Effects of Finer Scale Soil Survey and Land-Use Classification on SWAT Hydrological Modelling Accuracy in Data-Poor Study Areas

The limited availability of high-quality spatial data often limits the development hydrological modelling in developing countries. Hydrological models with at different scales may generate large uncertainties outputs. This study analysed accuracy four SWAT built that combine soil and land use/land cover (LULC) scale 1:250,000 1:100,000 a basin Mexico. model allowed determining large-scale maps produced better results than from small-scale. Sensitivity analysis was less LULC data. However, small-scale can be used for exploratory purposes when testing performance.