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Water barrier of insufficient height

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Flood hazard

An increased flood hazard because the flood defence does not meet the requirements and/or due to extreme conditions.

The water barrier along the old and new port of Bunschoten-Spakenburg is not of sufficient height. Because the historic center has to be preserved, no large water barrier can be placed. Because of large storms, water can rise very quickly from the surrounding lakes, which leaves little time to erect a barrier.


Flexible water barrier Spakenburg

The flexible water barrier Spakenburg exists out of a dug in basin that is 65 cm wide, in which a barrier of 30 cm wide stands. The barrier is made out of carbon fiber reinforced with optical fiber, filled with PIR and polyurethane. If the water level rises, the basin fills up which makes the barrier float upwards.

Flexibele waterkering Spakenburg


  • Labour extensive
  • Not visible when not in operation


  1. Topic Water safety
  2. Development state 6: System/subsystem model or prototype demonstration in a relevant environment
  3. Setting type Urban area
  4. Water type Surface water
  5. Project period 0-3 months

Submitted innovation Award

Water Innovation Award