Ottawa was hit with a stunning 118 mm of rain on Canada Day, turning streets into rivers and leaving thousands of homes and businesses without power just as the city geared up for its biggest holiday of the summer.
A Holiday Washout
Instead of packed patios and lakeside picnics, residents spent much of July 1 watching storm drains struggle to keep up. The rainfall total is a significant chunk of what Ottawa typically sees in an entire month, and it fell in a matter of hours, overwhelming the city's stormwater systems in several neighbourhoods.
Roads across the city became impassable as water pooled faster than it could drain. Underpasses and low-lying streets — often the first to flood during heavy storms — saw the worst of it, with some drivers forced to abandon vehicles stalled in deep water.
Power Outages Across the City
The storm's intensity also knocked out electricity for a large number of Hydro Ottawa customers. Downed lines and waterlogged equipment were the likely culprits, with crews dispatched to assess damage and restore service as quickly as possible. For residents who had planned Canada Day barbecues or gatherings, the outages added another layer of disruption to an already washed-out holiday.
Impact on Canada Day Festivities
Ottawa's Canada Day events, which typically draw huge crowds downtown and along the Ottawa River, were significantly affected by the weather. Outdoor celebrations, including fireworks displays and public gatherings, faced disruptions or delays as organizers monitored the storm and prioritized public safety. Many families who had made plans to head downtown for the festivities instead found themselves sheltering at home, watching the rain come down in sheets.
Why This Storm Stood Out
While Ottawa is no stranger to summer thunderstorms, a rainfall total north of 100 mm in a single day is unusual even by the city's standards. Storms of this magnitude put real strain on aging infrastructure, particularly in older neighbourhoods where stormwater systems weren't built to handle such intense, concentrated rainfall. Flooded roads and power outages during a major storm are a reminder of how quickly extreme weather can upend even the most anticipated day of the summer.
What's Next
City crews and Hydro Ottawa were working through the aftermath to clear flooded roads and restore power to affected areas. Residents are advised to avoid driving through standing water and to report downed lines or ongoing outages directly to Hydro Ottawa.
Source: CP24
