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

Fujita, Thais ; de Morais, Marcos Vinicius Bueno ; Dos Santos, Vanessa Cristina ; Rudke, Anderson Paulo ; de Eiras, Marilia Moreira ; Xavier, Ana Carolina Freitas ; Rafee, Sameh Adib Abou LU ; Santos, Eliane Barbosa ; Martins, Leila Droprinchinski LU and Uvo, Cintia Bertacchi LU orcid , et al. (2022) In Water 14(3).
Abstract

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... (More)

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.

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publishing date
type
Contribution to journal
publication status
published
subject
keywords
Flow duration curve, Hydrological modeling, Ivaí River Basin, SWAT-CUP
in
Water
volume
14
issue
3
article number
488
publisher
MDPI AG
external identifiers
  • scopus:85124361812
ISSN
2073-4441
DOI
10.3390/w14030488
language
English
LU publication?
yes
additional info
Funding Information: Funding: This research was funded by Coordination for the Improvement of Higher Education Personnel (CAPES Coordenação de Aperfeiçoamento de Pessoal de Nível Superior), Process nº 88887.115875/2015-01 and CAPES PROEX 0344/2021, and by National Council for Scientific and Technological Development (CNPq—Conselho Nacional de Desenvolvimento Científico e Tecnológico) Process nº 140033/2020-3. Funding Information: This research was funded by Coordination for the Improvement of Higher Education Personnel (CAPES Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior), Process n? 88887.115875/2015-01 and CAPES PROEX 0344/2021, and by National Council for Scientific and Technological Development (CNPq?Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico) Process n? 140033/2020-3. The authors would like to gratefully acknowledge the Brazilian National Water Agency (ANA) for providing the precipitation and streamflow data. Also thank Jos? Alberto Fernandez Monteiro for his comments and discussion which helped improving the quality of the manuscript. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
id
4e50b919-3215-48b5-a179-52e2f2f9bc0e
date added to LUP
2022-02-21 17:37:47
date last changed
2024-03-21 05:48:48
@article{4e50b919-3215-48b5-a179-52e2f2f9bc0e,
  abstract     = {{<p>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.</p>}},
  author       = {{Fujita, Thais and de Morais, Marcos Vinicius Bueno and Dos Santos, Vanessa Cristina and Rudke, Anderson Paulo and de Eiras, Marilia Moreira and Xavier, Ana Carolina Freitas and Rafee, Sameh Adib Abou and Santos, Eliane Barbosa and Martins, Leila Droprinchinski and Uvo, Cintia Bertacchi and de Souza, Rodrigo Augusto Ferreira and de Freitas, Edmilson Dias and Martins, Jorge Alberto}},
  issn         = {{2073-4441}},
  keywords     = {{Flow duration curve; Hydrological modeling; Ivaí River Basin; SWAT-CUP}},
  language     = {{eng}},
  month        = {{02}},
  number       = {{3}},
  publisher    = {{MDPI AG}},
  series       = {{Water}},
  title        = {{Simulating Discharge in a Non-Dammed River of Southeastern South America Using SWAT Model}},
  url          = {{http://dx.doi.org/10.3390/w14030488}},
  doi          = {{10.3390/w14030488}},
  volume       = {{14}},
  year         = {{2022}},
}