River flooding in Calgary
Conditions for May 15: Normal spring flow on Bow and Elbow River
24-hour river forecast
24-hour river forecast
Heading into the 2025 spring/summer season, snowpack is generally below normal. However, we can’t draw any conclusions from that alone about whether or not we’ll get a flood event this year. It is important to remember that river flooding in Calgary is primarily caused by rain events, with melting snowpack contributing a small amount to flood flows.
The Glenmore and Ghost Reservoirs have been drawn down to their target levels. Our teams will be monitoring the rivers 24/7, keeping an eye on any large rain systems that can cause river flooding, and posting conditions daily here
This year, significant infrastructure investments since 2013 have reduced Calgary’s flood risk by 70 per cent.
- Calgary’s Elbow River communities are now protected from 2013-sized floods, thanks to the new Springbank Off-Stream Reservoir (SR1) located along the Elbow River, upstream of Calgary. The ‘dry' reservoir will only be filled during floods, and will work together with the Glenmore Reservoir to significantly increase the overall floodwater storage capacity on the Elbow River.
- Work continues on the Sunnyside Flood Barrier project as part of the Memorial Parkway Program. Construction on the flood barrier is underway and is anticipated to be complete in time for the 2026 flood season.
Summary of conditions
- There is no anticipated risk of river flooding for the next 5 days, based on current forecasts.
- Weather forecasts predict average temperatures (5°C to 8°C) with minimal precipitation (< 6 mm) through Friday. The current weather forecasts are predicting between 15 – 25 mm of precipitation in the Elbow and Bow basin over the next five days.
- Streamflows in Calgary are expected to remain steady through the weekend, rising gently early next week due to increased snowmelt in both the Bow and Elbow basins.
How we’re responding
How we’re responding
- No impacts at this time.
- We’re continuing to monitor river conditions.
- In preparation for flood season, The City has completed exercises and testing of infrastructure like river outfalls, lift stations and temporary barrier deployments.
What you can do
What you can do
Direct rainwater away from your home
Eavestroughs and extensions should drain at least 1.5 metres (5 feet) away from your and your neighbours home and onto a landscaped area so the water can soak into the ground.
Help us keep an eye on storm drains
During intense rainfalls, storm drains can be temporarily overwhelmed and it may take some time for water to drain. In some areas of the city, we’ve installed a device in the storm drains to manage how fast water flows into the pipes from the storm drain that helps prevent the system from becoming overwhelmed with stormwater, avoiding water backups into basements or flooding into houses, garages and businesses.
If you see water pooling around storm drains and it hasn’t drained within 90 mins, take a photo and submit it via the 311 app or online request. This will help City crews respond on a priority basis. If safety is a concern or water is entering a building, contact 311 immediately.
Stay informed
Stay informed
Weather and river conditions in Calgary can change quickly and without notice.
- Sign up for alerts.
- For real-time updates and advisories, see Alberta’s current river flow.
Next update: May 16, 2025
Conditions are updated daily in the morning, Monday to Friday (excluding stat. holidays) from mid-May to mid-July.
High river flow season is May 15 - July 15
Looking for updates?
Sign up for our e-newsletter to get the latest news on river conditions, tips and resources during high river flow season.
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Flood resources
We can’t prevent flooding entirely, and it can happen quickly with little or no warning. Protecting our community and citizens from flooding is a shared responsibility – we all have a role to play.
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View flood maps
Know your flood risk. Search for your property on our flood mapping tool to see if you are at risk for flooding.
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Prepare for flooding
Take steps to reduce flood damage to your home and ensure your family knows what to do if a flood happens. Find preparation resources on this page, including guides in Traditional and Simplified Chinese.
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Stay informed
Sign up for e-mail alerts and find a list of flood notification resources, including City of Calgary emergency notices.
Did you know?
Flooding can occur even during dry conditions.

Although Calgary has a dry climate, flooding is always possible. With our proximity to the mountains, we can experience unpredictable swings in the weather, from heavy rains leading to floods, to many weeks of dry temperatures and little rain leading to droughts.
Learn more about how we monitor and respond to the conditions and how you can help:
Flood mitigation projects
Calgary is better prepared today for flood events like the one in 2013. We’ve taken steps to reduce Calgary’s exposure to flood damage that have reduced our flood risk by 70 per cent as of 2025.
Springbank Off-Stream Reservoir
Calgary’s Elbow River communities are now protected from 2013-sized floods, thanks to the new Springbank Off-Stream Reservoir (SR1) located along the Elbow River, upstream of Calgary. The ‘dry' reservoir will only be filled during floods, and will work together with the Glenmore Reservoir to significantly increase the overall floodwater storage capacity on the Elbow River.
Learn more about our short and long-term actions.