Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)

[EN] Dams, weirs and transverse barriers to rivers interrupt sediment continuity and reduce sediment supply downstream. In this regard, dam removal is an increasingly used river restoration measure to recover longitudinal connectivity of sediment, among many other river processes. In this work we pr...

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Autores: Ibisate, A., García García, Jesús Horacio, Vázquez Tarrío, Daniel, Sánchez Pinto, Iban, Herrero Otero, Xabier, Sáenz de Olazagoitia, A., Ollero, Alfredo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/383351
Acceso en línea:http://hdl.handle.net/10261/383351
https://api.elsevier.com/content/abstract/scopus_id/85210634688
Access Level:acceso abierto
Palabra clave:Sediment connectivity
Bedload transport
Gravel-bed river
RFID tracking
River restoration
País Vasco
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
title Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
spellingShingle Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
Ibisate, A.
Sediment connectivity
Bedload transport
Gravel-bed river
RFID tracking
River restoration
País Vasco
title_short Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
title_full Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
title_fullStr Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
title_full_unstemmed Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
title_sort Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)
dc.creator.none.fl_str_mv Ibisate, A.
García García, Jesús Horacio
Vázquez Tarrío, Daniel
Sánchez Pinto, Iban
Herrero Otero, Xabier
Sáenz de Olazagoitia, A.
Ollero, Alfredo
author Ibisate, A.
author_facet Ibisate, A.
García García, Jesús Horacio
Vázquez Tarrío, Daniel
Sánchez Pinto, Iban
Herrero Otero, Xabier
Sáenz de Olazagoitia, A.
Ollero, Alfredo
author_role author
author2 García García, Jesús Horacio
Vázquez Tarrío, Daniel
Sánchez Pinto, Iban
Herrero Otero, Xabier
Sáenz de Olazagoitia, A.
Ollero, Alfredo
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Diputación Foral de Guipúzcoa
Ministerio de Ciencia, Innovación y Universidades (España)
Ministerio para la Transición Ecológica y el Reto Demográfico (España)
Consejo Superior de Investigaciones Científicas (España)
Agencia Estatal de Investigación (España)
Vázquez Tarrio, Daniel [0000-0002-5658-4426]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Sediment connectivity
Bedload transport
Gravel-bed river
RFID tracking
River restoration
País Vasco
topic Sediment connectivity
Bedload transport
Gravel-bed river
RFID tracking
River restoration
País Vasco
description [EN] Dams, weirs and transverse barriers to rivers interrupt sediment continuity and reduce sediment supply downstream. In this regard, dam removal is an increasingly used river restoration measure to recover longitudinal connectivity of sediment, among many other river processes. In this work we present a 6-year (from 2016 to 2022) monitoring of bedload transport before, during and after the removal of the 7-meters high Olloki dam in the Leitzaran River (Basque Country). The removal process started in 2018 with the upper 3 m and was completed in 2019 with the remaining 4 m of the dam. To monitor bedload transport, we seeded RFID-tagged stones in three reaches: a control reach unaffected by the dam, a reach immediately upstream of the dam, and a reach downstream of the dam. We deployed 300 tagged stones each year (100 by reach), i.e., 1800 in total. We measured important mobilization and displacement of tracer stones (with maximum travel distances of ∼8.8 km of tracers seeded upstream the Olloki dam) during an active hydrological year following the complete removal of the dam, with some tagged particles even travelling across a downstream weir. We also reported changes in the progression of tagged stones in the dam-affected reaches (upstream and downstream) with the removal, with further and faster dispersal of sediments once the dam was removed. In addition, in these reaches we estimated larger volumes of mobilized bedload in the three years following removal than in the previous years, especially in the upstream reach. In this regard, the relationship between bedload and cumulated energy suggests that less energy was expended in the upstream reach for mobilizing bedload once the removal of the dam was completed. Conversely, in the control reach no major changes were observed before and after the removal of the dam; this reach showed only an increase in sediment mobilization during the last hydrological year, which was the most hydrologically active of the whole monitoring period. In summary, our tracer observations document that travel distances and mobilization volumes are considerably increased with dam removal, especially once the dam was completely removed.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/383351
