ARROYO SEGUNDA. Arroyo Segunda rises just north of Panther Mountain in southeastern Presidio County (at 29°24' N, 103°58' W) and runs east for seven miles to its mouth on Fresno Creek, at the eastern edge of Rincon Mountain (at 29°24' N, 103°52' W). The surrounding desert mountain terrain of volcanic rocks is surfaced by sands, clay loam, and rough stone in which sparse grasses, cacti, and desert shrubs grow.
The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article."ARROYO SEGUNDA," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/rba80), accessed June 19, 2013. Published by the Texas State Historical Association.