Larry. W. Mays, Ph.D., PE, P.H., is Professor of Civil and Environmental Engineering at Arizona State University and former chair of the department. He is the former Director of the Center for Research in Water Resources at the University of Texas at Austin, where he also held an Engineering Foundation Endowed Professorship. A registered professional engineer in seven states and a registered professional hydrologist, he has served as a consultant to many organizations. Professor Mays is the author of "Water Resources Engineering" (John Wiley & Sons, Inc.) and "Optimal Control of Hydrosystems"