June Storms Cost Canada $1.1 Billion in Insured Damage: A Homeowner's Guide to Flood Risk, Coverage Gaps, and Filing a Claim

What This Means for You

A single number should catch every Canadian homeowner's attention this week: more than $1.1 billion in insured damage from storms that hit in early-to-mid June, according to the Insurance Bureau of Canada. That figure covers only two events — Prairie storms on June 9–10 and Montreal-area flooding on June 20–21 — and it doesn't include the wildfire and severe-weather claims still being tallied from July. Based on our review of how overland flood coverage actually works in Canada (it's newer, optional, and far more limited than most homeowners assume), here's what to check in your own policy right now, regardless of whether your home was directly affected this summer.

If Your Home Was Damaged in a Recent Storm or Flood:

File your claim within the timeframe your insurer specifies, and document everything before you clean up. Photograph or video every affected room, damaged item, and visible water line before you move or discard anything. Keep receipts for any emergency mitigation you pay for yourself (a plumber to stop active water intrusion, a rented pump), since most policies reimburse reasonable emergency expenses even before an adjuster visits.

Understand the difference between "overland flood" and "sewer backup" coverage — insurers treat them as separate add-ons. Overland flood coverage, which pays out when water from a river, lake, or heavy rain enters your home from ground level, is a relatively recent addition to the Canadian market and is not automatically included in a standard homeowner's policy. Sewer or water backup coverage, which pays for water entering through drains or sewers during a storm, is a different rider entirely. If you don't know which of these you have — or whether you have either — call your broker this week and ask them to read your declarations page to you line by line.

If you were told you're in a "high-risk" zone and denied overland flood coverage, ask about mitigation-based alternatives. According to Insurance Bureau of Canada guidance, roughly 10% of Canadian households now sit in a flood-risk category high enough that private overland flood insurance isn't available to them at any price. If that's your situation, ask your municipality about grants for backwater valves or sump pumps, and ask your insurer whether installing either would change your eligibility at renewal.

If You Live Near a River, Lake, or in a Known Flood-Prone Area:

Check your flood risk using a free federal tool before your policy renews. The federal government's Flood Risk Finder is being rolled out through provincial partnerships; ask your municipal emergency-management office whether your province has opted in, and separately check whether your municipality publishes its own floodplain maps (most do, searchable by address).

Get a written, itemized coverage summary from your broker — not a verbal assurance. "You're covered for water damage" is not a useful answer. Ask specifically: Does this include overland flood? What is the dollar limit? Is there a separate deductible for flood claims versus other claims? Many flood riders carry lower coverage caps than the rest of your policy, which matters enormously if you have a finished basement.

Consider a sump pump and backwater valve even if you can't get full flood coverage. These typically cost $1,500–$4,000 installed, depending on your home's plumbing layout, and several municipalities (including areas of Ontario and Quebec affected by recent flooding) offer partial rebates. A backwater valve specifically prevents municipal sewer water from backing up into your basement during heavy rain — the single most common cause of urban flood claims.

For All Canadian Homeowners and Renters:

Renters: confirm whether your tenant's insurance includes any water-damage protection for your belongings. Your landlord's building insurance does not cover your possessions. A basic tenant's policy with water-damage coverage typically costs $20–$40 a month and is worth the cost if you live below ground level or in a basement unit.

Reassess your home inventory now, before the next event, not after. A simple phone-video walkthrough of every room, saved to cloud storage, dramatically speeds up claims processing and reduces disputes over what was damaged and its condition beforehand.

Example scenario: A homeowner in a Montreal-area neighbourhood affected by the June 20–21 flooding, with a finished basement worth roughly $40,000 in renovations and belongings, discovers their policy has overland flood coverage but with a $20,000 cap and a separate $2,500 deductible. Based on our review of typical claims patterns, that homeowner would be responsible for approximately $17,500 to $22,500 of the loss out of pocket — a gap large enough that checking your specific coverage limit today, rather than after a flood, is the single highest-value five minutes you can spend on this issue.

The News: What Happened

According to the Insurance Bureau of Canada, severe storms that swept across Manitoba and Saskatchewan on June 9–10 caused more than $728 million in insured damage, while flooding in Montreal and the surrounding area on June 20–21 caused more than $409 million in insured damage — a combined total exceeding $1.1 billion, as reported by Global News and via Newswire. The Prairie storms brought tornadoes, hail, damaging winds, and flash flooding to communities across both provinces, according to CBC News. The Montreal-area flooding followed intense rainfall that overwhelmed municipal drainage systems, according to industry trade coverage from Canadian Underwriter.

