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City of Calgary Outfall Repair Program

Delivering repairs to stormwater outfall structures with a multidisciplinary team after extensive flooding

  • Calgary, Alberta

    Calgary, Alberta

Innovative methods decrease construction complexity and costs

Heavy rainfall in southern and central Alberta caused extensive flooding in June of 2013. Flood waters seriously damaged many stormwater outfall structures within Calgary and left others requiring moderate and minor repairs. The City of Calgary needed a multidisciplinary consultant to provide engineering design, environmental, regulatory, and construction services for 45 outfall sites. Ultimately, they relied on our expertise in outfall design and regulatory consulting, and our ability to deliver under immense coordination demands. We identified innovative methods to decrease construction complexity and costs.

While planning for the restricted activity periods (RAPs), we employed two strategies to improve project efficiency. To begin, we completed joint site assessments with the city to investigate each outfall site, confirming any outfall sites that did not warrant the cost of repair. Then we developed a simple assessment and monitoring plan for each site, focusing on the work that would be executed within the RAP.

As a result, we identified sites that could be completed within the RAP as they followed a set of innovative mitigation measures. This saved the program money and increased the available instream construction days.

At a Glance

  • City of Calgary
Meet Our Team

Matt Wood, Principal

I help build flood resilient communities by restoring rivers and riparian areas, designing riverine infrastructure, and flood mitigations.

Juan Morales, North American Discipline Leader – Site Civil, Water

My goal is to help develop infrastructure projects that provide better water use for everyone—and to have fun while doing it.
Juan Morales North American Discipline Leader – Site Civil, Water Read More

Patrick Doyle, Senior Associate

I strive to support and elevate the people around me to build trust, forge strong relations, and create high performing teams.

Carly Silver, Environmental Director, HSSE

We want to do what’s right for the environment—working as a team, we can find ways to minimize impacts and improve environmental outcomes.

Matt Wood


Juan Morales

North American Discipline Leader – Site Civil, Water

Patrick Doyle

Senior Associate

Carly Silver

Environmental Director, HSSE

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