Local rivers are rising, but no overland flooding in Calgary communities expected

After a rather wet weekend, rain continues in our watershed and our rivers are rising quickly.  

In 24 hours, 80 to 100 mm of rain fell in the Bow and Elbow catchments, with up to 130 mm in specific locations. In Calgary, an average of 40 mm fell. Rain is forecast through tomorrow. River flows are expected to increase throughout the day and will remain elevated for a few days. 

While overbank river flooding is not expected in Calgary communities, Calgarians can expect to see localized areas of flooding next to rivers and creeks, closed pathways, and potential for basement seepage in some low-lying areas along the Bow River.  As such, the following advisories are in place:  

• Flood Warning on the Elbow River upstream of Calgary has been issued by The Province, in accordance with the operation of the Springbank Reservoir.
• High Streamflow Advisories on the Bow and Elbow Rivers through Calgary.
• Boating Advisory on the Bow and Elbow Rivers.  

City response 

Early this morning, the Government of Alberta started diverting flow from the Elbow River into the Springbank Off-Stream Reservoir, marking its first operational use since it was completed in 2025. Meanwhile, Glenmore and Ghost Reservoir levels have been positioned to store river water and reduce flows through Calgary. The City is in close communication with the Government of Alberta and TransAlta, to share the best available information.  

 Additional flood response measures in Calgary, such as the use of flood barriers (including reinstating the Montgomery flood barrier), or evacuations, are not anticipated at this time. City crews are also out checking stormwater outfalls / drainage systems; while staging may occur in some areas for quick deployment if needed, however pumping and outfall closures are not anticipated at this time. 

For more information and the latest updates, visit calgary.ca/flood. 

 Staying safe 

As high rivers also mean fast flow, increased debris and unstable banks, Calgarians are advised to keep safely away from rivers and creeks. Keep pets and children at a safe distance from the edge of the water.  

Before going out on the river (rafting, fishing, kayaking), check calgary.ca/watersafety to see if boating advisories are still in place. 

What Calgarians can do 

When the rivers and creeks rise in Calgary, stay away from the banks, including children and pets, as high flows can cause bank erosion and instability. Before going out on the river (rafting, fishing, kayaking), always check calgary.ca/watersafety. 

Direct rainwater away from your home. Eavestroughs and extensions should drain at least 1.5 metres away from your home onto a landscaped area where the water can soak into the ground. You should also check your sump pump and backflow valve if you have them, to ensure they are working properly.  

If you live in a low area prone to basement flooding, check your sump pump and backflow valve, and consider moving stored items to a higher level.  

Courtesy: The City of Calgary Newsroom