Larry W. Mays is professor of civil and environmental engineering at Arizona State University and former chair of the department. He was formerly 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 consultant to many organizations. A widely published expert on water resources, he wrote Optimal Control of Hydrosystems (Marcel Dekker) and was editor in chief of both Water Resources Handbook (McGraw-Hill) and Hydraulic Design Handbook (McGraw-Hill). Co-author of both Applied Hydrology and Hydrosystems Engineering and Management published by McGraw-Hill, and was the editor in chief of Reliability Analysis of Water Distribution Systems (ASCE), and co-editor of Computer Modeling of Free-Surface and Pressurized Flows (Kluwer Academic Publishers). He has published extensively on his research in water resources management.