With the development of digital hydrology and distributed hydrological modeling, more and more hydrologists turn to h-ydrological modeling based on the watershed features derived from digital elevation model (DEM). The DEM spatial resolution and sampling method have great impact on hydrology modeling. In this paper the impact of the DEM resolution on derived drainage features is examined for a study basin using DEM of increasing grid size. The result shows that watershed features derived from different reso...
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