Hydrological effects of large dams in Chilean rivers
tudy region: Eight rivers regulated by large dams located in three hydro-climatic zones along the Chilean latitudinal gradient. Study focus: We performed a multi-temporal scale analysis of flow records and we used data from official gauging stations to characterise the non-altered and the altered ri...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat de Lleida (UdL) |
| Repositorio: | Repositori Obert UdL |
| OAI Identifier: | oai:repositori.udl.cat:10459.1/83277 |
| Acceso en línea: | https://doi.org/10.1016/j.ejrh.2022.101060 http://hdl.handle.net/10459.1/83277 |
| Access Level: | acceso abierto |
| Palabra clave: | Dam Hydrological alteration Fluvial regime Latitudinal gradient Chile Hidrologia Fluvià |
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Hydrological effects of large dams in Chilean riversVillablanca, LuisaBatalla, Ramon J.Piqué, GemmaIroumé, AndrésDamHydrological alterationFluvial regimeLatitudinal gradientChileHidrologiaFluviàtudy region: Eight rivers regulated by large dams located in three hydro-climatic zones along the Chilean latitudinal gradient. Study focus: We performed a multi-temporal scale analysis of flow records and we used data from official gauging stations to characterise the non-altered and the altered river regimes to determine the magnitude and persistence of the hydrological alteration downstream from large dams in Chile. These analyses provide relevant information to improve the understanding of such alterations, and a conceptual basis for assessing future impacts as the country plans to build a series of large dams in the coming years. New hydrological insights for the region: The mean annual runoff was reduced in all the study rivers. The monthly flows of the rivers from the northern arid zone were the most affected by the dams. The magnitude and frequency of floods decreased in all the study rivers. Moreover, northern drier river systems did not recover their hydrological conditions in the distance downstream of the dams, probably due to transmission losses and water extractions and diversions; in contrast, southern rivers partially recovered their flow regimes with distance downstream, mainly due to the inflows from permanent non-regulated tributaries. So far, this is the first study in Chile that comprehensively analyses the hydrological effects of large dams.Elsevier2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1016/j.ejrh.2022.101060http://hdl.handle.net/10459.1/83277reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a https://doi.org/10.1016/j.ejrh.2022.101060Journal of Hydrology: Regional Studies, 2022, vol. 41, núm. 101060, p. 1-18cc-by-nc-nd (c) Villablanca et al., 2022info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/832772026-06-24T12:42:17Z |
| dc.title.none.fl_str_mv |
Hydrological effects of large dams in Chilean rivers |
| title |
Hydrological effects of large dams in Chilean rivers |
| spellingShingle |
Hydrological effects of large dams in Chilean rivers Villablanca, Luisa Dam Hydrological alteration Fluvial regime Latitudinal gradient Chile Hidrologia Fluvià |
| title_short |
Hydrological effects of large dams in Chilean rivers |
| title_full |
Hydrological effects of large dams in Chilean rivers |
| title_fullStr |
Hydrological effects of large dams in Chilean rivers |
| title_full_unstemmed |
Hydrological effects of large dams in Chilean rivers |
| title_sort |
Hydrological effects of large dams in Chilean rivers |
| dc.creator.none.fl_str_mv |
Villablanca, Luisa Batalla, Ramon J. Piqué, Gemma Iroumé, Andrés |
| author |
Villablanca, Luisa |
| author_facet |
Villablanca, Luisa Batalla, Ramon J. Piqué, Gemma Iroumé, Andrés |
| author_role |
author |
| author2 |
Batalla, Ramon J. Piqué, Gemma Iroumé, Andrés |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Dam Hydrological alteration Fluvial regime Latitudinal gradient Chile Hidrologia Fluvià |
| topic |
Dam Hydrological alteration Fluvial regime Latitudinal gradient Chile Hidrologia Fluvià |
| description |
tudy region: Eight rivers regulated by large dams located in three hydro-climatic zones along the Chilean latitudinal gradient. Study focus: We performed a multi-temporal scale analysis of flow records and we used data from official gauging stations to characterise the non-altered and the altered river regimes to determine the magnitude and persistence of the hydrological alteration downstream from large dams in Chile. These analyses provide relevant information to improve the understanding of such alterations, and a conceptual basis for assessing future impacts as the country plans to build a series of large dams in the coming years. New hydrological insights for the region: The mean annual runoff was reduced in all the study rivers. The monthly flows of the rivers from the northern arid zone were the most affected by the dams. The magnitude and frequency of floods decreased in all the study rivers. Moreover, northern drier river systems did not recover their hydrological conditions in the distance downstream of the dams, probably due to transmission losses and water extractions and diversions; in contrast, southern rivers partially recovered their flow regimes with distance downstream, mainly due to the inflows from permanent non-regulated tributaries. So far, this is the first study in Chile that comprehensively analyses the hydrological effects of large dams. |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2022 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
| dc.identifier.none.fl_str_mv |
https://doi.org/10.1016/j.ejrh.2022.101060 http://hdl.handle.net/10459.1/83277 |
| url |
https://doi.org/10.1016/j.ejrh.2022.101060 http://hdl.handle.net/10459.1/83277 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Reproducció del document publicat a https://doi.org/10.1016/j.ejrh.2022.101060 Journal of Hydrology: Regional Studies, 2022, vol. 41, núm. 101060, p. 1-18 |
| dc.rights.none.fl_str_mv |
cc-by-nc-nd (c) Villablanca et al., 2022 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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cc-by-nc-nd (c) Villablanca et al., 2022 http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Elsevier |
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Elsevier |
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reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL) |
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Universitat de Lleida (UdL) |
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Repositori Obert UdL |
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Repositori Obert UdL |
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