Green stormwater infrastructure (GSI) techniques are now part of the mainstream stormwater conversation strategies for industrial sites in Western Canada. Requirements vary by jurisdiction, but the goals are consistent. GSI uses ecologically-aligned infrastructure installations to manage excess rainwater runoffs and protect waterways from pollution.
Plan Stormwater Right from the Start
Avoid delays, rework, and compliance issues. Get expert guidance on GSI design, drainage planning, and regulatory requirements for your industrial site.
Contact UsRegulations for Industries Across Western Canada
For industrial proponents, regulators are not asking for greenery for its own sake. They are looking for defensible stormwater performance. In British Columbia, local governments have authority to limit impervious surfaces, encourage infiltration, prevent contaminants from entering storm drains, and protect watercourses and floodplains.
In Edmonton, runoff from large sites and industrial sites discharging to storm sewer should be treated for water quality before release to a receiving watercourse, and the City strongly encourages low impact development alongside other best management practices such as oil and grit separators.
In Calgary, stormwater submissions for development are guided by the City’s Stormwater Management and Design Manual, stormwater report checklists, and Low Impact Development guidance. For industrial and other private sites, the City expects proponents to address runoff quantity and quality, and it provides specific BMP/LID submission requirements for measures.
In Saskatoon, the Design and Development Standards Manual requires storm water design reports for new, infill, and redevelopment sites, including proposed land uses, drainage plans, calculations, and on-site stormwater management. The City encourages low impact development as part of on-site stormwater management and also ties BMP performance to its Storm Water Management Credit Program for non-residential properties.
GSI Techniques That Are Best on Industrial Sites
Rain gardens might look nice in residential areas, but heavy industries require specialized green infrastructure. Here’s what is expected according to various municipal and regional requirements:
- Bioretention and bioswales for cleaner runoff streams such as roof drainage or low-risk landscaped edges
- Permeable pavement in targeted applications where sediment loading, maintenance access, and winter operations are manageable
- Vegetated swales, absorbent landscapes, and tree-based systems to slow, filter, and convey runoff
- Hybrid systems that pair GSI with conventional controls such as detention, oil-grit separation, and controlled discharge
Vancouver’s Rain City Strategy sets a citywide target to capture and clean 90% of rainwater and a performance standard of 48 mm per day, while Calgary and Saskatoon both provide technical LID guidance for development and redevelopment.
Messaging from local governments is loud and clear. Watershed-minded designs are not optional. They are embedded in standards and review expectations.
Where Industrial Projects Often Go Wrong
In practice, weak submissions usually fail in one of three places:
- They propose infiltration without addressing contamination risk
- They treat maintenance as an afterthought
- They describe features, but not performance
Strong submissions do the opposite. They separate clean and dirty drainage areas, tie each GSI element to a realistic runoff source, and show how the system will be inspected, maintained, and adapted over time.
Bring Green Stormwater Infrastructure into Your Site Strategy Early
Green stormwater infrastructure works best on industrial sites when it is planned early. The goal is not to force every site into the same template. It is to build the right balance of source control, treatment, storage, and operational practicality for the conditions on the ground.
At Nichols Environmental + Engineering, we help clients make that call. From drainage planning and civil design to environmental risk assessments, we work alongside your team to develop the stormwater strategies that move your project ahead.
Contact us today to learn more about our services.
