Canada Day storm a 1-in-200-year event with 167 mm rain: City of Ottawa

The City of Ottawa confirms the July 1 storm was a 1-in-200-year weather event, dumping 167 mm of rain in some areas. Ontario promises aid but no timeline.

Polar Herald 2026-07-11 14:31

Canada Day storm a 1-in-200-year event with 167 mm rain: City of Ottawa — Canada Day storm a 1-in-200-year event with 167 mm rain

Record rainfall and historic flooding

The Canada Day storm that battered Ottawa has been classified as a 1-in-200-year weather event, according to the City of Ottawa. Some areas received 167 mm of rain, causing widespread flooding and damage across the region.

Ontario government pledges aid

The Ontario government says help for flood-stricken residents is coming, but there is still no timeline for when assistance will arrive. CTV's Katelyn Wilson reports that officials are assessing the damage and coordinating response efforts.

Impact on residents and infrastructure

The intense downpour overwhelmed drainage systems, flooded basements, and closed roads. Emergency crews responded to numerous calls for help. Residents are urged to document damage and contact their insurance providers.

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“This was an unprecedented event,” said a city spokesperson. “We are working with provincial and federal partners to secure disaster relief funding.”

Climate change and extreme weather

Meteorologists note that such extreme rainfall events are becoming more frequent due to climate change. The 1-in-200-year designation means there is a 0.5% chance of such an event occurring in any given year.