Stormwater basics

Rain and snowmelt become a shared systems question once they reach roofs, roads and neighbourhoods.

Stormwater may soak into soil, move across hard surfaces, enter drains, pass through ponds and pipes or reach local watercourses. The route depends on land, infrastructure and weather.

Ontario-wide Source-aware Clear credential scope
Rain and snowmelt become a shared systems question once they reach roofs, roads and neighbourhoods.
Published by: RSMLast reviewed: 2026-07-19Scope: Canada, with Ontario programme depth

Understand the pathway

Separate surface water, groundwater, sewer backup, drainage and equipment issues.

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Know the limits

No single device or maintenance action addresses every flood pathway.

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Start with official local information

Use municipal, regional and conservation-authority sources for current programmes and emergencies.

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Safety first

During active flooding, prioritize people, electrical safety and official emergency instructions. Do not enter unsafe water or work on energized equipment.

Clear information helps people prepare before the water arrives.

Public education

Clear information helps people prepare before the water arrives.

Homeowners and communities need understandable explanations, maintenance habits, emergency awareness and reliable local sources.

Find the right pathway

Regional Stormwater Management

Build knowledge. Strengthen practice. Connect Ontario.

Explore RSM training, certification, standards, public education and municipal-resource pathways.