The Insurance Bureau of Canada has separately said that flood and water-related insured losses have increased by more than 350% compared to the average of the previous two decades, and that approximately 10% of Canadian households now face flood risk high enough that private overland flood insurance is unavailable to them. IBC Vice-President of Federal Affairs Liam McGuinty said, according to a Newswire release, that "from spring thaw to intense rainfall events, flooding is becoming more frequent, more severe and more costly in communities across Canada." The organization is calling on federal, provincial, and municipal governments to restrict new home construction in high-risk flood plains, invest in stormwater and wastewater infrastructure upgrades, and expand home-retrofit rebate programs.

Analysis: Why This Matters

Based on our analysis of the reporting, the significance of this figure isn't just its size — it's that it represents only two discrete June events, arriving on top of an already active 2026 wildfire and severe-weather season that has generated separate, additional insured losses in Ontario, Manitoba, and British Columbia through July. Insurers price risk based on multi-year loss trends, and a year with several billion-dollar-plus events in quick succession typically shows up in the following year's renewal notices, not just in the affected regions but nationally, as insurers spread catastrophic-risk costs across their broader books.

Historical Context:

Canada's private overland flood insurance market is younger than most homeowners realize — it only became widely available around 2015, well after most other property perils were standard. That means many long-tenured homeowners, particularly those who haven't shopped their policy in several years, may be carrying coverage assumptions that predate flood insurance being available to them at all.

What Happens Next:

Expect renewal notices in flood-affected regions to reflect higher premiums or, in the highest-risk postal codes, non-renewal of overland flood riders specifically — even where the rest of the policy remains available. Based on the pattern in similar prior events, expect continued advocacy from IBC toward a possible national flood insurance program modeled on approaches used in the United States and United Kingdom, though no such federal program currently exists in Canada.

Your Action Plan

Immediate (This Week):

• Call your insurance broker and ask them to read your policy's flood and water-damage coverage line by line, including dollar limits and deductibles.
• Photograph or video-walk through your home for a documented inventory, saved to cloud storage.
• If you were affected by June or July flooding and haven't filed a claim, do so now and keep all receipts for emergency mitigation expenses.

Short-term (This Month):

• Check whether your municipality publishes floodplain maps for your address, and compare that against your current coverage.
• Ask your municipality about rebate programs for backwater valves or sump pumps.
• Renters: confirm your tenant's policy includes water-damage protection for belongings.

Long-term (This Year):

• Reassess your flood coverage annually at renewal, not just after a loss — insurers are actively revising flood-risk pricing this year.
• If you're in a high-risk zone with no available overland flood coverage, budget for mitigation upgrades (backwater valve, sump pump) that may improve future eligibility.
• Track whether your province opts into the federal Flood Risk Finder tool, which provides free address-level risk information once available in your area.

Other Perspectives

Insurance Industry View:

The Insurance Bureau of Canada, representing private insurers, has called on all levels of government to treat this year's storms as "a clear warning sign" and accelerate flood-mitigation infrastructure spending, arguing that without action, flood risk will continue to outpace what private insurance alone can absorb.

Municipal and Government Perspective:

Municipalities affected by the June flooding, including areas around Montreal, have faced public pressure over aging stormwater infrastructure; upgrading that infrastructure typically requires large, multi-year capital budgets that compete with other municipal spending priorities.

Affected Homeowners:

Coverage of the Montreal-area flooding has noted disputes and, in some cases, lawsuits from residents who discovered after the fact that their policies either excluded overland flood damage or capped it well below their actual losses — underscoring why confirming coverage before an event, not after, matters.

Consumer Advocates:

Advocacy voices within the insurance-review space have pointed to the roughly 10% of households now unable to obtain flood coverage at any price as evidence of a widening protection gap that disproportionately affects lower-income and rural homeowners in flood-prone areas.

Note: Including multiple perspectives doesn't imply all views are equally valid, but ensures readers can make informed judgments.

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Corrections Policy

We strive for accuracy. If you find an error in this analysis, please email us at [email protected]. We will promptly investigate and correct any factual inaccuracies.

Updates:

• No corrections to date (as of July 19, 2026).

Sources

• Insurance Bureau of Canada. "June storms in Manitoba, Saskatchewan and Montreal cause over $1.1 billion in insured damage." Newswire.
• Global News. "June storms result in more than $1.1B in damages across Canada."
• CBC News. "Prairie storms caused at least $728M in insured damage: Insurance Bureau of Canada."
• Canadian Underwriter. "Montreal water claims taper as northern Ontario wildfire claims emerge."
• Insurance Bureau of Canada. "Insurance Bureau of Canada Urges Governments and Canadians to Prepare as Flood Season Continues." Newswire.
• Insurance Business Magazine. "Insurance Bureau of Canada calls for stronger flood preparedness amid rising risks."