Bachelor of Science, Cornell University, 1971. Master of Science, Harvard University, 1972. Doctor of Philosophy, Harvard University, 1977.
Assistant professor Michigan State University, East Lansing, 1977-1980. Professor Duke University, Durham, North Carolina, since 1980. Director Water Resources Research Institute, North Carolina State University, Raleigh, since 1996.
Member North America Lake Management Society (president, 1995), North Carolina Water Resources Association (president 1994).
Married Ellen Jo Waldman, June 21, 1975. Children: Sarah, Michael.