Performance assessment of two semi-distributed and lumped hydrological models in the Peruvian Andes

Dávila V.O.R.; Larico A.J.M.; Medina G.F.M.; Tapia Á.M.F.; Quispe D.I.Y.; Vilca L.N.C.; Coaguila V.R.H.; Medina S.A.Z. · International Journal of Hydrology Science and Technology (2024) · DOI: 10.1504/ijhst.2024.138797

Resumen

The high demand for water resources in the Peruvian Andes requires simple and available tools for decision-making. In our study, the lumped Témez model and soil and water assessment tool (SWAT) model were used in the El Pañe Basin. The performance of both the models was reasonably good. The SWAT model showed less uncertainty, whereas the Témez model showed a better percent bias. Using the Penman-Monteith actual evapotranspiration model from SWAT, the evapotranspiration/precipitation ratio showed an increase in variability in the last decade and a decreasing trend during drought periods. The soil water content was well-represented by the normalised difference vegetation index and the land surface temperature index owing to the high correlations between them. The Témez model was appropriate for studying limited data of the El Pañe Basin, while the SWAT model allowed more detailed studies. Both the models were found to be useful tools for water management.

Instituciones: Universidad Nacional de San Agustín de Arequipa