| Autor: |
A.D. Lima, Barbosa Jhs, Leonardo Campos de Assis, Fernandes Alt |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
International Journal of Hydrology. 3:442-449 |
| ISSN: |
2576-4454 |
| Popis: |
The spatial discretization of a watershed can directly influence the derived outputs of hydrological models Conclusive guidelines regarding the proper level of spatial discretization have not yet been established due to the great diversity of models calibrated parameters and topographic and geospatial characteristics of study areas The objective of this study was to investigate the influence of different levels of watershed spatial discretization and sub basins on the HEC HMS model rsquo s performance considering the Environmental Protection Area APA of the Uberaba River Basin region The SCS CN method was applied to the different levels of spatial discretization for two distinctive periods calibration and validation and its performance was evaluated according to seven goodness of fit measures MAE RMSE RSR NSE PBIAS R and KGE The results obtained from a qualitative and quantitative perspective based on the visual analysis of the simulated hydrographs and the obtained goodness of fit values indicate the HEC HMS model represents the hydrological processes of the basin under investigation efficiently regardless of the level of spatial discretization The results suggest the subdivision of a watershed does not result in improvement of the HEC HMS model rsquo s performance without significant differences in physiographic characteristics slope land use and types of soil Considering its good performance for the study area it is suggested the application of the HEC HMS model for future works that aim to investigate the drainage capacity of the APA of the Uberaba River |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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