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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.

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"HORSEPEN BAYOU," Handbook of Texas Online (, accessed December 01, 2015. Uploaded on June 15, 2010. Published by the Texas State Historical Association.