Hydrological Modelling using Soil and Water Assessment Tool for Shivna River Basin and Calibration Using SWAT-GLUE Algorithm

Abstract

The management of water in India faces significant challenges in both the level i.e., quality and
quantity. In order to address these challenges and to source the rational and efficient management of
water resources, it is necessary to understand the different issues involved in the water cycle works.
Thus, hydrological models are important tools that have been used in water resource planning and its
management. In this study the hydrology of Shivna sub-basin which flows along the northwest
boundaries of the district Aurangabad is modelled, using the Soil and Water Assessment Tool
(SWAT). Its capacity is 0.951000 cu.km. It aims to simulate the stream flow, establish the water
balance, and estimate the monthly volume inflow to Shivna river in order to help the managers to
handle and plan this important reservoir. This study uses total 30 years of data from year 1983 to
2013. The study focuses on the creation, organization, and generation of input data. Input data like
soil condition, climatic condition etc. is been search using a Geographic Information System i.e. (
ArcGIS) then the configuration of the data is to be done. Thereafter the basin delineation and
Hydrological Response Unit (HRU) definition is did using Arc SWAT. Once the HRU is defined the
SWAT stimulation is done. After that the validation of the models is done for evaluating the stimulated
outflow. The Coefficient of Determination (R²) is obtained as 0.8082. Evaluation of the results shows
that the results are satisfying; they show that this model can represent the overall hydrological regime
of the Shivnasub-basin.