We receive many questions about our flood protection systems and cofferdams and how they work. We’ve answered some of the most frequently asked questions here.

General Questions

Here are answers to general questions about what we do and who we are.

What Locations Does Portadam Serve?

We’ve provided water control and diversion services for more than four decades, serving areas across the U.S. and worldwide. Our products have been used in more than 6,000 projects globally.

What Is the Maximum Height Available?

Our systems are available in heights of up to 12 feet. You can combine individual units to accommodate uneven terrain and varying subsurface elevations. Our most popular system, the FloodDefender®  system, ranges from three to six feet in height.

What Is the Environmental Impact of Deployable Flood Protection Barriers?

The Portadam system has a reputation as one of the most environmentally friendly methods for water containment, whether used as a flood protection system, temporary cofferdam or water storage solution.

Our system minimally impacts the environment, as all component parts are easily and completely removed at the end of a project. There are no earthen materials or sand used to create the structure, reducing the risk of cross-contamination. Additionally, noise and vibration concerns aren’t present with our system.

In the case of cofferdams, our system doesn’t break past the subsurface, so there aren’t long-term concerns or permanent faults left in the riverbed.

Can the Portadam System Handle Flowing Water?

Our flood protection systems and temporary cofferdams perform well in flowing waters.

Flood Protection

Take a look at the answers to questions about our flood protection systems.

Can You Combine Individual Units?

Our flood protection systems have a modular design, which allows you to combine multiple units to get the protection you need.

How Do You Know If You Have a Flood Risk?

Your flood risk affects many things, including your insurance premiums and coverage options. You can use the Federal Emergency Management Agency’s (FEMA) Flood Map Service Center to evaluate your risk.

Are Portadam Systems Customizable?

Yes, our flood protection systems are customizable for each site. We will work with you to design a system that meets your unique needs based on the length, height, number and type of corners you need.


Find out the answers to commonly asked questions about our cofferdams.

How Is the Cofferdam System Priced?

Several factors influence the price of our flood protection systems, including the length in linear feet, the number of corners needed and the system height. Your location can also affect the price, due to shipping. Contact us for more information on pricing and a free, no-obligation quote.

What Are the Uses of a Temporary Cofferdam?

There are many applications for a temporary cofferdam, including:

What Types of Cofferdams Are Offered?

We offer fully customizable, temporary cofferdams made from steel and impervious, reinforced fabric.

What Is the Purpose of a Cofferdam?

Our cofferdams are used in various construction projects, including bridge and dam construction and repairs, boat ramp installation and pipeline installation. The purpose of the cofferdam is to hold water back from the construction site, increasing safety and keeping the site dry.

What Is the Construction Process of Cofferdam Systems?

Our temporary cofferdams consist of individual sections you can install independently. You can also move the cofferdam as needed throughout your project. We provide initial and refresher deployment training to help you become familiar with the installation process.

Contact Portadam Today to Learn More

We hope you found the answers to your questions in the list above. If you have more questions or are interested in a site survey request or quote, contact us today to learn more.

Contact Us