On March 8, 2017, I braved the rain to attend a City of Vancouver open house at Volunteer Park that sought public input on plans to restore historic Tatlow Creek. I’m particularly excited about this project given my awareness of the many positive impacts of creek daylighting.

As I’ve described in a previous VPSN blog post, daylighting is a strategy that restores creeks and streams to a more natural state. As its name suggests, the practice involves uncovering buried, culverted creeks and bringing them back to the surface. While accomplishing this goal in a built-up area can present difficulties such as up-front costs and working around existing structures and property ownership, the long-term benefits include:

• storage and absorption of stormwater runoff over vegetated and riparian surfaces to improve water quality and prevent stormwater surges;
• cooling the air to reduce the heat island effect;
• providing public places of respite, recreation and access to nature;
• improved aesthetics and neighbourhood beautification;
• increased wildlife habitat and biodiversity;
• opportunities for education about local history and ecology; and
• opportunities for stewardship, a sense of pride, community spirit and connection.

With such a range of benefits, several cities around the world have adopted the practice of daylighting. Seoul’s Cheong Gye Cheon Project is a stand-out example. Initiated in 2003 and lauded as a success, this project involved removing a downtown freeway to restore the creek beneath. The most noteworthy benefits have been the increased natural habitats for various fish, bird and insect species and a significant cooling effect, with temperatures along the stream as much as 5.9° C lower than in nearby areas.

Several locations in Vancouver have also seen successful creek restoration, including Spanish Banks, Musqueam, Hastings and Still Creek, with salmon returning to spawn in Spanish Banks, Musqueam and Still.

Tatlow Creek, past to present

Formerly known as First Creek, Tatlow Creek was once fed by the area’s groundwater and flowed through both Tatlow Park and Volunteer Park before entering English Bay. As explained by the City’s presentation at the open house, urban development caused the original Tatlow Creek to be diverted and buried. The natural watershed was replaced by underground pipes, resulting in a deeper water table and altered hydrological processes. The existing stream currently begins in Tatlow Park, enters a culvert under Point Grey Road and discharges into English Bay through underground pipes.

Tatlow Park today

The project aims to uncover and restore further the stream that once flowed through what is now Volunteer Park. Fed by stormwater runoff, the restored stream will be filtered naturally through a series of pools alongside the stream before entering English Bay. This creek daylighting project also includes restoring the shoreline at the foot of Volunteer Park, currently overrun with invasive species, to a more natural state. Improved waterfront access for pedestrians and native plantings alongside the stream will create a riparian habitat for birds and pollinator species. 

Seeing benefits

The project aligns with the Vancouver Park Board’s Biodiversity Strategy as well as the Access to Nature goal that the City of Vancouver has articulated as a component of its Greenest City Action Plan. It has also been identified as a “potential new water focus project” as part of the City’s Integrated Rainwater Management Plan. According to the City, the project will:

• create an ecologically diverse stream corridor in Tatlow and Volunteer parks;
• improve access to the shoreline through new paths;
• restore and enhance riparian and shoreline habitat for birds and other wildlife; and
• improve rainwater management.

Have your say

Design concept A: Nature park. Image: City of Vancouver

During the open house, two design concepts were presented. One (“Nature park,” above) had the overarching goal of maximizing habitat creation and biodiversity. The other (“Gathering and play space,” below) focused on increased amenities for humans such as a larger number of pathways and play areas, formal stream crossings and picnic tables. The design concepts can be viewed in comprehensive form on the City’s website.

Design concept B: Gathering and play space. Image: City of Vancouver

The City is in the late phases of concept development and will use the feedback obtained from the public to create a final concept for board approval this summer. Detailed designs will be carried out through fall and winter 2017, with construction beginning in summer 2018. The project is slated for completion in summer 2019.

Want to provide feedback to the City on this project? The preliminary design concepts and a questionnaire are currently online and available until April 3, 2017.

Even as an adult it is hard to imagine that less than 150 years ago the area that is now Vancouver was a dense temperate rainforest populated with diverse wildlife where a network of creeks and streams flowed and emptied into the Burrard Inlet, False Creek or the Fraser River. It was home to First Nations people who for thousands of years had more than adequately sustained themselves on the abundant resources that the watershed provided. In addition to the current exhibit at the Museum of Vancouver, Rewilding Vancouver, one only has to hike any number of North Shore trails to get an idea of what Vancouver was like before the arrival of European settlers.

Horse-drawn wagons on North Arm Road (Granville Street near 37th Avenue) circa 1895. Image: City of Vancouver Archives

While viewing a map of Vancouver’s creek system during an urban design lecture, I discovered that my dad was not telling tall tales after all. The map showed a creek near my dad’s childhood home in the exact place he had claimed. More recently, the UBC Library digitized the content of the Vancouver Aquarium’s old paper maps. This high-resolution digital map allows you to view the paths of old streams and the original shoreline of Vancouver. My dad used it to illustrate the creek’s location in relation to his family’s home. A few months ago he also found a photo taken around 1948 of his childhood friend standing in the creek bed, showing that even in the more recent past, parts of Vancouver’s creek system were still visible (had he produced this when I was younger, I may have been more easily convinced of his fishing claims). According to dad, the wooden bridge visible in the background of this photograph was where East 62nd Avenue crossed the creek.

