Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds

Detalhes bibliográficos
Autor(a) principal: Silva, César de Oliveira Ferreira [UNESP]
Data de Publicação: 2020
Outros Autores: Manzione, Rodrigo Lilla [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.33958/revig.v41i2.678
http://hdl.handle.net/11449/206813
Resumo: The scarcity of information to support decision-making in water resources management is one of the main restrictions to the adequate use of such resources. Flow regionalization, which aims to overcome the lack of measured flow rate data by using hydrological information from other watersheds with similar physical characteristics, has vital importance. The State of São Paulo uses a flow regionalization method that was formulated with data from the 1940s to the 1980s in order to manage water use concession proposals in regions with no historical fluviometric data. The present study assessed the efficiency of this flow regionalization method by checking it against monthly mean flow rate values obtained for five watersheds of the “Middle Paranapanema” Water Resources Management Unit (UGRHI 17), which in turn composes the “Middle Paranapanema” Basin Committee (CBH-MP). The goodness of fit of the flow duration curves derived from flow regionalization data was analyzed, considering: (1) whether this kind of flow duration curves provide enough information for decision making, and (2) what impacts can be generated by the use of such flow regionalization method. The analyses were made for three time frames, using data obtained before and after 1990, and using the complete historical series. This procedure enabled to depict the shortcomings of the flow regionalization model built with outdated data. The underestimation of data was proven by goodness-of-fit tests that yielded the worst results for the smaller watersheds. On the other hand, the flow duration curves yielded better goodness of fit for mean flow rate values obtained before 1990. The main source of uncertainty in maintaining the use of this methodology is its outdated in face of climate change scenarios. When it comes to water use concessions, more restrictive scenarios than the real ones result the use of such flow regionalization model; when it comes to the planning of civil engineering works, the predictability of extreme events, such as floods, is underrated. The methodology can generate impacts on water security (with more restrictive concessions and underrated predictability of floods) and obstacles to sustainability of water use in the watersheds. Advances in the study of flow regionalization, as well as the expansion of hydrometric networks, can broaden the bases for decision making in water resource management in Basin Committees.
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spelling Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watershedsRevisitando a regionalizaÇÃo de vazÕes na regiÃo do mÉdio paranapanema no estado de SÃo Paulo: UtilizaÇÃo de curvas de permanÊncia em microbacias hidrogrÁficasFlow duration curveHistorical seriesHydrologyModelingWater availabilityThe scarcity of information to support decision-making in water resources management is one of the main restrictions to the adequate use of such resources. Flow regionalization, which aims to overcome the lack of measured flow rate data by using hydrological information from other watersheds with similar physical characteristics, has vital importance. The State of São Paulo uses a flow regionalization method that was formulated with data from the 1940s to the 1980s in order to manage water use concession proposals in regions with no historical fluviometric data. The present study assessed the efficiency of this flow regionalization method by checking it against monthly mean flow rate values obtained for five watersheds of the “Middle Paranapanema” Water Resources Management Unit (UGRHI 17), which in turn composes the “Middle Paranapanema” Basin Committee (CBH-MP). The goodness of fit of the flow duration curves derived from flow regionalization data was analyzed, considering: (1) whether this kind of flow duration curves provide enough information for decision making, and (2) what impacts can be generated by the use of such flow regionalization method. The analyses were made for three time frames, using data obtained before and after 1990, and using the complete historical series. This procedure enabled to depict the shortcomings of the flow regionalization model built with outdated data. The underestimation of data was proven by goodness-of-fit tests that yielded the worst results for the smaller watersheds. On the other hand, the flow duration curves yielded better goodness of fit for mean flow rate values obtained before 1990. The main source of uncertainty in maintaining the use of this methodology is its outdated in face of climate change scenarios. When it comes to water use concessions, more restrictive scenarios than the real ones result the use of such flow regionalization model; when it comes to the planning of civil engineering works, the predictability of extreme events, such as floods, is underrated. The methodology can generate impacts on water security (with more restrictive concessions and underrated predictability of floods) and obstacles to sustainability of water use in the watersheds. Advances in the study of flow regionalization, as well as the expansion of hydrometric networks, can broaden the bases for decision making in water resource management in Basin Committees.Departamento de Engenharia Rural Faculdade de Ciências Agronômicas Universidade Estadual Paulista (UNESP) Campus de Botucatu, Avenida Universitária, n° 3780, Altos do ParaísoDepartamento de Engenharia de Biossistemas Faculdade de Ciências e Engenharia de