Overland Flow Performance

Calculation of overland flow can be a significant source of numerical instabili­ties in MIKE SHE. Depending on the model setup, the overland flow time step can become very short - making the simulation time very long.

The chapter Surface Water in MIKE SHE (V1 p. 99) contains many more details on simulating overland flow and the coupling to MIKE Hydro River. In particular the section Overland Flow Performance (V1 p. 105) contains detailed information on improving the performance of the overland flow in your model.