Computer Assisted Basin Delineation
DOI:
https://doi.org/10.3989/egeogr.1995.i219.239Keywords:
Digital Elevation Models, Spatially Distributed Hydrologic Modeling, Automated Terrain, Hydrology ClassificationAbstract
Computer Assisted Basin Delineation. This paper describes some results of using video technology as a framework for spatially distributed hydrologic modeling. The designed prototype allows the delineation of upland watersheds of user specified channel reaches.
The system operates on widely available hard copy contour maps, that are videodigitized and further processed to derive terrain slopes and aspects (the elevation model), and the location of a sizeable number of linked channel elements (the drainage network model). Once the sub-watersheds corresponding to the reaches of the channels are delineated, any of several available techniques may be used to accomplish the overland flow routing.
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