Rainfall Runoff Modelling of Machhu II basin, Morbi, using Soil and Water Assessment Tool
Prapti Ganatra
Post Graduation Student, Department of Civil Engineering, Gujarat Technological University, Ahmedabad (Gujarat) , IN
Ass.Prof. Vidhi Khokhani
Post Graduation Student, Department of Civil Engineering, Gujarat Technological University, Ahmedabad (Gujarat) , IN
Keywords: Runoff, SWAT, Rainfall, ArcGIS, Urbanization.
Abstract
“The objective of this study is to estimate the runoff on Machhu II basin by applying the SWAT (Soil and Water Assessment Tools). The present Watershed covers an area of 427.34sq km. To perform the study at regional scale, an effort is made to combine the geospatial data with the available hydrological and meteorological data. The Soil and Water Assessment Tool (SWAT) was designated to spot its applicability in developing urban basins. This work provides a case study for simulating hydrologic processes on small Watershed, which is experiencing the rapid urbanization, by adapting SWAT modelling tools on ArcGIS platform. Simulation of SWAT for daily, monthly as well as yearly basis is done by using 35 years of daily precipitation as well as daily maximum and minimum temperature, to obtain the runoff for corresponding precipitation. The coefficient of correlation (r) obtained for rainfall and corresponding to runoff is found to be 0.9657.
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