International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 01 | Jan 2024
p-ISSN: 2395-0072
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Hydrological Model for Estimating Volume of Inflow into the Peppara Dam Reservoir Using GIS and SWAT Midhila M1, Fathima Sherin T2 1Assistant Professor, Dept.of Civil Engineering, Vidya Academy of Science and Technology Technical Campus,
Kerala, India
2Assistant Professor, Dept.of Civil Engineering, Vidya Academy of Science and Technology Technical Campus,
Kerala, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - This article presents an application of SWAT
wild life sanctuary is one of the most beautiful wildlife sanctuary of kerala. Peppara dam reservoir located in latitude of 8.6228° N and longitude of 77.1379°E. Area of the reservoir is 5.82 sq.km
model to simulate and predict the volume of inflow into Peppara dam reservoir. The model was calibrated and validated using SWAT CUP (SWAT-Calibration Uncertainty Programs). The calibration was done from 2004 to 2013 and validation was performed from 2014 to 2018. The coefficient of determination (R2) and Nash Sutcliffe Efficiency (NSE) obtained were 0.77 and 0.69 respectively during calibration stage and 0.79 and 0.74 respectively during validation stage. Model showed good performance during calibration and validation stage. This rainfall runoff can be used for predicting the volume of inflow into the reservoir for various rainfall events and it can help in planning the water distribution to TVM corporation.
Key Words: Watershed model; GIS; SWAT: Peppara dam reservoir
1.INTRODUCTION Hydrological model is a simplification of real-world system, that helps in understanding, predicting and managing water resources. Soil and Water Assessment Tool (SWAT) is one type of tool used for developing a hydrological model. Hydrological processes occur in watershed. The analysis of watershed is a fundamental step. Hydrological models are used to determine the stream flow over a long period. This model which produces historical current or natural stream flow records and is used to generate the future yields. Objective of this research is to develop a model for predicting volume of inflow into the Peppara dam reservoir. This model will help in planning the water distribution as well as for electricity generation planning in TVM corporation. The SWAT-CUP tool is a program that interfaces with Arc SWAT to perform calibration, validation and sensitivity analysis.
2. STUDY AREA The catchment area of Peppara dam reservoir is the study area. Peppara dam is located at Peppara around 55 km from Trivandrum City. Peppara dam is constructed across Karamana river. It is the main drinking water supply to Thiruvananthapuram district and sub urban areas. Peppara
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Fig -1: Location map of Peppara
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