JABONCILLOS CREEK (Webb County). Jaboncillos (Jaboncillo or Jamoncillos) Creek rises nine miles northwest of Callaghan in central Webb County (at 28°00' N, 99°32' W) and runs east for fifteen miles to its mouth on Dolores Creek, twelve miles northeast of Callaghan (at 27°58' N, 99°19' W). It traverses low-rolling to flat terrain with locally shallow depressions, surfaced by clay and sandy loams that support grasses, mesquite, chaparral, and water-tolerant hardwoods.