Precipitation Management

"Precipitation Management" aims at an adequate treatment of rainfalls in plans for new building areas and new streets.

Typical Examples of Rainwater Management. (Source: Dresden)

Download flyer of evaluated practice example (Dresden):


Internet links:

  • (Wissenswertes und Praktisches rund um das Thema Regenwasser; in german only)
  • (decision support system for rainwater management; EU project "DayWater")

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    Short description of measure

    Problem to be solved: Flooding, drought

    Goal, potential objective: Keep direct run-off of extreme precipitation away from land development and roads; stabilisation of water balance; minimise hydraulic stress in creeks and rivers

    Developmental steps: Detect the natural water balance; development of a concept to reduce invasion and to compensate risks; edict the rules as legal foundation in the plan

    Instruments, implementation mechanism: Regulation of development plans; careful planning of roads in storm-prone areas; use of precipitation-run-off models

    Area of implementation: Local, urban

    Responsibilities: Local administration (planning office) together with environmental office

    Time horizon: Short to medium term

    Economic aspects: Avoidance of expensive additional measures of further adaptation; expensive care of the decentral plants

    Promoters, obstacles, risks: More space required; insufficient care of the plants

    Side effects: Improvement of bio-climate nearby decentral plants

    Bridge to mitigation: Use green areas to build up CO2 sinks