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- W2284420693 abstract "Filling 'sinks' in DEMs is commonly done as the first step in deriving hydrologic features fromdigital elevation data. The assumptions (implicit and explicit) in this practice are that sinks areerrors in the data and that these elevation errors are negative (elevations are all low). This isnot an accurate assumption and it leads to misrepresentation of the landscape and watershedcharacteristics. A random selection of DEMs from Virginia were used to characterize the natureand occurrence of sinks and to evaluate the potential for using a simple 3x3 mean filter toimprove the delineation of the flow network. Two metrics show promise as objective indicatorsof conditions when smoothing is beneficial for reducing effects of errors on derived flownetworks and affiliated watershed boundaries." @default.
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- W2284420693 date "2001-01-01" @default.
- W2284420693 modified "2023-09-26" @default.
- W2284420693 title "Reducing Effects Of DEM Error In GIS Hydrologic Functions" @default.
- W2284420693 doi "https://doi.org/10.13031/2013.7393" @default.
- W2284420693 hasPublicationYear "2001" @default.
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