Surface Water Interaction Modelling Using Visual MODFLOW and GIS

PHYLARESModel setup / ch.6__________________________________________________________________________________________446.2.3 Constant Head boundaryConstant head boundary input has the highest share and the values were taken from the values ofa model for the whole Nete Catchment (Figure 6.11). The constant head values were assignedonly to the cells at the model boundary. Constant head boundary contributes 66% of the input.Constant head boundary (m)Figure 6. 11Head values of layer 1 used for constant head boundary.6.3 Output from the modelConstant head boundary, river leakage, drains and wells constitute the means of groundwateroutput. Constant head consists of 11% of output, and river leakage consists 3% of the output.Groundwater discharge due to pumping through wells is the other means of output. There arethree pumping wells in the model domain. Pumping through these wells represents 1% ofgroundwater discharge. The steady-state model uses three pumping wells (Figure 6.12 and Table6.6). Pumping data was input to Visual MODFLOW manually. The required data were:• Well Name• Easting (X)______________________________________________________________________________________Groundwater – Surface water interaction modeling using visual MODFLOW and GIS