Calgary Begins 2026 Flood Season with New Sunnyside Barrier Protecting Riverfront Communities

The City of Calgary has officially entered the 2026 river flood season with a major milestone in its flood protection efforts: the new Sunnyside Flood Barrier is now operational, significantly improving safety for the communities of Sunnyside and Hillhurst.

Flood season in Calgary typically runs from mid-May through mid-July, the period when river flooding is most likely due to mountain snowmelt and heavy rainfall upstream. City officials say annual preparations are complete, and crews are monitoring river conditions, weather forecasts and mountain snowpack around the clock.

According to city officials, while snowfall in the Rocky Mountains was above average this winter, that alone does not indicate a high flood risk. Heavy rainfall in the watershed remains the most significant factor in major flooding events.

Sandy Davis, Calgary’s River Engineering Leader, explained that snowmelt usually contributes less than 20 per cent of river flow during floods. Strong snowpack, she said, is generally beneficial because it supports healthy water levels in the Bow and Elbow rivers throughout the spring and summer.

The city says it is fully prepared to respond if severe weather increases flood threats, with emergency teams ready to protect residents, infrastructure, essential services, the environment and the local economy.

A major achievement this year is the functional completion of the Sunnyside Flood Barrier, a 2.4-kilometre system designed to shield Sunnyside and Hillhurst from a one-in-100-year flood event.

The project includes permanent concrete and metal flood walls, as well as removable barriers that can be installed across roads and pathways during emergencies.

In addition to flood protection, the project features enhancements to public spaces along the river, including improved pathways, seating areas and community gathering spaces, while preserving historic memorial features important to the neighbourhood.

Although the barrier is already in service for the current flood season, landscaping and restoration work will continue throughout the year, with final completion expected in fall 2026.

Calgary’s flood resilience has also been strengthened by the recent completion of the Springbank Reservoir, which provides additional protection along the Elbow River.

City officials remind residents that flooding can never be eliminated entirely and encourage property owners to understand their flood risk, prepare emergency plans and stay informed through official alerts and river condition updates.

Residents are also urged to use caution near riverbanks during the spring, as fast-moving water can cause erosion and unstable ground conditions.

With new infrastructure in place and monitoring systems operating continuously, Calgary enters the 2026 flood season with its strongest flood defenses to date.

Courtesy: The City of Calgary Newsroom