Surface Water Interaction Modelling Using Visual MODFLOW and GIS

PHYLARESConclusions and Recommendations/ch.9_________________________________________________________________________________649.2. Recommendations and future considerationsIn this work, modeling of groundwater – surface water interaction has been carried out ina part of the Nete Catchment using Visual MODFLOW and GIS tools.Simulation of the steady state condition of the groundwater system has been done.However, there are uncertainties in input parameters involved during the modelcalibration.The model has several limitations due to its assumptions. For example, because weassume steady-state conditions, we must ignore transient hydrologic processes. Theseinclude variably and intermittent pumping-well rates, as well as seasonal and annualfluctuations in river stage, precipitation, and evapotranspiration.To reduce these limitations as much as possible, the following improvements arerecommended for future modeling:1. Assigning accurate parameter values as much as possible (e.g., Kh, Kv).2. Perform transient-model runs. Transient simulations will help us to understandeffects of several influential factors, including pumping rate and seasonal riverfluctuations.3. Combine groundwater modeling with other methods of recharge – dischargecharacterization.4. Collect and evaluate data to improve critical components of the system such asthe aquifer and/or river boundary conditionsIn general, further studies which will enhance this model using more accurate data areneeded.______________________________________________________________________________________Groundwater – Surface water interaction modeling using visual MODFLOW and GIS