SAN AMBROSIA CREEK
SAN AMBROSIA CREEK. San Ambrosia Creek rises six miles northeast of El Indio in south central Maverick County (at 28°33' N, 100°13' W) and flows southeast for thirty-six miles before emptying into the Rio Grande three miles south of the juncture of Maverick, Dimmit, and Webb counties in far northwest Webb County (at 28°09' N, 100°07' W). The vegetation in the upper reaches features water-tolerant hardwoods, conifers, and grasses; mesquite and grasses predominate downstream. The creek rises in flat terrain with shallow depressions and flows into rolling prairie. The soils are clayey and of variable permeability.
The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article."SAN AMBROSIA CREEK," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/rbs39), accessed May 19, 2013. Published by the Texas State Historical Association.