Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain)
Study region: The Tagus-Segura aqueduct (TSA) is a large and strategic water transfer scheme in Spain that connects Entrepeñas and Buendía reservoirs in the Tagus river headwaters to the Segura river basin, a highly stressed Mediterranean area. Study focus: The operating rules of the TSA underwent s...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823000265 |
| _version_ | 1827987252386463744 |
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| author | Carlotta Valerio Matteo Giuliani Andrea Castelletti Alberto Garrido Lucia De Stefano |
| author_facet | Carlotta Valerio Matteo Giuliani Andrea Castelletti Alberto Garrido Lucia De Stefano |
| author_sort | Carlotta Valerio |
| collection | DOAJ |
| description | Study region: The Tagus-Segura aqueduct (TSA) is a large and strategic water transfer scheme in Spain that connects Entrepeñas and Buendía reservoirs in the Tagus river headwaters to the Segura river basin, a highly stressed Mediterranean area. Study focus: The operating rules of the TSA underwent several modifications over the years, and the debate about which are the optimal parameters to meet the interests of the parties involved is still open. We employed Evolutionary Multi-Objective Direct Policy Search to jointly optimize the re-operation of the headwaters dams and the water transfer policy with respect to four conflicting objectives: Tagus and Segura water demands, hydropower production and socioeconomic benefit of the population living on the shores of the headwaters reservoirs. We tested the optimization under the baseline and the 2027 scenario, which foresees an increased environmental flow (EF) in the Tagus river. New hydrological insights for the region: The proposed operating rule presents optimized control parameters, a higher degree of freedom and a transferred volume that cyclically varies according to the hydrological stage of the year. In the 2027 scenario, despite the increased EF, the deficit in the aqueduct shows a limited increase compared to the historical solution (+10%), while the storage deficit is strongly reduced (−73%). This benefits the population living on the reservoirs shores and also ensures more stability to the aqueduct functioning. |
| first_indexed | 2024-04-09T23:43:59Z |
| format | Article |
| id | doaj.art-a4635fc89f864767b807ccd07f5e7bab |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-04-09T23:43:59Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-a4635fc89f864767b807ccd07f5e7bab2023-03-18T04:41:15ZengElsevierJournal of Hydrology: Regional Studies2214-58182023-04-0146101339Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain)Carlotta Valerio0Matteo Giuliani1Andrea Castelletti2Alberto Garrido3Lucia De Stefano4School of Geological Sciences, Complutense University of Madrid, Calle José Antonio Nováis 12, 28040 Madrid, Spain; Water Observatory, Botín Foundation, Calle de Castelló 18, 28001 Madrid, Spain; Corresponding author at: School of Geological Sciences, Complutense University of Madrid, Calle José Antonio Nováis 12, 28040 Madrid, Spain.Department of Electronics, Information, and Bioengineering, Politecnico di Milano, P.za Leonardo da Vinci, 32, 20133 Milan, ItalyDepartment of Electronics, Information, and Bioengineering, Politecnico di Milano, P.za Leonardo da Vinci, 32, 20133 Milan, ItalyWater Observatory, Botín Foundation, Calle de Castelló 18, 28001 Madrid, Spain; CEIGRAM, Technical University of Madrid, Paseo Senda del Rey 13, 28040 Madrid, SpainSchool of Geological Sciences, Complutense University of Madrid, Calle José Antonio Nováis 12, 28040 Madrid, Spain; Water Observatory, Botín Foundation, Calle de Castelló 18, 28001 Madrid, SpainStudy region: The Tagus-Segura aqueduct (TSA) is a large and strategic water transfer scheme in Spain that connects Entrepeñas and Buendía reservoirs in the Tagus river headwaters to the Segura river basin, a highly stressed Mediterranean area. Study focus: The operating rules of the TSA underwent several modifications over the years, and the debate about which are the optimal parameters to meet the interests of the parties involved is still open. We employed Evolutionary Multi-Objective Direct Policy Search to jointly optimize the re-operation of the headwaters dams and the water transfer policy with respect to four conflicting objectives: Tagus and Segura water demands, hydropower production and socioeconomic benefit of the population living on the shores of the headwaters reservoirs. We tested the optimization under the baseline and the 2027 scenario, which foresees an increased environmental flow (EF) in the Tagus river. New hydrological insights for the region: The proposed operating rule presents optimized control parameters, a higher degree of freedom and a transferred volume that cyclically varies according to the hydrological stage of the year. In the 2027 scenario, despite the increased EF, the deficit in the aqueduct shows a limited increase compared to the historical solution (+10%), while the storage deficit is strongly reduced (−73%). This benefits the population living on the reservoirs shores and also ensures more stability to the aqueduct functioning.http://www.sciencedirect.com/science/article/pii/S2214581823000265Interbasin water transferTagus-Segura aqueductMulti-objective evolutionary optimizationDirect policy searchEnvironmental flow |
| spellingShingle | Carlotta Valerio Matteo Giuliani Andrea Castelletti Alberto Garrido Lucia De Stefano Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain) Journal of Hydrology: Regional Studies Interbasin water transfer Tagus-Segura aqueduct Multi-objective evolutionary optimization Direct policy search Environmental flow |
| title | Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain) |
| title_full | Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain) |
| title_fullStr | Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain) |
| title_full_unstemmed | Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain) |
| title_short | Multi-objective optimal design of interbasin water transfers: The Tagus-Segura aqueduct (Spain) |
| title_sort | multi objective optimal design of interbasin water transfers the tagus segura aqueduct spain |
| topic | Interbasin water transfer Tagus-Segura aqueduct Multi-objective evolutionary optimization Direct policy search Environmental flow |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823000265 |
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