DHI-WASY FEFLOW 11.0 
FEFLOW (Finite Element subsurface FLOW system) is a software product for hydrogeological modeling: groundwater flow, contaminant transport, and heat transfer within the subsurface. FEFLOW enables the calculation of hydrogeological conditions, as well as the prediction and monitoring of:
- groundwater behavior in various areas, including during the construction of buildings and structures (tunnels);
- mine water;
- saltwater intrusion into aquifers;
- seepage through dams and levees;
- various land-use practices and potential climate change scenarios;
- groundwater recharge and natural depletion;
- geothermal energy (deep and shallow layers of the earth, both open and closed systems);
- interaction between groundwater and surface water.

FEFLOW (Finite Element subsurface FLOW system) is suitable for numerous different applications in the simulation of flow and transport processes in porous media, ranging from the laboratory scale to the continental scale. A few typical examples are listed here:
- Study of pollutant dispersion;
- Evaluation of remediation and decontamination strategies;
- Study of groundwater drawdown and rise in mining areas;
- Mine dewatering studies;
- Survey of saltwater intrusion;
- Isotope analysis for determining groundwater age;
- Design of geothermal power plants (HDR, heat pump systems);
- Coupled groundwater/surface water simulation via online linking with Mike11 (by DHI) and Hydro_AS-2D (by M. Nujic);