Surface Water Interaction Modelling Using Visual MODFLOW and GIS

PHYLARESModel setup / ch.6__________________________________________________________________________________________416.1.8. Hydraulic conductivityHydraulic conductivity zones vary widely in the area. The total hydraulic conductivity of eachHCOV layer is indicated in Table 6.4. (According to Solomon T, 2007), the total conductivity ofthe aquifers given in Table 6.4, were taken from a detailed hydro-geological study of the Flemishunderground (Envico 2002a; Envico 2002b; Haecon 2002), and from pumping tests preformedby Provincial and Intercommunal drinking water society of the Province Antwerp (PIDPA).6.1.9 RiverThe river in the model domain is the part of the Aa river (Figure 6.8). The river flows fromNorth-East to South West direction within the model domain. Aa river has an average dischargeof 1.74 m 3 /s, a water depth of 1.15 m and width of 7.5 m. Quantifying the amount of waterexchanged between this river and the groundwater of the area is one of the major objectives ofthis model. The river stage, river bed bottom elevation, river bed thickness and river conductancewere the data used for the surface water groundwater interaction modeling. The river boundarycondition package was used for data entry into visual MODFLOW.Figure 6. 8Two- dimensional view of the river segment in the model domain.______________________________________________________________________________________Groundwater – Surface water interaction modeling using visual MODFLOW and GIS