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PURGATORY CREEK. Purgatory Creek rises near Devil's Backbone in eastern Comal County (at 29°56' N, 98°08' W) and flows southeast for twenty miles to its mouth on the San Marcos River, near San Marcos in Hays County (at 29°53' N, 97°56' W). It crosses an area of the Balcones Escarpment characterized by flat terrain with local shallow depressions and clayey soils with rock outcroppings. Vegetation consists of live oak and Ashe juniper woods, but much of the area is used for cropland.

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"PURGATORY CREEK," Handbook of Texas Online (, accessed November 30, 2015. Uploaded on June 15, 2010. Published by the Texas State Historical Association.