Edmonton's stormwater infrastructure is managing the heavy rainfall that has drenched the city since Sunday, according to EPCOR. The utility reported that at least 70 millimetres of rain have fallen, but the system is designed to absorb water slowly and prevent overwhelming surges.
Yellowhead Trail Reopens After Flooding
Two westbound lanes under the CN Rail bridge between 121 and 124 Street on Yellowhead Trail reopened Tuesday morning after being closed Monday night due to flooding. EPCOR attributed the closure to a nearby construction site where exposed soil lacked vegetation, increasing runoff. The utility responded to over 85 calls about ponding and catch basins on Monday.
System Performing Well
Mayor Andrew Knack stated Monday that no stormwater system failures were reported. EPCOR spokesperson Jill Baird confirmed this, noting that while the rainfall is significant, capacity issues have not arisen. “Our infrastructure near Yellowhead Trail and 121 Street was working on June 1,” Baird said. “Construction sites can be more susceptible to flooding due to erosion control measures that redirect flow from catch basins.”
The city’s $1.6 billion infrastructure upgrades, approved in 2019, are designed to handle chaotic weather. Baird explained that pooling is normal, as the system uses stormwater ponds to hold excess water and release it gradually. “Residents should keep a safe distance from these ponds, as they are doing critical work now,” she added.
Ongoing Precautions
Alberta Forestry and Parks issued a high streamflow advisory for the North Saskatchewan River, projecting water levels could rise by up to two metres, with minor flooding possible in low-lying areas. Environment Canada ended its “Yellow” rainfall warning but forecasts intermittent rain through next Monday. EPCOR advises property owners to ensure drains are clear and to stay away from stormwater ponds.
