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

Water-Gate © technology: for what purpose?

Our range consists of more than 50 standards that are the subject of permanent innovation and many customized products.

Flooding
Les barrages souples autobloquants Water-Gate© protègent une maison à 360° contre la montée des eaux
Cofferdams
Canalisation d'une rivière grâce à un batardeau souple autobloquant water-gate.
Retention
Barrages souples autobloquants Water-Gate© pour la rétention d'urgence contre les pollutions liquides
Rivers
Barrage Water-Gate© de rétention pollution en rivière avec déversoir et trous de relâche

Revolutionary : self-securing flexible dams that harness the power of floodwater

  • Water rushes into the dam and slams the bottom canvas against the ground
  • Archimedes’ thrust lifts the upper retention canvas
  • The friction forces contain the hydrostatic thrust: AUTOSTABLE device, without anchoring.
flood protection 1 to 4 ratio

Amazingly simple

Lay down the dam and unroll it. It’s as easy as that!
Water rushes into the dam and holds it in place against the ground.

Lightning-fast installation

It only takes 5 minutes to install 200 m of protection! WaterGate comes in ready-to-install rolls.

Up to 2 m high

Our highest dam remains perfectly effective against up to 200 cm of water.

Guaranteed efficiency

A single flood dam can instantly replace up to 10 pallets of sandbags.

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

Various heights available

A comprehensive range to cover every eventuality. Depth of ground coverage varies from 1.4 m to 8 m depending on the height of the dam.

100% Connectable

All dams/cofferdams, regardless of their height, can be quickly connected to one another using the double-Velcro system, with no need for tools.

Compact: minimal storage space required

Fashioned from carefully calibrated ultra-resistant tarpaulins, WaterGate can be folded like an inflatable boat.

Emergency protection

WaterGate can be installed at the last minute, just before the water arrives. It is also possible to deploy the dam when flooding has already begun.

Fully customisable protection route

Whether you need curves or a straight line, WaterGate dams can be bent in any direction, even at right angles.

All types of terrain

No need for flat ground! WaterGate fits over all kinds of obstacles: rocks, rails, low walls, etc. It grips perfectly on all types of surfaces, even ice!

Effective at long lengths

Water-Gate has the same properties regardless of the length of the perimeter being protected or the volume of water being retained.

Ready to use

The dam is delivered equipped and ready to be deployed. It is a self-contained unit that requires no additional equipment, no inflation, and no lengthy connection process.

No anchorage required

The dam self-stabilises and is held in place by the force of the water. Water-Gate can retain thousands of m3 of water without anchorage.

Easy to repair

Can be repaired on dry land or in water in the very unlikely event of a tear developing. Watertightness guaranteed thanks to the pressure exerted on the fabric by the water.

Lightweight and easy to handle

The dams are manufactured in various unit lengths, all less than 15.2m, allowing them to be installed by a single individual or pair.

No maintenance costs

The dam does not require any special maintenance if stored properly. No electrical equipment (e.g. pumps) or metal components (e.g. fasteners/connectors) that could deteriorate over time.

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 20 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

TORTURE TEST
Apr 2015 – VICKSBURG, MISS – U.S.A.
No compromise
Nicolas Klein
Nicolas KleinCOO Megasecur.Europe
Pascal Klein
Pascal KleinOwner Megasecur.Europe
Daniel Déry
Daniel DéryCEO & MegaSecur Founder

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.