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.

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.

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!

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.

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

Nicolas KleinCOO Megasecur.Europe

Pascal KleinOwner Megasecur.Europe

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.

Suitable for all types of current

Regardless of the flow or direction of the current. The dam / cofferdam can resist waves and overflow currents.

Exceptional watertightness

Thanks to the pressure exerted by the liquid on the fabric and the integrated ballast system. Leak rate of less than 4 l/min per linear metre on a smooth surface (like concrete).

Shock-resistant

Thanks to its design and its flexibility, WaterGate easily absorbs the energy from collisions with drifting objects (e.g. tree trunks).

Certified

A safe solution, tested by the US Army Corps of Engineers. Certification from FM Approvals is a world-renowned benchmark when it comes to property loss prevention.

Guaranteed manufacturing quality

Made in Canada, in our factory in Victoriaville. Each dam is manufactured and inspected in line with our stringent quality standards. You get traceability and a 2-year manufacturing guarantee.

World-renowned expertise for over 15 years

MegaSecur makes the most of its experience and carries out a feasibility study for each new project.

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.