Component: Geocellular systems

SuDS Component Geocellular Storage Systems



Geocellular systems can be used to control and manage rainwater surface water runoff either as a soakaway or as a storage tank. The modular/honeycomb nature of geocellular systems means that they can be tailored to suit the specific requirements of any site.


Advantages & disadvantages 




  • Modular and flexible

  • Dual usage (i.e. infiltration and/or storage)

  • High void ratios (up to 96%) providing high storage volume capacity

  • Lightweight, easy to install and robust

  • Capable of managing high flow events

  • Can be installed beneath trafficked or non-trafficked areas (providing structural performance is proven to be sufficient)

  • Long-term physical and chemical stability

  • Can be installed beneath public open spaces , e.g. play areas.     

  • No water quality treatment or amenity provision

  • Performance can be difficult to monitor

  • Can be difficult to maintain                                                                      

Where component can be used    

Residential: Yes
High density: Yes
Retrofit: Yes
Contaminated sites: Yes
Sites above vulnerable groundwater: Yes



Peak flow reduction: Good
Volume reduction: Poor (storage only)
Volume reduction: Good (with infiltration)
Water quality treatment: Poor
Amenity potential: Poor
Ecology potential: Poor


Regular inspection of silt traps, manholes, pipework and pre-treatment devices, with removal of sediment and debris as required.


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