Precision and accuracy of streamflow measurements in headwater streams during baseflow
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
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. |
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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 |