Geographic Data Fusion for the Determination of Drainage Structure Academic Article uri icon


  • Detailed mapping of drainage structure, including channel networks and upslope contributing areas is a prerequisite for predicting surface mnoff and soil erosion by means of spatially explicit hydrological models (Figure 1). Information on drainage structure is also necessary for calculating geomorphometric attributes, such as drainage density (Tucker et al. 2001), and for mapping vegetation habitats and landform elements (Svoray and Shoshany 2003). Manual methods of mapping drainage structure are reliable but labor- intensive and therefore inappropriate for application over wide regions. As an alternative, automatic methods for drainage structure mapping have been developed using mainly digital elevation models (DEM). The extensive scientific efforts to develop automatic procedures are well expressed by Gumell and Montgomery (2000):"... the most …

publication date

  • January 1, 2004