Assessing Impacts of Mining-Induced Land Use Changes on Groundwater and Surface Water Quality Using Isotopic and Hydrogeochemical Signatures

The current investigation aimed to assess the impact of land use changes on groundwater quality because extensive mining activities in coal province Mahan River catchment area, which is located Surguja district Chhattisgarh, India. water index (WQI), Collin’s ratio, stable isotope ratios molecules (δ18O and δD), various physicochemical parameters were measured determine suitability for domestic purposes. Water samples collected from dug wells, tube river water, mine analyzed, results revealed that 28% classified as excellent 44%were good during pre-monsoon period. In post-monsoon period, 50% categorized good, while 35% poor, whereas areas, 54% found be unsuitable this increased 77% Stable analysis was also conducted: plotted right Local Meteoric Line (LMWL) bivariate plot, observed slopes all smaller than LMWL. enrichment δ18O ratio negative d-excess values at certain locations suggest occurrence non-equilibrium processes mixing mechanisms.