Finite element method
Any combination of 1D, 2D and 3D elements possible
Interactive mesh creation with automatic mesh generation and mesh refinement
Stochastic fracture calculation
Exact representation of geological structures using collapsing layers
Including tunnel structures in the mesh and calculations
Steady-state flow / transient flow calculations
Calculation and display of streamlines, path lines and travel times
Saturated/unsaturated flow, including the calculation of the free (unconfined) surface
Heat transport
Density-dependent flow
Mass transport taking into account dispersion/diffusion, adsorption, production, disintegration and decay
Transport of nuclide chains
Reactive mass transport
Flood simulation using box models
Automatic calibration methods (gradient method and inverse modelling)
Drainage flow (leakage, with rate restrictions)
Special boundary conditions for geothermal calculations
Recharge calculations based on a climatic soil water balance
Interface with the ArcInfo software system
Interactive control of the software via the SPRING graphical user interface or by batch files
Extensive post-processing options for the displayed results with the overlay of bitmap (TIFF) files and output in DXF format
Possibility of automatic interpolation of transient boundary conditions between specified time steps
Output options for the model data and calculation results in a freely accessible format as an ASCII file.
Automatic calibration procedures
Drainage water balance based on the meshed surface water body
Inverse transport calculation for catchment area determination