Urban implementation of green stormwater control systems as an option for climate change adaptation: benchmarking provincial, Canadian and international practices
Urban implementation of green stormwater control systems as an option for climate change adaptation: benchmarking provincial, Canadian and international pratices
Green stormwater control systems are part of the integrated stormwater management measures sought by Quebec municipalities. These systems could reduce flooding, backflow and overflow, thus constituting valid options for adapting to climate change and increasing the resilience of communities to the latter. These systems also provide hydrological, environmental (water quality and air, biodiversity), aesthetic, leisure and safety benefits, among others. Tried and tested abroad, they can contribute to improving the citizens’ quality of life.
In Quebec however, the systems’ performance, ability to integrate the urban landscape and social acceptability remain unproven. This encourages municipalities to focus on pilot projects to validate their performance and acceptability under local conditions and if necessary, to improve the design and implementation method.
Municipalities must implement these projects in the best possible conditions. Implementing the most appropriate systems based on a given site or choosing the best sites for a given system according to technical, landscape and social criteria will determine success and potential social acceptability. Social acceptability guarantees citizen participation in adapting to climate change.
This project aims to develop an implementation framework for pilot projects. Initially, it should help municipal officials and experts determine the most favourable type of green infrastructures and implementation sites, design and method based on criteria specific to the system and receiving environment. These criteria are multiple and include:
- Performance and design criteria: potential reduction of volume, peak flows and water quality increase; design, soils and plants used;
- Site-specific criteria: biophysical, hydrological, environmental (water quality), infrastructure, vulnerability, landscape integration, potential improvement of quality of life and impact on citizens.
The project will establish a hierarchy of criteria to facilitate phased decision-making. The decision-making process or intervention framework will be designed for the implementation of green stormwater control systems on a large scale and in other contexts.
- Research direction
- Research agent/assistant
- Alice Fabre, research assistant, CPEUM
- Lucile Besson, research assistant, CPEUM
- Lysanne Audet, research assistant, CPEUM
- Sylvain Pouzet, research assistant, CPEUM
- Jacques Brisson, Full professor, Plant biology research institute (IRBV), University of Montreal
- Robert Chapuis, Full professor, Department of Civil Geological and Mining Engineering, École polytechnique de Montréal
- Yves Comeau,Full professor, Department of Civil Geological and Mining Engineering, École polytechnique de Montréal
- Caroline Gagnon, research agent, CPEUM
- René Pronovost, Head of Division, Horticulture and collections, Montreal Botanical Garden