SWAT Literature Database for Peer-Reviewed Journal Articles

Title:
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Effect of DEM data resolution on SWAT output uncertainty 
Authors:
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Chaubey, I., A.S. Cotter. T.A. Costello, and T.S. Soerens 
Year:2005 
Journal:Hydrological Processes 
Volume:19(3) 
Pages:621-628 
Article ID: 
DOI:10.1002/hyp.5607 
URL (non-DOI journals): 
Model:SWAT 
Broad Application Category:hydrologic & pollutant 
Primary Application Category:DEM effects 
Secondary Application Category:pollutant cycling/loss and transport 
Watershed Description:
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1890 ha Moores Creek located in northwest Arkansas, U.S. 
Calibration Summary:
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Validation Summary:Relative errors reported as a function of DEM resolution for 1997-2000. 
General Comments:SWAT was calibrated on an annual basis for flow, nitrate, and total P. DEM resolution affects the watershed delineation, stream network, and subbasin classification. The minimum DEM resolution ranged from 100 to 200 m to achieve <10% error in SWAT output for flow, nitrate, and total P predictions. The authors state that the choice of DEM size is a function of the watershed of interest. 
Language:English 
Keywords:SWAT; DEM data resolution; output uncertainty