1. Senior Lecturer, River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Pulau Pinang 14300, Malaysia (corresponding author).
2. Professor and Deputy Director, REDAC, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Pulau Pinang 14300, Malaysia.
3. Professor and Director, REDAC, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Pulau Pinang 14300, Malaysia.
4. Assistant Professor, Dept. of Civil Engineering, Univ. of Gaziantep, Gaziantep 27310, Turkey,