Flood probability reduction measures

Examples of good integration of SUDS into urban planning, Dresden, Germany


The Flood Probability Reduction Measures (FPRM) encompass those measures which:

  • restore the retention potential of the natural hydrological system or even
  • enhance the detention of rain water through small retention basins distributed in `small urban catchments`(SUCA’s).

Such measures have to be treated in an integrated manner and not be planned in an way that would cause increase in flood risk downstream. Only in this way, would the sustainability of flood risk management practice be in line with the requirements of the new EU legislation which postulates a catchment-based approach.

A list of FPRM types and their description can be seen here.


Some of the FPRM include hydraulic structures in SUCA’s. Thus naming them as ‘non-structural’ may be inconsistent and contradictory. But in the context of flood risk management, structural should be taken to mean the ‘conventional’ flood defence strategy (such as increasing the flow capacity of the storm water network or building entraining walls) and thus the flood probability measures (FPRM) are in this sense non-structural as they represent an alternative and lower scale approach compared with conventional structural approaches. This is an alternative definition to that given from the Scottish studies above [*1] and widens the scope of NSM.

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Flood probability reduction measures






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