ESPIO CREEK. Espio Creek rises in the Big Wells oilfield in southeastern Zavala County (at 28°39' N, 99°30' W) and crosses through Dimmit County as it runs southeast for eighteen miles to its mouth on the Nueces River, seven miles west of Cotulla in west central La Salle County (at 28°27' N, 99°22' W). The creek rises in rolling prairie surfaced by shallow to moderately deep clay loams that support mesquite, grasses, and chaparral and descends to flat terrain with locally shallow depressions, surfaced by clayey and sandy loams that support water-tolerant hardwoods and grasses. The name of the creek is probably from Spanish espión ("spy").
The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article."ESPIO CREEK," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/rbe80), accessed October 14, 2013. Published by the Texas State Historical Association.