Building for Resiliency in a Floodplain

By Geoff Cape, CEO and Founder, Evergreen

Geoff Cape, founder and CEO of Evergreen, oversees the idea development and relationship building that advances Evergreen’s mission to create flourishing cities. Working with the Board of Directors and Executive Team, he sets overall strategic direction, goals, and priorities while maintaining financial health and program quality. Geoff comes to his work with a forward-looking systems approach, developing innovative plans that move the levers of urban sustainability, inclusivity, and resilience across Canada.


Who will you meet?

Cities are innovating, companies are pivoting, and start-ups are growing. Like you, every urban practitioner has a remarkable story of insight and challenge from the past year.

Meet these peers and discuss the future of cities in the new Meeting of the Minds Executive Cohort Program. Replace boring virtual summits with facilitated, online, small-group discussions where you can make real connections with extraordinary, like-minded people.


 

More than 50 years ago Hurricane Hazel blasted across the Atlantic region, causing hundreds of fatalities in Haiti, the United States, and Canada. It had an unprecedented reach in my hometown of Toronto. To date, it was the city’s worst natural disaster, with the greatest destruction from flooding.

This example in Toronto is not an isolated incident, each year we see weather-related disasters gravely impacting cities around the world. With climate change fast becoming one of the most critical challenges facing cities, these severe weather events will only continue to affect our ecosystems, economies, and communities.

Cities around the world are declaring climate emergencies and embarking on resiliency plans. Here in Canada, cities like Montreal, Toronto, Calgary, and Vancouver have recently launched resiliency strategies, which have brought together experts from across sectors to understand and plan for stresses in a more holistic way. If there is a flood, yes, we need to respond to the influx of water, but will we have plans in place to deal with the economic and social impacts?

A decade ago, we embarked on a bold project to transform an abandoned urban 42 acre industrial site into Evergreen Brick Works, a thriving community hub and example of adaptive reuse, on a floodplain.

They said we couldn’t do it.

View of Evergreen Brick Works in Toronto’s Don Valley. Photo by Tom Arban.

Experimentation is Key to Accelerating Innovation

Hurricane Hazel resulted in efforts to protect and regulate lands and water flow, which restricted new development in floodplains. Toronto is built on a massive ravine system which flows into Lake Ontario, and these efforts aimed to allow rivers to flow naturally and to reduce flood risk to people and property.

The task of building a large-scale community environmental centre on an area restricted from new development was only part of the challenge. Developing on an industrial site posed other complications: adhering to industrial heritage requirements, addressing soil contamination and convincing lease-holders (municipal government and conservation authority) to grant access to a not-for-profit with no real estate experience. It was critical to bring together a unique team of development and construction experts, architectural partners and funders willing to take the risk.

The site’s restrictions offered new opportunities to advance innovative approaches in how we build buildings.

Knowing that flooding is inevitable, we moved forward with developing the Brick Works site by testing new green design features that would mitigate risk and withstand most rain events. Stormwater management ponds collect water from the central parking lot; greenways and other hard surfaces filter sediment in the water before it’s released into the Don River. We also built out the site with wet flood-proofing, which allows water to flow in and out of buildings instead of preventing it from entering. A raised floor made of Cupolex allows water, moisture, and gases to escape from beneath the floor. Elevators default to the second floor, and mechanical systems are located above the projected water level from even the most severe flood. These measures are meant to minimize damage rather than stop the flood, and they were successfully put to the test during spring floods in 2012 and again in 2013.

New Concrete floor in the Kiln Building at the Evergreen Brick Works, March 2017.
Photograph Bryan McBurney/ Copyright Bryan McBurney

Fast forward to today where we have expanded on the original ideas with the creation of the TD Future Cities Centre, an international hub for urban innovation related to low-carbon, climate-ready cities.  For the first time ever, we analyzed the GHG emissions associated with the construction process with an end goal of carbon neutrality. The process to analyze the full life-cycle of the project is very difficult and time consuming but the outcome will be groundbreaking in setting a new standard for future buildings.

Aligning with Unlikely Partners to Invest in Green and Blue Infrastructure

While cities build for density and become increasingly congested, we must make bold investments in public spaces, and places for green (trees, fields, forest, etc.) and blue (rivers, wetlands, floodplains, etc.) infrastructure.

For 30 years, Evergreen has been deeply involved with ecological restoration and conservation projects in cities across the country. Most notably we have worked in Toronto’s 45,000 acre ravine system, the largest urban ravine system in the world. It touches virtually every community and is connected to the world’s largest green belt, with over two million acres of protected lands.

While the ravines are sometimes forgotten and buried under a growing population and layers of urban development, this ecological system of green and blue infrastructure features, plays an important role in residents’ quality of life and the city’s resilience. Our city’s built space has its foundation in the ravines, rooted in a wild landscape of dramatic geography and forest that been scarred by industry.