https://api.elsevier.com/content/abstract/scopus_id/85210634688
url http://hdl.handle.net/10261/383351
https://api.elsevier.com/content/abstract/scopus_id/85210634688
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI//PID2022-138196OB-C32
info:eu-repo/grantAgreement///20233TE012
https://doi.org/10.1016/j.geomorph.2024.109542
Sí
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eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling Bedload response to dam removal: Results from a 6-year particle tracking survey in the Leitzaran River (Basque Country)Ibisate, A.García García, Jesús HoracioVázquez Tarrío, DanielSánchez Pinto, IbanHerrero Otero, XabierSáenz de Olazagoitia, A.Ollero, AlfredoSediment connectivityBedload transportGravel-bed riverRFID trackingRiver restorationPaís Vasco[EN] Dams, weirs and transverse barriers to rivers interrupt sediment continuity and reduce sediment supply downstream. In this regard, dam removal is an increasingly used river restoration measure to recover longitudinal connectivity of sediment, among many other river processes. In this work we present a 6-year (from 2016 to 2022) monitoring of bedload transport before, during and after the removal of the 7-meters high Olloki dam in the Leitzaran River (Basque Country). The removal process started in 2018 with the upper 3 m and was completed in 2019 with the remaining 4 m of the dam. To monitor bedload transport, we seeded RFID-tagged stones in three reaches: a control reach unaffected by the dam, a reach immediately upstream of the dam, and a reach downstream of the dam. We deployed 300 tagged stones each year (100 by reach), i.e., 1800 in total. We measured important mobilization and displacement of tracer stones (with maximum travel distances of ∼8.8 km of tracers seeded upstream the Olloki dam) during an active hydrological year following the complete removal of the dam, with some tagged particles even travelling across a downstream weir. We also reported changes in the progression of tagged stones in the dam-affected reaches (upstream and downstream) with the removal, with further and faster dispersal of sediments once the dam was removed. In addition, in these reaches we estimated larger volumes of mobilized bedload in the three years following removal than in the previous years, especially in the upstream reach. In this regard, the relationship between bedload and cumulated energy suggests that less energy was expended in the upstream reach for mobilizing bedload once the removal of the dam was completed. Conversely, in the control reach no major changes were observed before and after the removal of the dam; this reach showed only an increase in sediment mobilization during the last hydrological year, which was the most hydrologically active of the whole monitoring period. In summary, our tracer observations document that travel distances and mobilization volumes are considerably increased with dam removal, especially once the dam was completely removed.Removal of Olloki dam and the geomorphological monitoring in which were funded by the IREKIBAI Life Project and the Gipuzkoa Provincial Council (2016-2020), we want to thank Patxi Tamés, Iñaki Bañares, Iñigo Mendiola and Aitor Lekuona for their support. We also want to acknowledge all the people that participated in the field searching of tracers, a hard work without which these results would not be possible: Josu Ortiz Martínez de Lahidalga, Jon Beltrán de Lubiano, Mathieu Rambaud, Diego Berger, Eritz Campos, Mattéo Mingotaud, Maxence Paris, David Varela, Coni Neira. The work was funded by the Spanish Ministry of Science, Innovation and Universities - State Research Agency (AEI) /Project PID2022-138196OB-C32. State Program for Research, Development and Innovation focused on the Challenges of Society. The work by one of the authors (D. Vázquez-Tarrío) was supported by the 2023-2026 grant signed between the Spanish Directorate General for Water (DGA-MITERD; Government of Spain) and the Spanish National Research Council (CSIC-Ministry of Science, Innovation and Universities), which includes action “Sedimentary Morphodynamics” (20233TE012: IGME-CSIC; Tarquín 2 Project).Peer reviewedElsevierDiputación Foral de GuipúzcoaMinisterio de Ciencia, Innovación y Universidades (España)Ministerio para la Transición Ecológica y el Reto Demográfico (España)Consejo Superior de Investigaciones Científicas (España)Agencia Estatal de Investigación (España)Vázquez Tarrio, Daniel [0000-0002-5658-4426]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/383351https://api.elsevier.com/content/abstract/scopus_id/85210634688reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI//PID2022-138196OB-C32info:eu-repo/grantAgreement///20233TE012https://doi.org/10.1016/j.geomorph.2024.109542Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3833512026-05-22T06:33:51Z
score 15,81155

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