Articles | Volume 25, issue 12
Research article
02 Dec 2021
Research article |  | 02 Dec 2021

Enhanced flood hazard assessment beyond decadal climate cycles based on centennial historical data (Duero basin, Spain)

Gerardo Benito, Olegario Castillo, Juan A. Ballesteros-Cánovas, Maria Machado, and Mariano Barriendos

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Cited articles

Aires, C., Pereira, D. I., and Azevedo, T. M.: Inundações do rio Douro: dados históricos e hidrológicos, I Jornadas do Quarternário da APEQ, Porto, available at: (last access: 26 November 2021)​​​​​​​, 2000. 
Alcoforado, M. J., Silva, L. P., Amorim, I., Fragoso, M., and Garcia, J. C.: Historical floods of the Douro River in Porto, Portugal (1727–1799), Climatic Change, 165, 17,, 2021. 
Aldrete, G. S.: Floods of the Tiber in ancient Rome, Johns Hopkins University Press, Baltimore, 338 pp., 2007. 
Álvarez-Vázquez, J. A.: Drought and rainy periods in the province of Zamora in the 17th, 18th, and 19th centuries, in: Quaternary climate in Western Mediterranean, edited by: Lopez-Vera, F., Universidad Autónoma de Madrid, Madrid, Spain, 221–235, 1986. 
Short summary
Climate change is expected to increase the intensity of floods, but changes are difficult to project. We compiled historical and modern flood data of the Rio Duero (Spain) to evaluate flood hazards beyond decadal climate cycles. Historical floods were obtained from documentary sources, identifying 69 floods over 1250–1871 CE. Discharges were calculated from reported flood heights. Flood frequency using historical datasets showed the most robust results, guiding climate change adaptation.