openLISEM is a spatial hydrological model that simulates runoff, sediment dynamics and shallow floods in rural and urban catchments. It is an event based model, that can be used for catchments from 1 ha to several 100 km2. The model is designed to simulate the effects of detailed land use changes or conservation measures during heavy rainstorms. It is a model designed to be used in disaster risk management, not for long term estimates.

LISEM (the LImburg Soil Erosion Model) has been created to simulate the spatial effects of detailed soil and water conservation measures. These can be for instance on-field change of tillage direction, mulching, grass strips and minimum tillage, but also catchment based placement of storage buffers and sediment traps. Changes in soil structure by crusting and compaction can be taken into account.

Recent aditions are:

  • Shallow floods based on the st Venant equation (with the University of Orleans)
  • Specify urban environments (UN-HABITAT project, Kampala Integrated Flood Management project)
  • Code to route substabnces such as pesticides (with Laboratoire de Solides et Fluide, Marie Curie University, Strasbourg)
  • Tile drain systems (Bioforsk Norway)
  • Water repelency effects, for instance after forest fires (Alterra, Wageningen)