Tool risk reduction measures

100 RISK REDUCTION MEASURES

Please note:

This catalogue contains 100 measures that can contribute to the mitigation of heavy rain risks. These measures are very diverse: they range from structural to non-structural measures and from small, easy-to-implement solutions to comprehensive conceptual approaches.

The catalogue was compiled from existing catalogues from all RAINMAN partner countries as well as from knowledge and experiences made in the project without claiming universal coverage and without having expert knowledge in each of the covered business areas. Sources for further information and good practice examples are provided for a large number of the included measures.

Use the selection feature to find measures that are applicable in the field of action that you are dealing with or search for key words you are looking for.

Please consider that heavy rain risk reduction measures work best, when they are strategically applied and cleverly combined under consideration of the local conditions. Go back to RISK REDUCTION MEASURES for further guidance.

Infiltrating trenches/cells ; tree trenches-image
Infiltrating trenches/cells ; tree trenches main image

Infiltrating trenches/cells ; tree trenches

  • Description
  • Fields of action
  • Synergies
  • Good practice examples
  • References

Infiltration cells/trenches and gravel drains (with an overlying swale, as deep bed or tree planting pit) reduce runoff rates and volumes by retention/detention and therefore can help replenish groundwater and preserve base flow in rivers. They treat runoff by filtration through the substrate in the trench and subsequently through soil. They are effective at removing pollutants and sediment through physical filtration, adsorption onto the material in the trench, or biochemical reactions in the fill or soil. Near trenches pavements can be built, or places of recreation and sport activities.

Fields of action Settlement areas
Additionally to flood risk reduction by slowing and storing surface runoff, these measures have medium or high possible benefits for the following biophysical impacts and ecosystem services: Reduce erosion and/or sediment delivery; Filtration of pollutants; Increase evapotranspiration; Increase soil water retention; Intercept pollution pathways; Create terrestrial habitats; Absorb and/or retain CO2; Climate change adaptation and mitigation; Groundwater/aquifer recharge

Check out the RAINMAN good practice examples:

no good practice example available

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Sabine Scharfe, Saxon State Office for Environment, Agriculture and Geology