Application of SWAT Model for Water Resources Management and Planning in the Lower Vellar Sub-Basin, Cuddalore District, Tamil Nadu, India
Author : Poonkundran T and Poongothai S
Abstract :
Geospatial techniques, including Geographic information systems (GIS) and remote perception, are used to analyze the spatial distribution of rainfall and its relationship with topographic and climatic factors. This research aims to identify and prioritize potential sites for artificial recharge structures using a multidisciplinary methodology that integrates morphometric analysis, rainfall pattern analysis, water quality evaluation, hydrological modeling via SWAT and spatial multi-criteria decision-making through the Analytical Hierarchy Process (AHP). SWAT modeling allowed the simulation of surface runoff, evapotranspiration, water yield and percolation, based on 24 delineated mini-watersheds. Surface runoff averaged 235–248 mm annually, while percolation ranged between 127–149 mm, suggesting a moderate recharge capacity. The outcomes are expected to contribute to long-term aquifer sustainability, enhance water security and improve agricultural productivity in vulnerable watersheds like the Lower Vellar Sub-watershed.
Keywords :
SWAT, Lower Vellar Watershed, Solar Radiation, Humidity, Wind Speed.
