What you need to know
The Rainwater Management Bulletin PDF file (903 KB) provides rezoning, development, and building permit applicants with information on the process and submission requirements related to rainwater management at development sites throughout Vancouver.
Current areas of concern
- The Cambie Corridor, as defined by the Cambie Corridor Plan
On-site rainwater management is needed to mitigate the impacts of increasing rainfall intensity due to climate change and increasing runoff caused by added imperviousness from denser development.
This will be achieved through a combination of increased pervious surfaces that allow rainwater to infiltrate, landscaped systems which allow rainwater to irrigate and evaporate, and capture and use of rainwater.
The use of water-sensitive site design and green rainwater infrastructure practices or source controls keeps harmful rainwater pollutants from entering our receiving waters, adds resilience to our drainage system, and reduces combined sewer overflows.
Implementing more green rainwater infrastructure and increasing pervious surfaces in Vancouver, are part of our holistic One Water approach to valuing water in all its forms.