Tupã Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Domingos da Costa Lopes, 780, Jardim ItaipuDepartamento de Engenharia Rural Faculdade de Ciências Agronômicas Universidade Estadual Paulista (UNESP) Campus de Botucatu, Avenida Universitária, n° 3780, Altos do ParaísoDepartamento de Engenharia de Biossistemas Faculdade de Ciências e Engenharia de Tupã Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Domingos da Costa Lopes, 780, Jardim ItaipuUniversidade Estadual Paulista (Unesp)Silva, César de Oliveira Ferreira [UNESP]Manzione, Rodrigo Lilla [UNESP]2021-06-25T10:44:15Z2021-06-25T10:44:15Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-13http://dx.doi.org/10.33958/revig.v41i2.678Revista do Instituto Geologico, v. 41, n. 2, p. 1-13, 2020.2176-18920100-929Xhttp://hdl.handle.net/11449/20681310.33958/revig.v41i2.6782-s2.0-85095854594Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista do Instituto Geologicoinfo:eu-repo/semantics/openAccess2024-04-30T14:00:34Zoai:repositorio.unesp.br:11449/206813Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-30T14:00:34Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
Revisitando a regionalizaÇÃo de vazÕes na regiÃo do mÉdio paranapanema no estado de SÃo Paulo: UtilizaÇÃo de curvas de permanÊncia em microbacias hidrogrÁficas
title Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
spellingShingle Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
Silva, César de Oliveira Ferreira [UNESP]
Flow duration curve
Historical series
Hydrology
Modeling
Water availability
title_short Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
title_full Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
title_fullStr Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
title_full_unstemmed Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
title_sort Revisiting flow regionalization in the middle paranapanema region in the state of SÃo Paulo: The use of flow duration curves in watersheds
author Silva, César de Oliveira Ferreira [UNESP]
author_facet Silva, César de Oliveira Ferreira [UNESP]
Manzione, Rodrigo Lilla [UNESP]
author_role author
author2 Manzione, Rodrigo Lilla [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Silva, César de Oliveira Ferreira [UNESP]
Manzione, Rodrigo Lilla [UNESP]
dc.subject.por.fl_str_mv Flow duration curve
Historical series
Hydrology
Modeling
Water availability
topic Flow duration curve
Historical series
Hydrology
Modeling
Water availability
description The scarcity of information to support decision-making in water resources management is one of the main restrictions to the adequate use of such resources. Flow regionalization, which aims to overcome the lack of measured flow rate data by using hydrological information from other watersheds with similar physical characteristics, has vital importance. The State of São Paulo uses a flow regionalization method that was formulated with data from the 1940s to the 1980s in order to manage water use concession proposals in regions with no historical fluviometric data. The present study assessed the efficiency of this flow regionalization method by checking it against monthly mean flow rate values obtained for five watersheds of the “Middle Paranapanema” Water Resources Management Unit (UGRHI 17), which in turn composes the “Middle Paranapanema” Basin Committee (CBH-MP). The goodness of fit of the flow duration curves derived from flow regionalization data was analyzed, considering: (1) whether this kind of flow duration curves provide enough information for decision making, and (2) what impacts can be generated by the use of such flow regionalization method. The analyses were made for three time frames, using data obtained before and after 1990, and using the complete historical series. This procedure enabled to depict the shortcomings of the flow regionalization model built with outdated data. The underestimation of data was proven by goodness-of-fit tests that yielded the worst results for the smaller watersheds. On the other hand, the flow duration curves yielded better goodness of fit for mean flow rate values obtained before 1990. The main source of uncertainty in maintaining the use of this methodology is its outdated in face of climate change scenarios. When it comes to water use concessions, more restrictive scenarios than the real ones result the use of such flow regionalization model; when it comes to the planning of civil engineering works, the predictability of extreme events, such as floods, is underrated. The methodology can generate impacts on water security (with more restrictive concessions and underrated predictability of floods) and obstacles to sustainability of water use in the watersheds. Advances in the study of flow regionalization, as well as the expansion of hydrometric networks, can broaden the bases for decision making in water resource management in Basin Committees.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
2021-06-25T10:44:15Z
2021-06-25T10:44:15Z
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 http://dx.doi.org/10.33958/revig.v41i2.678
Revista do Instituto Geologico, v. 41, n. 2, p. 1-13, 2020.
2176-1892
0100-929X
http://hdl.handle.net/11449/206813
10.33958/revig.v41i2.678
2-s2.0-85095854594
url http://dx.doi.org/10.33958/revig.v41i2.678
http://hdl.handle.net/11449/206813
identifier_str_mv Revista do Instituto Geologico, v. 41, n. 2, p. 1-13, 2020.
2176-1892
0100-929X
10.33958/revig.v41i2.678
2-s2.0-85095854594
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Revista do Instituto Geologico
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1-13
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
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repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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