1. Postdoctoral Fellow, Dept. of Civil and Natural Resources Engineering, Univ. of Canterbury, Christchurch 8140, New Zealand (corresponding author).
2. Senior Lecturer, Dept. of Civil and Natural Resources Engineering, Univ. of Canterbury, Christchurch 8140, New Zealand.
3. Postgraduate Student, Dept. of Civil and Natural Resources Engineering, Univ. of Canterbury, Christchurch 8140, New Zealand.
4. Senior Modelling Advisor, Technical Support Division, Mekong River Commission Secretariat, Phnom Penh, Cambodia.
5. Modeller, Technical Support Division, Mekong River Commission Secretariat, Phnom Penh, Cambodia.