Simulating Discharge in a Non-Dammed River of Southeastern South America Using SWAT Model

Water

Sameh Adib Abou Rafee¹  Marcos Vinicius Bueno de Morais¹  Thais Fujita¹  Edmilson Dias de Freitas¹  Cintia Bertacchi Uvo²  Leila Droprinchinski Martins³  Jorge Alberto Martins³  Marilia Moreira de Eiras³  Ana Carolina Freitas Xavier³  Anderson Paulo Rudke³  Vanessa Cristina Dos Santos⁴  Eliane Barbosa Santos⁵  Rodrigo Augusto Ferreira de Souza⁶ 

[1] Department of Atmospheric Sciences, University of São Paulo, São Paulo 05508-090, Brazil;Division of Water Resources Engineering, Lund University, Box 118, SE-221 00 Lund, Sweden;Graduate Program in Environmental Engineering, Federal University of Technology—Paraná, Londrina 86036-370, Brazil;Laboratoire Ecologie Fonctionnelle et Environnement (UMR 5245 CNRS—UT3—INPT), 31326 Castanet Tolosan, France;Meteorology Laboratory, State University of North Fluminense, Macaé 27925-535, Brazil;Superior School of Technology, State University of Amazonas, Manaus 69065-020, Brazil;

关键词: hydrological modeling;    SWAT-CUP;    flow duration curve;    Ivaí River Basin;   

DOI  :  10.3390/w14030488

来源: DOAJ

【 摘 要 】

Within a single region, it is possible to identify opposite changes in flow production. This proved to be the case for several basins in southeastern South America. It remains challenging to the causes this behavior and whether changes in streamflow will continue at current levels or decline in the coming decades. In this study, we used the Soil Water Assessment Tool to simulate monthly river discharge in the Ivaí River Basin, an unregulated medium-sized catchment and tributary of the Upper Paraná River Basin. After calibration, the simulated flow regime for the five streamflow stations based on the Nash-Sutcliffe Efficiency index (NSE) rated four of the streamflow stations Very Good (NSE between 0.86 and 0.89) and only one in the Good index (0.70). The overall flow behavior was well represented, although an underestimation was identified in four monitoring stations. Through assessment of its functionality and limitations in terms of specific flow duration curves percentages, the calibrated model could provide (to managers) the reliability needed for a realistic intervention. The results of this study may assist managers and support public policies for the use of water resources at the Ivaí River basin.

【 授权许可】

Unknown