The Springbank Off-Stream Reservoir is now operational. The $849-million project sits on Treaty 7 land in Rocky View County, 15 kilometres west of Calgary. Construction began in 2022 and was completed this year.
Alberta Transportation and Economic Corridors Minister Devin Dreeshen said the reservoir will protect Calgary and surrounding areas from major floods.
"With flood season now upon us, Calgary and southern Alberta can rest assured that they will be protected from future large-scale floods like that of 2013," Dreeshen said in a statement Wednesday. "SR1’s innovative design will ensure people, communities and businesses are buffered from the most devastating physical and economic impacts of major floods."
The province says SR1 is a dry off-stream reservoir that will divert water from the Elbow River during flood events and release it back after the flood risk has passed. It is designed to operate in coordination with the Glenmore Reservoir and other Calgary-area infrastructure.
Environment and Protected Areas Minister Rebecca Schulz said SR1 will help shield critical infrastructure, homes and businesses.
"The Springbank Off-Stream Reservoir, which is now operational, will help reduce flood risks and protect lives, homes, businesses and the critical infrastructure we all rely on for many years to come," Schulz said.
SR1 has a stated capacity of 70.2 million cubic metres, which the province says is equal to about 28,000 Olympic-sized swimming pools. It includes a 4.7-kilometre diversion channel, 24 metres wide, and a 3.8-kilometre earthen dam standing 29 metres high.
The province said 5.2 million cubic metres of dam infill and 5.6 million cubic metres of excavated earth were used during construction.
Calgary Mayor Jyoti Gondek said the project strengthens regional preparedness.
"The completion of SR1 means we are better prepared, more resilient and actively protecting people, property and prosperity," Gondek said. "I’m proud to see this collaborative investment in long-term safety and sustainability for our region."
The 2013 floods caused more than $5 billion in damage, displaced over 80,000 people and killed five, according to the province.
The total estimated cost of SR1 is $849.4 million, including $680.9 million in provincial funding and $168.5 million in federal contributions.
Mitigation and monitoring plans were developed for fish habitat, air quality, groundwater, wildlife and vegetation. Indigenous monitors were present during construction, and a land use plan was created following engagement with First Nations.
Forestry and Parks Minister Todd Loewen said the project will also protect the natural habitat.
"This flood mitigation measure will ensure critical habitats are protected, meaning fish and wildlife populations in the region can continue to thrive, while also protecting the outdoor spaces Albertans hold dear," Loewen said.
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