JACKS CREEK. Jacks Creek rises in a stock tank in the northern corner of Fayette County (at 30°07' N, 96°39' W) and runs south for nine miles, passing through a major flood control impoundment formed by Dam Number Fifteen at Winedale before reaching its mouth on Cummins Creek (at 30°01' N, 96°41' W). It traverses an area of gently sloping hills surfaced by shallow sandy loam surface soils over a dense clay sublayer. The area is good for agriculture and is used primarily to produce hay and to provide improved pasture for cattle and horses. The creek's name may be derived from that of William H. Jack, who had a land grant in the area.