The world leader in self-securing flexible dams

Water-Gate is a flexible emergency flood dam that harnesses the power of floodwater to automatically fill, unfold and stabilise itself.

Water-Gate is also the latest generation of cofferdam; it simplifies river works, quickly and effectively combats pollution, and makes better use of natural water points for firefighting.

Water-Gate can be installed on any kind of terrain. It is inexpensive and protects the environment.

Flood protection water-gate principle

A revolutionary idea: using the power of water to stop flooding

The innovative concept behind Water-Gate, the first flexible dam/cofferdam, makes use of fluid dynamics.
The dam is designed with a 1:4 height-width ratio, which ensures total stability and grip on all types of surfaces, even ice!

flood protection 1 to 4 ratio

Benefits and added value of the Water-Gate dam/cofferdam

Unparalleled versatility: a real Swiss army knife when it comes to liquid retention – floods, cofferdams, land pollution, river pollution, fire defence

Guaranteed return on investment!

The Water-Gate dam is the most cost-effective solution on the market. Here’s why:

  • Affordable purchase price
  • Unbeatable transportation costs
  • Unbeatable storage cost
  • Unbeatable installation costs
  • Water-Gate does not require any other equipment
  • Water-Gate does not require any specific layout
  • Water-Gate can help you reduce your insurance costs
  • Water-Gate complements and optimises existing flood defences
  • Water-Gate can be reused for many years
  • Water-Gate generally pays for itself after 1 use

A roll the size of a sports bag can retain thousands of m3 of water with incredible efficiency.

flood protection in roll

Already used across the world to combat pollution and flooding

Water-Gate has been protecting civilian and military infrastructure for over 15 years.
Here are some examples

Val d’Or | Quebec

House undergoing flooding

Woodborough | England

Street flooding

Tokyo Airport | Japan

Torrential rain on the tarmac

Rotorua | New Zealand

Residential neighbourhood

Fortuna Dam | Panama

Adding extra height to a hydroelectric dam

Bischwiller | France

Logistics depot

Water-Gate guarantees 100% protection
Judge for yourself

Our leadership is based on innovation and the exceptional quality of our products from the point of view of safety, efficacy and performance: made-to-measure support for our clients.


Our goal is to be the world’s leading manufacturer of anti-flood and anti-pollution protection.

Our standards are high. We define excellence and we honour our commitments.

Water-Gate dams/cofferdams are certified by FM Global, a world leader in the field of damage insurance.


Certification from FM Approvals signifies that the products have been impartially tested and conform to the most stringent international standards.

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They count on us

Flood protection, cofferdams, anti-pollution devices, fire defence: check out some of our major clients!