1. Postgraduate Student, Centre for Applied Modelling in Water Engineering, School of Civil and Environmental Engineering, The Univ. of Adelaide, Adelaide SA 5005, Australia.
2. Graduate Hydrologist, Water Assessment, Natural Resources and Mines, Indooroopilly QLD 4068, Australia.
3. Associate Professor, Centre for Applied Modelling in Water Engineering, School of Civil and Environmental Engineering, The Univ. of Adelaide, Adelaide SA 5005, Australia.
4. Professor Emeritus, School of Civil and Environmental Engineering, Cornell Univ., Ithaca, NY 14853-3501.