Ottawa's Canada Day storm flooding shapes municipal election pledges

OTTAWA · A massive storm that flooded thousands of Ottawa basements on Canada Day is now a central issue in the city's municipal election. The July 1 event dropped as much as 167 millimetres of rain in the city's southwest corner, overwhelming drainage systems and prompting more than 7,000 flood reports. The localized deluge was so intense that Environment and Climate Change Canada's regional monitoring system did not record it as an extreme weather event. All four leading candidates for mayor have now promised action to protect residents from future flooding.

City staff admitted the sudden rainfall overwhelmed neighbourhood drainage systems. The storm closed roads, downed power lines and contributed to Ottawa's wettest summer on record. Many residents have spent months dealing with ruined furniture, mould and complex insurance claims. "The real surprise isn't the storm. The surprise is that we are still treating these events as unexpected rather than preparing for the climate reality we know is already here," Community Action for Environmental Sustainability Ottawa said in a statement after the storm.

Mayoral candidate Jeff Leiper, a three-term city councillor, called the Canada Day storm another example of extreme weather energized by climate change. "On the whole, we have a good idea that we need to make our infrastructure considerably more resilient to more extreme storms," he told The Narwhal. "But we are not at the point where we have funded making our infrastructure appropriately resilient." Leiper has announced a $50-million plan to fix sewers in the three hardest-hit wards, increase grants for impacted residents and create a team to help with insurance claims.

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Incumbent Mayor Mark Sutcliffe, running for a second term, plans to prioritize $500 million in funding for infrastructure that makes communities stronger against extreme weather. A campaign spokesperson said Sutcliffe would make "all necessary investments" to fix infrastructure in areas directly impacted by the July 1 storm. The plan includes upgraded storm sewers and ditches, with priority given to flood-prone communities. The spokesperson disputed Leiper's assertion about funding, noting Ottawa's 2026 budget includes $94 million in capital contributions "that apply a climate lens to projects across the city."

Candidate Neil Saravanamuttoo, an economist, said the flooding was a wake-up call. "Weather events that we thought were once-in-a-century events are now happening every few years, and we are seeing the significant cost that flooding can impose on Ottawa households," his platform states. His plans include replacing sewers, creating stormwater ponds, planting trees and organizing city-run neighbourhood retrofits to help residents access federal rebates. Another contender, business owner Alex Lawson, said he would review the city's disaster response process and examine sewer maintenance records street by street. A spokesperson for Lawson's campaign, Laura Kurkimaki, said Lawson believes the city's emergency response plan puts "too much pressure on volunteer organizations." Leiper said he felt the city's response to the flooding was "far too slow" and that as mayor, he would have visited the flooded sites earlier and more frequently. Sutcliffe's campaign disputes this, saying the mayor and his office spoke with city staff and emergency officials the day of the storm.

The issue also reached the provincial level. At an Oct. 6 committee meeting, NDP MPP Chandra Pasma, whose riding includes the affected area, criticized the provincial response. "Why was no help sent to Ottawa, despite the city’s request to actually help people clean out their homes and make them safe to live in again?" she asked. Ontario Emergency Preparedness Minister Jill Dunlop said the province received a request for assistance on July 9 and worked with partner organizations after that. A 2020 report commissioned by the City of Ottawa and the National Capital Commission predicted climate change will bring "more intense precipitation," increasing flood and stormwater overflow risks. The report noted that "municipal planning must account for climate impacts, including future flood risks." The lopsided impact of the July storm demonstrates how climate change does not affect everyone equally, with some neighbourhoods more exposed due to factors like older sewer systems.

With files from The Narwhal