Fifty-Fifty

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Flood Area Protection

"Flood Area Protection" evicts retention areas for flood events near rivers to attenuate floods and to reduce damages. This measure succeeds and is closely related to the measure Analysis of Retention Potentials in Urban Areas.




Flood Area Protection in Dresden, Germany. (Source: Dresden)


Download flyer of evaluated practice example (Dresden):


flood-area-protection_eval-prac_dresden.pdf

Internet links:


  • www.dresden.de (information on flood area protection in Dresden, Germany; in german only)
  • www.umweltbundesamt.de/rup/hochwasserschutz.html (in german only)
  • www.riverlinks.org (an INTERREG IIIC project of six European river cities)

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    Short description of measure

    Problem to be solved: Minimisation of the effects of flood events

    Goal, potential objective: Saving and improvement of the natural run-off in creeks and rivers; reduction of damages of high-valued properties in endangered areas

    Developmental steps: Classification of high-risk flood areas; protection of areas by law together with prohibition of new buildings

    Instruments, implementation mechanism: Computation of run-off models; edict of protection law by the water authority; revitalisation of natural systems to retain water slow down the run-off (like river banks, natural barrier system of plants); deconstruction of buildings in the creeks, rivers and water edges

    Area of implementation: Local, urban; provincial for legal foundations

    Responsibilities: Lower water authority

    Time horizon: Medium term

    Economic aspects: Minimise maintenance costs through protection and support of natural surfaces

    Promoters, obstacles, risks: Resistance of concerned landowners and agricultural enterprises

    Side effects: Avoid expensive containment options; enforcing of laws pertaining to water and waterways

    Bridge to mitigation: Saving and development of CO2 sinks within natural systems in protected areas

     

     

    River Elbe in Dresden. (Source: Dresden)

     

    Flood protection area during flooding. (Source: Dresden)

     

    Building in flood protection area. (Source: Dresden)