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SANTO TOMAS CREEK. Santo Tomas Creek rises twenty-one miles west of Callaghan in central Webb County (at 27°52' N, 99°45' W) and runs south for twelve miles to its mouth on the Rio Grande, sixteen miles northwest of Laredo (at 27°43' N, 99°45' W). The surrounding rolling hills and flat terrain have locally shallow depressions and are surfaced by clay and sandy loams that support scrub brush, mesquite, cacti, grasses, and water-tolerant hardwoods.


The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article.

"SANTO TOMAS CREEK," Handbook of Texas Online (, accessed November 29, 2015. Uploaded on June 15, 2010. Published by the Texas State Historical Association.