1. Department of Civil Engineering, Faculty of Engineering, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak 94300, Malaysia
2. School of Civil Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang 14300, Malaysia
3. River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia, Nibong Tebal, Penang 14300, Malaysia
4. School of Humanities, Universiti Sains Malaysia, Penang 11800, Malaysia