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Why Barriers

The proposed flood barrier is a foundational piece of our strategy to improve Calgary’s flood resilience and improve mitigation efforts in riverfront communities like Bowness.

In the long term, these barriers will work in collaboration with the Province’s existing agreement with Trans Alta for modified operations to the Ghost Reservoir, as well as any upstream reservoir that the Province may build in the future. Together these measures will help to significantly decrease the impact of large flood events such as the 2013 flood.

In the short term, the barriers will immediately increase community level flood protection and reduce the impact of the smaller, more frequent flood events that we’re predicting as a result of climate change.

Centre Street Bridge Improvements 

Other options considered

Centre Street Bridge Improvements
1. Adjacent to the riverbank and high enough to be 0.5 m above the 1:20 flood level

Centre Street Bridge Improvements
2. Adjacent to the riverbank with barrier segments for 1:20 (blue), 1:100 (purple) and 1:200 (green) flood levels.

Centre Street Bridge Improvements
3. 1:20 barrier inland from the river or along Bow Crescent.

Centre Street Bridge Improvements
Various flood levels