Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Jéssica Assaid Martins
Data de Publicação: 2021
Outros Autores: Viola, Marcelo Ribeiro, Mello, Carlos Rogério de, Morais, Marco Antônio Vieira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/50006
Resumo: The Brazilian Cerrado biome is the largest and richest tropical savanna in the world and is among the 25 biodiversity hotspots identified worldwide. However, the lack of adequate hydrological monitoring in this region has led to problems in the management of water resources. In order to provide tools for the adequate management of water resources in the Brazilian Cerrado biome region, this paper develops the regionalization of maximum, mean and minimum streamflows in the Tocantins River Basin (287,405.5 km2), fully located in the Brazilian Cerrado biome. The streamflow records of 32 gauging stations in the Tocantins River Basin are examined using the Mann-Kendall test and the hydrological homogeneity non-parametric index-flood method. One homogeneous region was identified for the estimate of the streamflows Qltm (long-term mean streamflow), Q90% (streamflow with 90% of exceeding time), Q95% (streamflow with 95% of exceeding time) and Q7,10 (minimum annual streamflow over 7 days and return period of 10 years). Two homogeneous regions were identified for maximum annual streamflow estimation and the Generalized Extreme Value distribution is found to describe the distribution of maximus events appropriately within the both regions. Regional models were developed for each streamflow of each region and evaluated by cross-validation. These models can be used for the estimation of maximum, mean and minimum streamflows in ungauged basins within the Tocantins River Basin within the area boundaries identified. Therefore, the results provided in this paper are valuable tools for practicing water-resource managers in the Brazilian Cerrado biome.
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spelling Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biomeRegionalização hidrológica de vazões para a bacia do rio Tocantins no bioma Cerrado brasileiroL-Moments methodStatistical hydrologyWater use rights concessionsConcessões de direitos de uso de águaHidrologia estatísticaThe Brazilian Cerrado biome is the largest and richest tropical savanna in the world and is among the 25 biodiversity hotspots identified worldwide. However, the lack of adequate hydrological monitoring in this region has led to problems in the management of water resources. In order to provide tools for the adequate management of water resources in the Brazilian Cerrado biome region, this paper develops the regionalization of maximum, mean and minimum streamflows in the Tocantins River Basin (287,405.5 km2), fully located in the Brazilian Cerrado biome. The streamflow records of 32 gauging stations in the Tocantins River Basin are examined using the Mann-Kendall test and the hydrological homogeneity non-parametric index-flood method. One homogeneous region was identified for the estimate of the streamflows Qltm (long-term mean streamflow), Q90% (streamflow with 90% of exceeding time), Q95% (streamflow with 95% of exceeding time) and Q7,10 (minimum annual streamflow over 7 days and return period of 10 years). Two homogeneous regions were identified for maximum annual streamflow estimation and the Generalized Extreme Value distribution is found to describe the distribution of maximus events appropriately within the both regions. Regional models were developed for each streamflow of each region and evaluated by cross-validation. These models can be used for the estimation of maximum, mean and minimum streamflows in ungauged basins within the Tocantins River Basin within the area boundaries identified. Therefore, the results provided in this paper are valuable tools for practicing water-resource managers in the Brazilian Cerrado biome.O bioma Cerrado brasileiro é a maior e mais rica savana tropical do mundo e está entre os 25 hotspots de biodiversidade identificados em todo o mundo. No entanto, o escasso monitoramento hidrológico, recorrente nesta região, tem gerado problemas na gestão dos recursos hídricos. A fim de fornecer ferramentas para a gestão adequada dos recursos hídricos na região do bioma Cerrado brasileiro, este trabalho desenvolve a regionalização das vazões máximas, médias e mínimas na bacia do rio Tocantins (287.405,5 km2 ), totalmente localizada no bioma Cerrado brasileiro. Os registros de vazão de 32 estações fluviométricas na bacia do rio Tocantins foram examinados usando o teste de Mann-Kendall e o método não paramétrico de homogeneidade hidrológica index-flood. Uma região homogênea foi identificada para a estimativa das vazões Qltm (vazão média de longo termo), Q90% (vazão igualada ou excedida em 90% do tempo), Q95% (vazão igualada ou excedida em 95% do tempo) e Q7,10 (vazão mínima anual das médias de 7 dias e tempo de retorno de 10 anos). Duas regiões homogêneas foram identificadas para a estimativa da vazão máxima anual e a distribuição de valor extremo generalizado foi encontrada para descrever a distribuição de eventos máximos apropriadamente dentro de ambas as regiões. Modelos regionais foram desenvolvidos para cada vazão de cada região e avaliados pela validação cruzada. Esses modelos podem ser usados para a estimativa de vazões máximas, médias e mínimas em bacias não medidas dentro da bacia do rio Tocantins, dentro dos limites de área identificados. Portanto, os resultados fornecidos neste artigo são ferramentas valiosas para a prática de gestores de recursos hídricos no bioma Cerrado brasileiro.2022-05-24T21:07:38Z2022-05-24T21:07:38Z2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfRODRIGUES, J. A. M. Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome. Revista Ambiente e Água, Taubaté, v. 16, n. 6, 2021.http://repositorio.ufla.br/jspui/handle/1/50006Revista Ambiente e Águareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessRodrigues, Jéssica Assaid MartinsViola, Marcelo RibeiroMello, Carlos Rogério deMorais, Marco Antônio Vieiraeng2023-05-03T11:45:36Zoai:localhost:1/50006Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-03T11:45:36Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
Regionalização hidrológica de vazões para a bacia do rio Tocantins no bioma Cerrado brasileiro
title Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
spellingShingle Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
Rodrigues, Jéssica Assaid Martins
L-Moments method
Statistical hydrology
Water use rights concessions
Concessões de direitos de uso de água
Hidrologia estatística
title_short Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
title_full Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
title_fullStr Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
title_full_unstemmed Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
title_sort Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome
author Rodrigues, Jéssica Assaid Martins
author_facet Rodrigues, Jéssica Assaid Martins
Viola, Marcelo Ribeiro
Mello, Carlos Rogério de
Morais, Marco Antônio Vieira
author_role author
author2 Viola, Marcelo Ribeiro
Mello, Carlos Rogério de
Morais, Marco Antônio Vieira
author2_role author
author
author
dc.contributor.author.fl_str_mv Rodrigues, Jéssica Assaid Martins
Viola, Marcelo Ribeiro
Mello, Carlos Rogério de
Morais, Marco Antônio Vieira
dc.subject.por.fl_str_mv L-Moments method
Statistical hydrology
Water use rights concessions
Concessões de direitos de uso de água
Hidrologia estatística
topic L-Moments method
Statistical hydrology
Water use rights concessions
Concessões de direitos de uso de água
Hidrologia estatística
description The Brazilian Cerrado biome is the largest and richest tropical savanna in the world and is among the 25 biodiversity hotspots identified worldwide. However, the lack of adequate hydrological monitoring in this region has led to problems in the management of water resources. In order to provide tools for the adequate management of water resources in the Brazilian Cerrado biome region, this paper develops the regionalization of maximum, mean and minimum streamflows in the Tocantins River Basin (287,405.5 km2), fully located in the Brazilian Cerrado biome. The streamflow records of 32 gauging stations in the Tocantins River Basin are examined using the Mann-Kendall test and the hydrological homogeneity non-parametric index-flood method. One homogeneous region was identified for the estimate of the streamflows Qltm (long-term mean streamflow), Q90% (streamflow with 90% of exceeding time), Q95% (streamflow with 95% of exceeding time) and Q7,10 (minimum annual streamflow over 7 days and return period of 10 years). Two homogeneous regions were identified for maximum annual streamflow estimation and the Generalized Extreme Value distribution is found to describe the distribution of maximus events appropriately within the both regions. Regional models were developed for each streamflow of each region and evaluated by cross-validation. These models can be used for the estimation of maximum, mean and minimum streamflows in ungauged basins within the Tocantins River Basin within the area boundaries identified. Therefore, the results provided in this paper are valuable tools for practicing water-resource managers in the Brazilian Cerrado biome.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022-05-24T21:07:38Z
2022-05-24T21:07:38Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv RODRIGUES, J. A. M. Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome. Revista Ambiente e Água, Taubaté, v. 16, n. 6, 2021.
http://repositorio.ufla.br/jspui/handle/1/50006
identifier_str_mv RODRIGUES, J. A. M. Hydrological regionalization of streamflows for the Tocantins River Basin in Brazilian Cerrado biome. Revista Ambiente e Água, Taubaté, v. 16, n. 6, 2021.
url http://repositorio.ufla.br/jspui/handle/1/50006
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Revista Ambiente e Água
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
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