Precision and accuracy of streamflow measurements in headwater streams during baseflow

Detalhes bibliográficos
Autor(a) principal: Santos,Camyla Innocente dos
Data de Publicação: 2021
Outros Autores: Chaffe,Pedro Luiz Borges, Perez,Alondra Beatriz Alvarez, Arienti,Pedro Ferreira, Sá,João Henrique Macedo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: RBRH (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100207
Resumo: ABSTRACT The quantification of baseflow is key for water resources management. However, there are few reports on the precision and accuracy in low streamflow measurements. In this paper, we systematically analyze the precision and accuracy of dilution streamflow measurements in headwater channels during baseflow. Precision refers to the variability of the values for repeated measurements and accuracy is how much the measured value approximates the reference one. We measured streamflow in 31 different cross-sections with contributing areas ranging from 0.02 to 5.33 km2. Streamflow measurements with the current meter were adopted as reference for accuracy estimation. A precision error of ±5.0% was found for the measurements. The percent errors compared to reference streamflow ranged from 0.7 to 45.6%, with a median of 6.1%. Precision and accuracy are in the same order of magnitude found in the literature for larger streams. These results can be used for constraining the uncertainty of streamflow measurements and rainfall-runoff modeling of headwater streams.
id ABRH-1_faee274f196caa07fb755a36915446d9
oai_identifier_str oai:scielo:S2318-03312021000100207
network_acronym_str ABRH-1
network_name_str RBRH (Online)
repository_id_str
spelling Precision and accuracy of streamflow measurements in headwater streams during baseflowHydrometryDilution methodBaseflowHeadwater streamsABSTRACT The quantification of baseflow is key for water resources management. However, there are few reports on the precision and accuracy in low streamflow measurements. In this paper, we systematically analyze the precision and accuracy of dilution streamflow measurements in headwater channels during baseflow. Precision refers to the variability of the values for repeated measurements and accuracy is how much the measured value approximates the reference one. We measured streamflow in 31 different cross-sections with contributing areas ranging from 0.02 to 5.33 km2. Streamflow measurements with the current meter were adopted as reference for accuracy estimation. A precision error of ±5.0% was found for the measurements. The percent errors compared to reference streamflow ranged from 0.7 to 45.6%, with a median of 6.1%. Precision and accuracy are in the same order of magnitude found in the literature for larger streams. These results can be used for constraining the uncertainty of streamflow measurements and rainfall-runoff modeling of headwater streams.Associação Brasileira de Recursos Hídricos2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100207RBRH v.26 2021reponame:RBRH (Online)instname:Associação Brasileira de Recursos Hídricos (ABRH)instacron:ABRH10.1590/2318-0331.262120200135info:eu-repo/semantics/openAccessSantos,Camyla Innocente dosChaffe,Pedro Luiz BorgesPerez,Alondra Beatriz AlvarezArienti,Pedro FerreiraSá,João Henrique Macedoeng2021-04-20T00:00:00Zoai:scielo:S2318-03312021000100207Revistahttps://www.scielo.br/j/rbrh/https://old.scielo.br/oai/scielo-oai.php||rbrh@abrh.org.br2318-03311414-381Xopendoar:2021-04-20T00:00RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH)false
dc.title.none.fl_str_mv Precision and accuracy of streamflow measurements in headwater streams during baseflow
title Precision and accuracy of streamflow measurements in headwater streams during baseflow
spellingShingle Precision and accuracy of streamflow measurements in headwater streams during baseflow
Santos,Camyla Innocente dos
Hydrometry
Dilution method
Baseflow
Headwater streams
title_short Precision and accuracy of streamflow measurements in headwater streams during baseflow
title_full Precision and accuracy of streamflow measurements in headwater streams during baseflow
title_fullStr Precision and accuracy of streamflow measurements in headwater streams during baseflow
title_full_unstemmed Precision and accuracy of streamflow measurements in headwater streams during baseflow
title_sort Precision and accuracy of streamflow measurements in headwater streams during baseflow
author Santos,Camyla Innocente dos
author_facet Santos,Camyla Innocente dos
Chaffe,Pedro Luiz Borges
Perez,Alondra Beatriz Alvarez
Arienti,Pedro Ferreira
Sá,João Henrique Macedo
author_role author
author2 Chaffe,Pedro Luiz Borges
Perez,Alondra Beatriz Alvarez
Arienti,Pedro Ferreira
Sá,João Henrique Macedo
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Santos,Camyla Innocente dos
Chaffe,Pedro Luiz Borges
Perez,Alondra Beatriz Alvarez
Arienti,Pedro Ferreira
Sá,João Henrique Macedo
dc.subject.por.fl_str_mv Hydrometry
Dilution method
Baseflow
Headwater streams
topic Hydrometry
Dilution method
Baseflow
Headwater streams
description ABSTRACT The quantification of baseflow is key for water resources management. However, there are few reports on the precision and accuracy in low streamflow measurements. In this paper, we systematically analyze the precision and accuracy of dilution streamflow measurements in headwater channels during baseflow. Precision refers to the variability of the values for repeated measurements and accuracy is how much the measured value approximates the reference one. We measured streamflow in 31 different cross-sections with contributing areas ranging from 0.02 to 5.33 km2. Streamflow measurements with the current meter were adopted as reference for accuracy estimation. A precision error of ±5.0% was found for the measurements. The percent errors compared to reference streamflow ranged from 0.7 to 45.6%, with a median of 6.1%. Precision and accuracy are in the same order of magnitude found in the literature for larger streams. These results can be used for constraining the uncertainty of streamflow measurements and rainfall-runoff modeling of headwater streams.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv 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://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100207
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100207
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2318-0331.262120200135
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Recursos Hídricos
publisher.none.fl_str_mv Associação Brasileira de Recursos Hídricos
dc.source.none.fl_str_mv RBRH v.26 2021
reponame:RBRH (Online)
instname:Associação Brasileira de Recursos Hídricos (ABRH)
instacron:ABRH
instname_str Associação Brasileira de Recursos Hídricos (ABRH)
instacron_str ABRH
institution ABRH
reponame_str RBRH (Online)
collection RBRH (Online)
repository.name.fl_str_mv RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH)
repository.mail.fl_str_mv ||rbrh@abrh.org.br
_version_ 1754734702255669248