Dimensioning of storage reservoirs

We enable comprehensive calculations of the necessary volume of storage reservoirs. According to the German guideline DWA-A 117, the calculations are performed for large catchments (catchments with an area of over 200 ha or a flow time over 15 min). The calculations illustrate certain properties of the storage reservoir whose selection affects the effectiveness of rainwater systems.



  • securing sewage systems or sewage treatment plants against hydraulic overload
  • avoiding outflows from rainwater canals
  • avoiding the flooding of urban areas



  • Towns, cities and Municipalities
  • Water supply
  • Road and Greenery Management Authorities
  • Industry
  • Retail chains
  • Design offices
  • Property developers
  • Contractors
  • Transport
  • Hotels and gastronomy
  • Education and health service
  • Roads and car parks