KELLY, Walton R., Illinois State Water Survey, Prairie Research Institute, University of Illinois, 2204 Griffith Drive, NA, Champaign, IL 61820, TAYLOR, S.J., Illinois Natural History Survey, Prairie Research Institute, University of Illinois, 1816 S. Oak St, Champaign, IL 61820, PANNO, Samuel V., Illinois State Geological Survey, Prairie Research Institute, University of Illinois, 615 E Peabody Dr, Champign, IL 61820 and ZHENG, Wei, Illinois Sustainable Technology Center, Prairie Research Institute, University of Illinois, One East Hazelwood Drive, Champaign, IL 61820, wkelly@illinois.edu