Investigation of groundwater quality by mathematical model MT3DMS (Case study: Rafsanjan plain)

In desert and dry regions such as Rafsanjan plain, use of the groundwater resources is more than surface water resources. In this research, MODFLOW and MT3DMS were implemented for a quantitative and qualitative modeling tools to investigate groundwater quality in Rafsanjan plain. The presented qualitative model for this aquifer was compared by observed data and calibrated. Then sensitivity analysis was preformed and this model was used to predict the next 2 and 5 years. Results showed that concentration of various parameters available in groundwater increase in the whole plain, increase in chloride (CL) and electrical conductivity (EC) being more than other parameters. Therefore, it was concluded that discharge and agriculture works should be decreased and recharge increased in this plain.