*Brijesh K yadav¹、Anooja Thomas²、kuntal Purkayastha³ (1.Associate Professor, Department of Hydrology, Indian Institute of Technology (IIT) Roorkee, Roorkee-247667, Uttarakhand, India, Email: brijkfhy@iitr.ac.in, 、2.Research Scholar, Department of Hydrology, Indian Institute of Technology (IIT) Roorkee, Roorkee-247667, Uttarakhand, India、3.Graduate Student, Department of Hydrology, Indian Institute of Technology (IIT) Roorkee, Roorkee-247667, Uttarakhand, India)