A Preliminary Lumped Assessment of Pollution Risk at Aquifer Scale by Using the Mean Residence Time. Analyses of Potential Climate Change Impacts

An assessment of the risk for groundwater pollution and vulnerability to pumping can help identify strategic bodies define sustainable management measures resources. In this paper, we propose a new method make preliminary estimation at aquifer scale through lumped turnover time index (T index). A (L-RISK index) was defined assess significance scale. Both L-RISK T indices were employed calibrate linear regression model that showed good inverse correlation in eight aquifers Upper Guadiana Basin (Spain). This novel be applied analyze wide range with limited information order potential aquifers. It also allows one impacts climate change on L-RISK. The results high variability (8–76 years). Three them had significant greater mean values, which could considered main future, will increase between 8 44%, decrease all (1–18%).