Deep sinkhole opens in north Edmonton after weekend thunderstorms

Edmonton is grappling with the aftermath of severe weekend thunderstorms that unleashed damaging winds, large hail, and torrential rain. The storms, described as "typhoon-like conditions" at one point, caused widespread issues including downed trees, flooded streets, and damaged buildings.

One of the most dramatic consequences is a sinkhole that opened up in the north Edmonton neighborhood of Lauderdale. Measuring about 12 feet by 12 feet and a staggering 35 feet deep, the sinkhole appeared after the storms passed and floodwaters receded. City crews responded quickly to secure the area and began stabilization and repair work.

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Edmonton’s drainage system is designed to manage significant rainfall and protect communities across the city. However, when exceptionally intense rainfall occurs over a short period of time, particularly following repeated storms and already saturated ground conditions, the volume of water entering the system can temporarily exceed available capacity.

EPCOR, the city's utility provider, explained that while Edmonton's drainage system is designed for significant rainfall, the intensity and duration of the recent storms, coupled with saturated ground, temporarily overwhelmed its capacity. The specific sinkhole location is not directly related to ongoing flood-mitigation work in the area, according to EPCOR, but is likely a consequence of the extreme weather.

The sinkhole is just one of several problems the city is addressing after the storms, which also led to temporary closures of some recreation centers and the Telus World of Science.

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We acted quickly to secure the site to ensure public safety, and our work is ongoing to advance a repair of a large pipe that conveys flows to the wastewater treatment plant.