Automated Extraction of Watershed Characteristics Based on Archydro Tools: A Case Study of Fujiang Watershed
Fujiang river basin has been selected as the study area, and drainage basin characteristics been exacted and analyzed from "burn-in" DEM at two scales (1:50000 and 1:250000) with the Arc Hydro Tools, The selected parameters include those commonly use in hydrology and geomorphology such as drainage network, area and channel length.According to the different resolution of differences between the sections of the river terrain slope and standard deviation of terrain have been compared and analyzed.Two results show that 1) for different resolutions, the derived drainage network have some different on flat area or the disturbance of human activities area, but the accuracy is meet the requirement;2)from the efficiency and the accuracy, drainage basin characteristics exacted by using the Arc Hydro Tools is feasible.
Arc Hydro ToolsDigital Elevation Model(DEM)automated extractionwatershed characteristicslopestandard deviation of terrain
NETL
NSTL
万方数据
维普
