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Bow River Risk Assessment and Debris Removal

Protecting the community from risks associated with the aftermath of the 2013 flood

  • 160+

    Tonnes Removed

  • Calgary, Alberta

    Calgary, Alberta

Using 2-D modeling to inform a design plan for river safety

After the 2013 flood in Calgary, the City identified a potential flood and erosion risk in the Bow River—revegetation of a gravel bar and changes in the river channel posed a risk to the community. The City enlisted us to address public safety, flood, and erosion risks present for a three kilometre reach, or stretch, of the river.

We conducted 2-D modeling to analyze existing conditions and potential future channel changes at the site. Following our modeling and analysis we collaborated with stakeholders and conducted a workshop to get feedback on proposed design concepts. After evaluating all design options, we worked with the City to proceed with a design plan best suited for community safety. Experienced engineers, biologists, regulatory specialists, and landscape architects secured regulatory approvals and developed the plan to remove historic concrete and rebar debris that posed a public safety hazard on an island in the river.  

Our team managed the construction, provided environmental monitoring support, and construction quality assurance for the successful removal of over 160 tonnes of concrete and steel from the island and river channel. Completed in 2021, this project helped make the Bow River safer for boaters, rafters, and other river users.

At a Glance

  • City of Calgary
Meet Our Team

Lacey AuCoin, Senior Associate, Environmental Planner

I work closely with clients and regulators to integrate the environmental mitigation strategies that meet project objectives.
Lacey AuCoin Senior Associate, Environmental Planner Read More

James Bigelow, Associate, Senior Hydrotechnical Engineer

As people, we are naturally connected to water—it’s our duty to design with both the natural habitat and community resiliency in mind.
James Bigelow Associate, Senior Hydrotechnical Engineer Read More

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, Principal

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

Reza Ghavasieh, Senior Hydrotechnical Engineer

Key indicators for project success are communication, building a relationship with the client, and striving to exceed delivery expectations.
Reza Ghavasieh Senior Hydrotechnical Engineer Read More

Lacey AuCoin

Senior Associate, Environmental Planner

James Bigelow

Associate, Senior Hydrotechnical Engineer

Carly Silver

Environmental Director, HSSE

Matt Wood


Reza Ghavasieh

Senior Hydrotechnical Engineer

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