ESTIMATING GROUNDWATER VOLUMETRIC MASS BALANCE WITH HYDRAULIC HEAD USING GROUNDWATER MODELING SYSTEM IN TRIPURA, INDIA

In this study, a three-dimensional finite-difference groundwater flow model has been developed to investigate the variety of hydro-geological conditions and simulating volumetric flow budget under different stress conditions in the aquifer of Agartala and Khowai city under Agartala and Khowai district respectively in the state of Tripura. MODFLOW package using groundwater Modeling System (GMS) was applied for this study to find out the volumetric flow budget and hydraulic heads for groundwater under steady state analysis method. Lithologs (soil strata), aquifer parameters during pumping test, hydro-meteorological data, catchment characteristics etc. were used to calibrate and validate the conceptual model. The objective of this paper is to develop conceptual models run by GMS MODFLOW for estimating the groundwater volumetric mass balance and hydraulic head at different point with varied withdrawal condition of three seasons. The results conclude the hydraulic heads decrease against discharge wells and it increases towards recharge wells and this model will help to estimate the groundwater volume for water budgeting.