Empirical Model and Validation of Bar Formation in Sand Bed Channel Duratul Ain Tholibon, Junaidah Ariffin, Jazuri Abdullah, Ainamardia Nazarudin, Nur` Ain Mat Yusof and Dulina Tholibon MATEC Web Conf., 95 (2017) 07028 Published online: 09 February 2017 DOI: 10.1051/matecconf/20179507028