| Title: | Impact of DEM mesh size and soil map scale on SWAT runoff, sediment, and NO3-N loads predictions |
| Authors: | Chaplot, V. |
| Year: | 2005 |
| Journal: | Journal of Hydrology |
| Volume (Issue): | 312(1-4) |
| Pages: | 207-222 |
| Article ID: | |
| DOI: | 10.1016/j.jhydrol.2005.02.017 |
| URL (non-DOI journals): | |
| Model: | SWAT |
| Broad Application Category: | hydrologic and pollutant |
| Primary Application Category: | DEM data resolution effects |
| Secondary Application Category: | soil data resolution effects |
| Watershed Description: | 21.83 km^2 Lower Walnut Creek, located in central Iowa, U.S. |
| Calibration Summary: | |
| Validation Summary: | MD, MAD, RMSD, P statistics reported |
| General Comments: | DEMs ranged from 20 to 500 m resolution; soil data from 1:25,000 to 1:500,000. DME mesh sizes > 50 m dhad only small effects on flow, but did result in errors for estimated nitrate & sediment loads. A detailed soil map is needed, regardless of DEM size, to accurately estimate loads. |
| Language: | English |
| Keywords: | Hydrologic modeling; SWAT; Spatial input data; DEM; Soil map |