City officials are discussing accelerating a plan to improve storm-water infrastructure after record-breaking rainfall in June and July led to flooding and damage in Edmonton. According to Environment Canada, over 500 mm of rain fell during this period, putting significant strain on the city's aging storm-water network. EPCOR, the city-owned utility provider, is considering speeding up work on a 20-year, $1.6-billion plan to upgrade infrastructure and minimize flood risk. The plan has been ongoing since 2019 but was previously expected to be implemented over several decades.
Written by the local model on 2026-08-25,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
In June and July, Edmonton experienced a series of floods and extreme weather events due to over 500 mm of rain, the highest amount in decades, according to *Environment Canada*. The city's utility provider, EPCOR, struggled to keep up with the demand, citing minimal recovery time between storms. In response, the City of Edmonton's utility committee has been discussing ways to improve communication and transparency during emergencies like this one. Mayor Andrew Knack noted that it's better to over-communicate than under-communicate in situations like these, where people are looking for information about what's happening. EPCOR is now considering accelerating its storm-water resilience plan to mitigate the effects of future extreme weather events.
Written for “Edmonton Storm-Water Resilience Plan” on 2026-08-31,
grounded in this article and the 0 other(s) covering the same event.
The summer of 2026 will be remembered for record-breaking rainfalls and multiple storms a week throughout June and July.
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summer → remember → June
Close to a month since the onslaught of extreme weather calmed down, city-owned utility provider EPCOR provided a verbal update to the City of Edmonton’s utility committee about how it managed its response to the series of floods and other issues that emerged during the storms.
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that → calm → storms
“I think the biggest takeaway from today was around communication and transparency,” said Keren Tang, city councillor for Ward Karhiio.
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Tang → think → Karhiio
Edmonton Mayor Andrew Knack agreed.
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Knack → agree → ?
“It’s better to over-communicate in situations where you’re getting things like unprecedented weather, than to under-communicate and leave people feeling like they have to try and seek out that information
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they → communicate → information
,” Knack said.
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Knack → say → ?
On Monday, EPCOR said the July storms were unique and extreme in nature, straining infrastructure with minimal recovery time between storms.
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storms → say → storms
According to Environment Canada, the city received more than 500 mm of rain over June and July — the highest volume in decades.
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city → accord → decades
Multiple storms a week left the groundwater table so saturated that it stopped absorbing, sending more runoff than normal into the storm-water system — which then struggled to keep up.
EPCOR said a lengthy stretch of dry weather was needed to allow the system to recover.
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system → leave → weather
The weather highlighted weaknesses in Edmonton’s aging storm-water network.
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weather → highlight → network
Last month, Knack admitted flood resiliency should have been started decades earlier as what used to be one-in-100-year floods are now more like one-in-10-year floods.
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floods → admit → floods
“A lot of our infrastructure held up the way we had envisioned it to,” Knack said on Monday.
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Knack → hold → Monday
“Not every area held up the way we wanted it to.”
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it → hold → ?
Scores of homes in the city sustained water damage from sewage backups or overland flooding.
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Scores → sustain → backups
Major roads like Whitemud Drive, Yellowhead Trail, Groat Road and the interchange of Connors Road and the Low Level Bridge also turned into rivers and lakes.
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roads → turn → rivers
“We’re going to look closely at our infrastructure and those cases, and see how over time we can make improvements to help mitigate those risks,” said Craig Bonneville, vice-president of planning, projects and engineering at EPCOR.
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Bonneville → go → EPCOR
EPCOR and the city are looking at accelerating work on Edmonton’s storm-water system improvements, which is part of a 20-year, $1.6-billion storm-water resilience plan to upgrade infrastructure and minimize the flood risk.
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which → look → risk
The plan, launched in 2019, is now in its seventh year.
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plan → launch → year
“It doesn’t happen overnight, it does take time to implement,” Tang said.
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Tang → happen → time
“So if we want to implement all in one go, there’s huge financial, huge community impact that we have to keep in mind.”
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we → want → mind
The effects of the July storms took a heavy toll on several northwest Edmonton neighbourhoods, where a major road in and out of the area was washed away.
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road → take → area
The July rains caused Horseshoe Creek to overflow and erode the banks around its culvert, leading to a stretch of 137 Avenue crumbling into the deep trench created by the floodwaters.
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stretch → cause → floodwaters
Big Lake-area residents were already waiting for EPCOR to expand the creek’s culvert to help with drainage.
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EPCOR → wait → drainage
Residents say erosions concerns were raised a few years ago.
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concerns → say → ?
“As a utility ratepayer, you assume Epcor will step up and do the right thing — and in my opinion, they didn’t do that,” said Raf Tenderenda with the Big Lake Community League.
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Tenderenda → assume → League
The road remains closed because of the washout, limiting access to the Starling and Hawks Ridge communities.
“Now we’re king of thinking, is the road going to be closed for the whole year?
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road → remain → year
That’s kind of frustrating to see, the lack of action in the last two months — let alone the last two years.”
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That → ’ → months
Bonneville said the nature of the storm events Edmonton experienced were unpredictable — and to a degree, unprecedented — and simply overwhelmed the existing infrastructure in Big Lake.
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Edmonton → say → Lake
The city has spent about $350 million so far on flood resiliency projects, including dry ponds and maintenance work on pipes and manholes.
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city → spend → pipes
