Dale J. Roenigk, Robert G. Paterson, Maureen A. Heraty, Edward J. Kaiser, and Raymond J. Burby. Department of City and Regional Planning, The University of North Carolina at Chapel Hill, June 1992. 197 pp. CURS Report No. 92-01. For information write to: Water Resources Research Institute of The University of North Carolina, North Carolina State University, Box 7912, Raleigh, NC 27695-7912.