Community Research and Development Information Service - CORDIS


Although many geographical information systems (GIS) are very advanced in data processing and display, current GISs are not capable of physically-based modelling. Simulating transport of water and pollutants through landscapes is a particular problem in a GIS environment. A number of specific routing methods are needed in a GIS for hydrologic modelling such as the kinematic wave approximation for transport of surface water in a landscape. The PCRaster Spatial Modelling language is a GIS capable of dynamic modelling. It has recently been extended with a kinematic wave approximation simulation tool to allow for physically based water flow modelling. The LISFLOOD model is an example of a physically-based model written using the PCRaster GIS environment. LISFLOOD simulates river discharge in a drainage basin as a function of spatial data on topography, soils and land cover. Although hydrologic modelling capabilities have largely increased, there is still a need for development of other routing methods, such as a diffusion wave.

Additional information

Authors: DE ROO A P J, JRS Ispra (IT);WESSELING C G, PCRaster Environmental Software, Utrecht (NL);VAN DEURSEN W P A,
Bibliographic Reference: Paper presented: 3rd International Conference on Geocomputation, Bristol (GB), September 17-19, 1998
Availability: Available from (1) as Paper EN 41689 ORA
Record Number: 199811241 / Last updated on: 1998-10-27
Original language: en
Available languages: en