HORSEPEN BAYOU. Horsepen Bayou rises two miles north of Clear Lake City and the Lyndon B. Johnson Space Center in southeastern Harris County (at 29°35' N, 95°10' W) and runs east for five miles to its mouth on Armand Bayou, two miles north of Clear Lake (at 29°35' N, 95°05' W). It traverses flat to low-rolling terrain surfaced by sandy loams, clay loams, and dark, commonly calcareous clays that support water-tolerant hardwoods, conifers, and grasses.
The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article."HORSEPEN BAYOU," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/rhh09), accessed December 12, 2013. Published by the Texas State Historical Association.