 2017,

Uploaded on June 15, 2010. Published by the Texas State Historical Association.