| Title: | Effect of DEM data resolution on SWAT output uncertainty |
| Authors: | Chaubey, I., A.S. Cotter. T.A. Costello and T.S. Soerens |
| Year: | 2005 |
| Journal: | Hydrological Processes |
| Volume (Issue): | 19(3) |
| Pages: | 621-628 |
| Article ID: | |
| DOI: | 10.1002/hyp.5607 |
| URL (non-DOI journals): | |
| Model: | SWAT |
| Broad Application Category: | hydrologic and pollutant |
| Primary Application Category: | DEM data resolution effects |
| Secondary Application Category: | nutrient cycling/loss and transport |
| Watershed Description: | 18.9 km^2 Moores Creek, located in northwest Arkansas, U.S. |
| Calibration Summary: | |
| 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 |