Brick Works and Quarry
Don Valley Brick Works Park behind Evergreen Brick Works.
Photo by: Kristin Foster for Evergreen.

In recent years, the ravines have slowly remerged in our city’s awareness thanks to innovative partnerships and dedicated restoration efforts.

We have seen firsthand the success of a shared working model when community leaders come together. In our case, Evergreen, the City of Toronto, the Toronto and Region Conservation Authority, private donors, and a very strong network of community organizations who are deeply passionate about this globally unique green space.

Five years ago, Evergreen launched a campaign to create the Don River Valley Park, a ‘super park’ encompassing a 480-acre green space that connects Evergreen Brick Works to Lake Ontario. The project has led to significant trail improvements, new gateways, bridges, signage, and a unique public art program, all while working to restore and protect ecosystems. More than that, this “first mile” project has catalyzed a much larger commitment to a 45,000 acre city-wide ravine strategy that is currently taking shape between government, organizations like Evergreen, and private partners.

Over the years we have learned that complex challenges require unique partnerships, and by working together we can develop innovative solutions to make our cities more livable, green, and prosperous for all to thrive.  Whether it’s restoring Toronto’s vast network of ravines as the city’s backyard, rebuilding unused rail corridors as linear parks in New York, or reshaping Singapore’s skyline with ‘Supertrees’ at its Gardens at the Bay, these projects demonstrate how natural and built assets can be a place for everyone. And this kind of collaborative investment in green and blue infrastructure is essential in creating low carbon flourishing cities of the future.

Discussion

Leave your comment below, or reply to others.

Please note that this comment section is for thoughtful, on-topic discussions. Admin approval is required for all comments. Your comment may be edited if it contains grammatical errors. Low effort, self-promotional, or impolite comments will be deleted.

1 Comment

  1. I teach grade 5 Science on Toronto Island, and my students are currently designing flood proof structures and mechanisms in preparation for the effects of climate change. Do you have any other resources connected to this topic that might be appropriate?

    Reply

Submit a Comment

Your email address will not be published. Required fields are marked *

Read more from MeetingoftheMinds.org

Spotlighting innovations in urban sustainability and connected technology

No Equity, No Resilience: Minneapolis is All of Us

No Equity, No Resilience: Minneapolis is All of Us

This article was originally published on September 8, 2020.

Update for April 20, 2021:

After the murder of George Floyd we wrote this article as a kind of blueprint, a beginning to a new way of working with equitable resilience in our cities and beyond. Now, as the trial of Derek Chauvin comes to a guilty verdict in Minneapolis and the whole country reflects on the legacy of that verdict, we have to remember another senseless murder – another young Black man, Daunte Wright, at the hands of law enforcement, just miles from the courthouse. Again, Minneapolis is all of us. We have protested, we have voted. We stood up, we spoke out, we have raged about the anti-Black racism. We have seen people come together, we can feel a shift in this country. But there is so much more to do. No equity, no resilience.

-Ron & Stewart

How Affordable Green Housing Enhances Cities

How Affordable Green Housing Enhances Cities

Housing that is affordable to low-income residents is often substandard and suffering from deferred maintenance, exposing residents to poor air quality and high energy bills. This situation can exacerbate asthma and other respiratory health issues, and siphon scarce dollars from higher value items like more nutritious food, health care, or education. Providing safe, decent, affordable, and healthy housing is one way to address historic inequities in community investment. Engaging with affordable housing and other types of community benefit projects is an important first step toward fully integrating equity into the green building process. In creating a framework for going deeper on equity, our new book, the Blueprint for Affordable Housing (Island Press 2020), starts with the Convention on Human Rights and the fundamental right to housing.  

The Pandemic, Inequality, Housing Affordability, and Urban Land

The Pandemic, Inequality, Housing Affordability, and Urban Land

Since the Great Recession of 2008, the housing wealth gap has expanded to include not just Black and Brown Americans, but younger White Americans as well. Millennials and Generation Z Whites are now joining their Black and Brown peers in facing untenable housing precarity and blocked access to wealth. With wages stuck at 1980 levels and housing prices at least double (in inflation adjusted terms) what they were 40 years ago, many younger Americans, most with college degrees, are giving up on buying a home and even struggle to rent apartments suitable for raising a family.

What makes it hard for policy people and citizens to accept this truth is that we have not seen this problem in a very long time. Back in the 1920s of course, but not really since then. But this is actually an old problem that has come back to haunt us; a problem first articulated by Adam Smith in the 1700s.

The Future of Cities

Mayors, planners, futurists, technologists, executives and advocates — hundreds of urban thought leaders publish on Meeting of the Minds. Sign up below to follow the future of cities.

You have Successfully Subscribed!

Wait! Before You Leave —

Wait! Before You Leave —

Subscribe to receive updates on the Executive Cohort Program!

You have Successfully Subscribed!

Share This