Location of creek in relation to my dad’s childhood home. Annotations: Terry Pollard

Creek bed, South Vancouver circa 1948. Image: Terry Pollard

So what happened? Where did all these creeks go? The arrival of the first Europeans brought a different set of values. To them nature was viewed as an inhospitable nuisance—something to be controlled and exploited. Within a few short decades the watershed’s abundant natural resources were extracted, processed and sold—replaced with a system of roads, streetcar tracks and sewers, buildings and railroads, non-native trees and plants. Creeks and streams were diverted, buried, paved over or just ignored—sometimes resulting in disastrous consequences.

Flooding at Broadway and Heather circa 1909. Image: Vancouver City Archives

Within the last half-century, however, a new set of values has emerged and we have a better understanding of ecosystem functioning and its value not only to the planet but also to our own well-being. With this new set of values, a new way of thinking about nature and its role in city life has also emerged and with it a movement toward integrating nature into the urban environment. One way to achieve this integration is by daylighting. Creek or stream “daylighting” is a strategy that restores creeks and streams back to their natural state. As the name suggests, it involves uncovering these buried, culverted creeks and bringing them back to the surface. While accomplishing this strategy in a built-up area is fraught with complications such as the up-front costs, working around existing structures and property ownership, the long-term benefits are several. Some of these benefits include:

• Storage and absorption of stormwater run-off over their vegetated and riparian surfaces to improve water quality and prevent stormwater surges
• Cooling the air to reduce the heat island effect
• Providing public places of respite, recreation and access to nature
• Improved aesthetics and neighbourhood beautification
• Increased wildlife habitat and biodiversity
• Opportunities for education about local history and ecology
• Opportunities for stewardship, a sense of pride, community spirit and connection

Illustration by Richard Register depicting how aging built structures surrounding creeks can be removed over time to restore the urban watershed.

With such a range of benefits several cities in North America and elsewhere have adopted the practise of daylighting. One of the most striking examples is in Seoul South Korea. The Cheong Gye Cheon Project was initiated in 2003 and involved removing a freeway in downtown Seoul to restore the creek located underneath it. Lauded as a success, the most noteworthy benefits are the increased natural habitats for various fish, bird and insect species and a significant cooling effect with temperatures along the stream as much as 5.9 °C cooler than in other nearby areas. Several creeks in Vancouver have also been successfully restored including Spanish Banks, Musqueam, Hastings and Still Creek with salmon returning to spawn in Spanish Banks, Still and Musqueam Creeks.

Cheong Gye Cheon, before and after. Image: http://www.streetsblog.org/2006/12/08/seouls-new-heart/

Is creek daylighting in Vancouver something that interests you? Want to get involved? Evergreen manages volunteers for these projects, and there are many more green volunteer opportunities listed on the City’s website. Other groups in Vancouver who advocate, raise awareness and provide volunteer opportunities for creek daylighting and restoration include: False Creek Watershed Society, St George Rainway Project, Langara Wetland Project, Gibby’s Field and Stanley Park Ecological Society. Explore the digital map provided with this post – perhaps there’s a lost creek in your neighbourhood where redevelopment might occur soon or where surrounding aging built structures could be removed in the future. For example, using UBC’s digital map, I discovered a creek that flows underneath the Arbutus Shopping Centre. This property is slated for redevelopment with opportunities for public input during the development permit process.

A creek running under Arbutus Shopping Centre. Annotations: Michelle Pollard

While the urban watershed can never be completely restored to its natural state, with so many potential benefits, projects like these set a precedent for future daylighting projects and represent one of the many ways Vancouver could meet its Greenest City 2020 goals. Imagine a creek running through your neighbourhood…

St. George Creek imagined. Image: Bryn Davison

For further reading on daylighting and the value of nature in cities, check out:

The Nature of Cities

Timothy Beatley’s Biophilic Cities: Integrating Nature Into Urban Design and Planning (2011)

Patrick M Condon’s Seven Rules for Sustainable Communities: Design Strategies for the Post-carbon World (2010)

Richard Register’s Ecocities: Rebuilding Cities in Balance With Nature (2006) 

Mark Roseland’s Toward Sustainable Communities: Solutions for Citizens and Their Governments (2012)

Celebrating St. George Creek, June 4, 2011
Sat., June 4, 2011
Mount Pleasant Elementary, 2300 Guelph St. (8th Ave)

11 am: Parade

Join the Carnival Band and storyteller Naomi Steinberg in a parade tracing the historical creek beneath St. George Street. Water themed costumes are encouraged. Meet in the field of St. George St. and 7th Ave. We’ll end the parade with lunch at Mount Pleasant Elementary.

1 pm – 3 pm: Community Design Workshop

Join Julien Thomas (community member, facilitator), Branca Verde (City of Vancouver – Community Planning), and more local citizens to share ideas for how to green and blue our neighbourhood (Mount Pleasant Elementary lunchroom).

All are welcome to these free events. Please forward this to folks who might be interested.

RSVP’s are appreciated so we know how many to plan for. To RSVP, please email Rita, rwong@ecuad.ca

http://mtpleasantwatershed.wordpress.com

or look for
St. George Blueway on Facebook