Raster GIS Data (Grid data)
The actual rainfall/runoff model is a grid model calculated by Golden Software's Surfer. We can distinguish 3 categories:
- Basic grid files with "raw data" that have to be prepared by the user. This has to be done outside of the rainfall/runoff model, for instance with ArcView Spatial Analyst. However, the model contains an interface for easy conversion of ESRI raster files (ASCII format) to Surfer grid files.
- Grid input files that can be manipulated interactively by the user for the purpose of model calibration (inside of the rainfall/runoff model).
- Grid output files generated by the model to store model results.