Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/203668 |
Resumo: | Large-scale hydrologic–hydrodynamic models are powerful tools for integrated water resources evaluation at the basin scale, especially in the context of flood hazard assessment. However, recent model developments have paid little attention to simulate reservoirs’ hydrodynamics within river networks. This study presents an adaptation of the MGB model to simulate reservoirs as an internal boundary condition, enabling the explicit simulation of hydrodynamic processes along reservoirs and their interaction with upstream and downstream floodplains in large basins. A case study is carried out in the Itajaí-Açu River Basin in Brazil, which has periodic flood-related disasters and three flood control dams. The model was calibrated for the 1950–2016 period forced with daily observed precipitation. The adjustment was satisfactory, with Nash–Sutcliffe metrics between 0.54 and 0.84 for the 11 gauges analyzed and with flood frequency curves also well represented. Simulation scenarios with and without floodplains and reservoirs were performed to evaluate the relative role of these factors on flood control basin-wide through evaluation of simulated discharges, water levels and flood extent. Itajaí do Oeste tributary and Itajaí-Açu mainstem present major floodplain attenuation, while in Itajaí do Sul and Itajaí do Norte tributaries the main flood control occurs due to reservoir attenuation. Downstream from the dams, results indicated that the reservoirs reach their maximum discharge reduction capacity for 5- to 10-year floods, decreasing it for larger floods. The developed model may be very useful for operational uses as flood forecasting and coordinated reservoir operation studies, as well as to enhance the comprehension of flood dynamics at basin scale. |
id |
UFRGS-2_631a5f6f35d27443df1762edbe0ea6b6 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/203668 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Fleischmann, Ayan SantosCollischonn, WalterPaiva, Rodrigo Cauduro Dias deTucci, Carlos Eduardo Morelli2019-12-24T03:59:29Z20191573-0840http://hdl.handle.net/10183/203668001106847Large-scale hydrologic–hydrodynamic models are powerful tools for integrated water resources evaluation at the basin scale, especially in the context of flood hazard assessment. However, recent model developments have paid little attention to simulate reservoirs’ hydrodynamics within river networks. This study presents an adaptation of the MGB model to simulate reservoirs as an internal boundary condition, enabling the explicit simulation of hydrodynamic processes along reservoirs and their interaction with upstream and downstream floodplains in large basins. A case study is carried out in the Itajaí-Açu River Basin in Brazil, which has periodic flood-related disasters and three flood control dams. The model was calibrated for the 1950–2016 period forced with daily observed precipitation. The adjustment was satisfactory, with Nash–Sutcliffe metrics between 0.54 and 0.84 for the 11 gauges analyzed and with flood frequency curves also well represented. Simulation scenarios with and without floodplains and reservoirs were performed to evaluate the relative role of these factors on flood control basin-wide through evaluation of simulated discharges, water levels and flood extent. Itajaí do Oeste tributary and Itajaí-Açu mainstem present major floodplain attenuation, while in Itajaí do Sul and Itajaí do Norte tributaries the main flood control occurs due to reservoir attenuation. Downstream from the dams, results indicated that the reservoirs reach their maximum discharge reduction capacity for 5- to 10-year floods, decreasing it for larger floods. The developed model may be very useful for operational uses as flood forecasting and coordinated reservoir operation studies, as well as to enhance the comprehension of flood dynamics at basin scale.application/pdfengNatural hazards. Switzerland. Vol. 99, n. 2 (Nov. 2019), p. 1075 - 1104Modelo MGB-IPHBacias hidrográficasReservatóriosInundaçõesModelos hidrodinâmicosItajaí-Açu, Rio (SC)ReservoirsFlood controlFlood plainsHydrodynamic modelingItajaí-Açu River BasinModeling the role of reservoirs versus floodplains on large-scale river hydrodynamicsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001106847.pdf.txt001106847.pdf.txtExtracted Texttext/plain77746http://www.lume.ufrgs.br/bitstream/10183/203668/2/001106847.pdf.txtc59af776a1a8246c0c6b0cea05cbe5d4MD52ORIGINAL001106847.pdfTexto completo (inglês)application/pdf5666214http://www.lume.ufrgs.br/bitstream/10183/203668/1/001106847.pdf3ef94e57f55aecf3262d504028fab03cMD5110183/2036682019-12-25 05:04:48.438612oai:www.lume.ufrgs.br:10183/203668Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2019-12-25T07:04:48Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics |
title |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics |
spellingShingle |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics Fleischmann, Ayan Santos Modelo MGB-IPH Bacias hidrográficas Reservatórios Inundações Modelos hidrodinâmicos Itajaí-Açu, Rio (SC) Reservoirs Flood control Flood plains Hydrodynamic modeling Itajaí-Açu River Basin |
title_short |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics |
title_full |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics |
title_fullStr |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics |
title_full_unstemmed |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics |
title_sort |
Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics |
author |
Fleischmann, Ayan Santos |
author_facet |
Fleischmann, Ayan Santos Collischonn, Walter Paiva, Rodrigo Cauduro Dias de Tucci, Carlos Eduardo Morelli |
author_role |
author |
author2 |
Collischonn, Walter Paiva, Rodrigo Cauduro Dias de Tucci, Carlos Eduardo Morelli |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Fleischmann, Ayan Santos Collischonn, Walter Paiva, Rodrigo Cauduro Dias de Tucci, Carlos Eduardo Morelli |
dc.subject.por.fl_str_mv |
Modelo MGB-IPH Bacias hidrográficas Reservatórios Inundações Modelos hidrodinâmicos Itajaí-Açu, Rio (SC) |
topic |
Modelo MGB-IPH Bacias hidrográficas Reservatórios Inundações Modelos hidrodinâmicos Itajaí-Açu, Rio (SC) Reservoirs Flood control Flood plains Hydrodynamic modeling Itajaí-Açu River Basin |
dc.subject.eng.fl_str_mv |
Reservoirs Flood control Flood plains Hydrodynamic modeling Itajaí-Açu River Basin |
description |
Large-scale hydrologic–hydrodynamic models are powerful tools for integrated water resources evaluation at the basin scale, especially in the context of flood hazard assessment. However, recent model developments have paid little attention to simulate reservoirs’ hydrodynamics within river networks. This study presents an adaptation of the MGB model to simulate reservoirs as an internal boundary condition, enabling the explicit simulation of hydrodynamic processes along reservoirs and their interaction with upstream and downstream floodplains in large basins. A case study is carried out in the Itajaí-Açu River Basin in Brazil, which has periodic flood-related disasters and three flood control dams. The model was calibrated for the 1950–2016 period forced with daily observed precipitation. The adjustment was satisfactory, with Nash–Sutcliffe metrics between 0.54 and 0.84 for the 11 gauges analyzed and with flood frequency curves also well represented. Simulation scenarios with and without floodplains and reservoirs were performed to evaluate the relative role of these factors on flood control basin-wide through evaluation of simulated discharges, water levels and flood extent. Itajaí do Oeste tributary and Itajaí-Açu mainstem present major floodplain attenuation, while in Itajaí do Sul and Itajaí do Norte tributaries the main flood control occurs due to reservoir attenuation. Downstream from the dams, results indicated that the reservoirs reach their maximum discharge reduction capacity for 5- to 10-year floods, decreasing it for larger floods. The developed model may be very useful for operational uses as flood forecasting and coordinated reservoir operation studies, as well as to enhance the comprehension of flood dynamics at basin scale. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-12-24T03:59:29Z |
dc.date.issued.fl_str_mv |
2019 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/203668 |
dc.identifier.issn.pt_BR.fl_str_mv |
1573-0840 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001106847 |
identifier_str_mv |
1573-0840 001106847 |
url |
http://hdl.handle.net/10183/203668 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Natural hazards. Switzerland. Vol. 99, n. 2 (Nov. 2019), p. 1075 - 1104 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/203668/2/001106847.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/203668/1/001106847.pdf |
bitstream.checksum.fl_str_mv |
c59af776a1a8246c0c6b0cea05cbe5d4 3ef94e57f55aecf3262d504028fab03c |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224980711604224 |