6/9/2023 0 Comments Visual Modflow Flex![]() Boundary conditions including recharge and evapotranspiration are derived from the Soil and Water Assessment Tool (SWAT) hydrologic model. Model design, calibration, and validation have been carried out. Groundwater level data of 37 wells spread over the study area has been used for the model simulation. A four-layer model covering an area of 940 km2 has been prepared using Visual MODFLOW Flex 7.0. In this study, the Visual MODFLOW Flex 7.0 is used to simulate the flow of groundwater through aquifers in the Thuthapuzha sub-basin, a sixth-order sub-basin of the Bharathapuzha river basin Kerala's second-largest river basin. Geological Survey (USGS) is a widely used modular three-dimensional block-centered finite difference code used for simulating dynamic features and scenarios in groundwater systems. The modular finite-difference groundwater flow model (MODFLOW) developed by the U.S. Groundwater modeling can be used as an efficient tool to understand the regional flow as well as the hydrogeological condition of the groundwater system. However, it is complex due to uncertainties in subsurface parameters. Groundwater management is vital to ensure the sustainable availability of water. In Kerala, a state in Southern India, groundwater is the drinking water source for 62% of the population. India is the largest user of groundwater in the world, accounting for a quarter of the world’s annual groundwater extraction.
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