Tool risk reduction measures


Sustainable urban drainage systems for collecting, diverting and retaining surface runoff water

Traditional surface water drainage systems are often overloaded in case of heavy rain and thus cause flooding and damages. They can be developed further to “sustainable urban drainage systems” aiming on increasing their capacity e.g. when it comes to heavy rainfall and aligning them with natural water processes. There is a large collection of structural measures that belongs to this group measures. Some of them are listed in this catalogue. The system elements have in common that they require regular cleaning and maintenance.

Fields of action
Settlement areas
Synergies may exist between heavy rain risk management measures and other development goals like environmental protection, health care, and economic performance. Harnessing them requires involvement of different actors, enforcement of exchange between you and them and holistic thinking.

Check out the RAINMAN good practice examples:

no good practice example available



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