In SPRING is an integrated cross-linking of water systems available in order to consider exchange processes between surface water and ground water. This tool is available for steady-state and transient problems and for 2D or 3D problems.
To use this module of the interaction between surface water and groundwater it is only necessary to ensure that a clear direction of flow is given and the branches of waters are linked together.

No additional water parameterization compared to the usual node-related attributes to processes of interaction (water level height + leakage) is needed! A parameterization of the channel hydraulic and cross-profiling, as they are required in couplings to surface water simulation software, is not required!

Using the cross-linking of waters in SPRING will ensure that the upstream quantities of groundwater rates are considered in the exchange balance with the downstream quantities. This ensures that during the drying up of river sections only so much water can trickle away which the existing amount of upstream water, for example seasonal factors, allows.

Optionally, selective inflows or outflows to / from the waters can be defined which are necessary e.g. to present inputs and outlets of water treatment plants, mill ditches, power plants, water production plants, irrigation systems etc.

Powerful assistance functions and test routines are available for the cross-linking of water systems:

All in SPRING proven attributions in terms of quantity limits can be fully used in the watersystem interaction!

SPRING can in the flow simulation perform an automatic estimation of water level heights (steady-state and transient).
This requires only a simplified parameterisation of individual river sections or the entire, cross-linked water system with the wetted perimeter, the slope and Manning-Strickler coefficient.