Digital Elevation Model

floodFILL requires digital elevation data in grid format and additional break lines (lines containing surface features). Grids featuring required hydrological parameter are derived from the digital elevation model. 

The input grids for the spreading model are created using the GIS ArcView. The model processes ArcView Grid files in any desired resolution.

The resolution of the digital elevation model depends on the problems under consideration and computer hardware capacities.

The processing of the elevation data and the derivation of the hydrological parameter has only to be repeated in case of any change of the terrain surface, e.g. additional breaklines due to a dam construction.