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 |