Hydrologically correct DEMs(Hc-DEM) is one of DEMs which correctly and sufficiently represents genesis and locational relationship between hydrologic parameters,including direction and pathway of overland runoff,stream networks,and boundary of watershed,and landform,etc.As the only way to extract terrain parameters based on DEMs for the studies of watershed hydrology,and soil erosion modeling of regional scale,therefore it is necessary to constructing Hc-DEMs for representing terrain shape,extracting terrai...
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