What is a blue-green alley? 

A blue-green alley is an alley specially designed to improve stormwater management. The roof drains of one or more buildings are not connected to the sewer system, to let stormwater benefit the local ecosystem. Advantages of this method include greater resilience to heavy rainfall, reduced heat islands and backflow into streams and the river, and increased biodiversity. Find out more about the Blue-Green Alleys (in French) project and discover the interpretation signs on site. 

Bâtiment 7 

Le 7 À NOUS, the organization that owns Bâtiment 7, is overseeing the project. It is using the alley to manage the rainwater that runs off its building in a resilient and ecological way. This new approach highlights our willingness to do things differently to save our planet. It can inspire other Montréal boroughs and Québec municipalities to take similar steps. 

CN shops 

The blue-green alley is the first in a series of future parks and green spaces that will completely transform the former CN shops area of Pointe-Saint-Charles into a district where modernity and ecological transition go hand in hand. Find out more (in French).