ABSTRACT
Human dependence on fresh water is majorly concentrated on either one or a combination of groundwater and surface water resources. These are mostly interdependent. A better scientific understanding of the interaction Ground Water–Surface Water (GW–SW) helps in the effective planning and management of limited freshwater resources. To describe this interaction, numerous physical and computational models have been developed in the past few decades. The computational modelling of (GW–SW) interaction on the sub-basin scale has received scientific attention in recent years because of its advantages over other modelling techniques. The analysis over the sub-basin scale allows a more comprehensive understanding of the field characteristics as it considers the soil and hydraulic parameters. This chapter focuses mainly on the quantitative aspect of the GW–SW coupling strategies from a computational modelling perspective. It is further discussed about the flow processes, the governing equations, methodological approach, and data extraction, which are essential for developing a successful model. The applications of available computational models in the field of water resources are also explained. Furthermore, the challenges and opportunities associated with the available modelling techniques are also extensively covered in this chapter.
