A new methodology to assess the benefits of flood warning

T. Ball, A. Black, R. Ellis, L. Hemsley, F. Hollebrandse, P. Lardet, J. Wicks

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    A new assessment methodology is presented for the benefits of flood warning that applies both tangible and intangible benefits from warning generation and dissemination using a multi-criteria analysis (MCA). The resulting decision support tool allows benefits to be scored transparently, reinforced by Geographical Information System (GIS) procedures. A wide range of benefits are scored including: protection of key infrastructure, avoided social impacts, timely operation of flood defences and avoided risks to life from the flood hazard. Pilot testing on some 22 sites at a variety of scales (catchments and flood warning areas) showed that the method works effectively when making 'like for like' comparisons, considering a wholly new system for large catchments, or upgrades to warning and dissemination systems in sub-catchment flood warning areas. The methodology promotes consultation and data interchange between the warning organisation and end-users in order to prioritise particular areas of need for new or improved systems.

    Original languageEnglish
    Pages (from-to)188-202
    Number of pages15
    JournalJournal of Flood Risk Management
    Issue number3
    Publication statusPublished - Sep 2012

    Cite this

    Ball, T., Black, A., Ellis, R., Hemsley, L., Hollebrandse, F., Lardet, P., & Wicks, J. (2012). A new methodology to assess the benefits of flood warning. Journal of Flood Risk Management, 5(3), 188-202. https://doi.org/10.1111/j.1753-318X.2012.01141.x