The usability of contours in erosion modelling :a case study on ZABAGED, Czech Republic

Abstract

This paper aims to the evaluation of the assessment of topographic potential for erosion and deposition when the contour lines from the Czech Fundamental Base of (3eographic Data (ZABAGED) are used. On a hill slope above the Opava River a DEM from field measurements and a DEM from contours were created. The potential for erosion and deposition was computed on the both DEMs and the results were compared. We consideied the result based on the DEM from field measurement as a reference. The potential for erosion and deposition based on the contour lines showed large inaccuracies in its spatial distribution. The main drawbacks of ZABAGED contour lines mentioned in literature proved to be significant in erosion and deposition modeling