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Flood Risk and Exposure: The Case of the Tajuña Valley (Madrid, Spain)

Author

Listed:
  • María Eugenia Pérez-González

    (Department of Geography, Universidad Complutense of Madrid, 28040 Madrid, Spain)

  • José María García-Alvarado

    (Department of Geography, Universidad Complutense of Madrid, 28040 Madrid, Spain)

  • María del Pilar García-Rodríguez

    (Department of Geography, Universidad Complutense of Madrid, 28040 Madrid, Spain)

  • Marta Blanco-González

    (Consultores en Biología de la Conservación S.L. C/Manuela Malasaña, 24, 28004 Madrid, Spain)

Abstract

This paper aims to update the exposure to flood risk in a catchment area of the Community of Madrid (Spain) linked to primary sector activities, albeit affected by the urban expansion of the capital. This research starts with the updating of the flood inventory, encompassing episodes documented between 1629 and 2020. The inadequate occupation of the territory means that floods continue to cause significant damage nowadays. It is worth highlighting the two recent floods (2019) that occurred just 15 days apart and caused serious damage to several towns in the basin. The areas at risk of flooding are obtained from the National Floodplain Mapping System, and the maximum and minimum floodable volume in the sector of the Tajuña River basin with the highest exposure to flooding has been calculated. The Sentinel 2 image in false colour (RGB bands 11-2-3, 11-8-3 and 12-11-8) and its transformation to colour properties (Intensity, Hue and Saturation) has made it possible to determine the extension of the riparian vegetation and the irrigated crops located in the alluvial plain. The SPOT 6 image with higher spatial resolution has allowed us to update the mapping of buildings located in areas at risk of flooding. Finally, based on cadastral data, a detailed cartography of built-up areas in areas at risk of flooding is provided. They affect buildings built mainly between the 1960s and 1990s, although the most recent buildings are built on agricultural land in the alluvial plain, even though current regulations prevent the occupation of these lands.

Suggested Citation

  • María Eugenia Pérez-González & José María García-Alvarado & María del Pilar García-Rodríguez & Marta Blanco-González, 2022. "Flood Risk and Exposure: The Case of the Tajuña Valley (Madrid, Spain)," Sustainability, MDPI, vol. 14(9), pages 1-17, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:9:p:5406-:d:806334
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    References listed on IDEAS

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    1. Francesco Faccini & Fabio Luino & Guido Paliaga & Anna Roccati & Laura Turconi, 2021. "Flash Flood Events along the West Mediterranean Coasts: Inundations of Urbanized Areas Conditioned by Anthropic Impacts," Land, MDPI, vol. 10(6), pages 1-32, June.
    2. Vicent Esteban Chapapría & José Serra Peris, 2021. "Vulnerability of Coastal Areas Due to Infrastructure: The Case of Valencia Port (Spain)," Land, MDPI, vol. 10(12), pages 1-15, December.
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