Assessment of Groundwater in Ghataprabha Sub-Basin Using Visual MODFLOW Flex

Nagraj S. Patil; Santosh Dhungana; B. K. Purandara

Assessment of Groundwater in Ghataprabha Sub-Basin Using Visual MODFLOW Flex

Nagraj S. Patil ¹, Santosh Dhungana ¹, B. K. Purandara ²

Affiliations
1 Department of Water and Land Management, VTU, Belagavi, Karnataka, India
2 National Institute of Hydrology, Hard Rock Regional Centre, Belagavi, Karnataka, India

Abstract
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In the present study, an attempt is made to simulate the current groundwater level in the Ghataprabha sub-basin (Krishna basin) in southern India. For this purpose, a single layered aquifer was conceptualized using Visual MODFLOW Flex ver.14.2. Model calibration was carried out using Parameter Estimation (PEST), with R², RMSE and NRMSE as model evaluation criteria. Model behaved well with the value of 0.99, 6 m and 2.13% for R², RMSE and NRMSE respectively. Groundwater modelling results showed that there is an increase of 1.46 m of groundwater level in 5 years. Incorporating the increasing trend of groundwater level in planning water resource projects would be fruitful.