Average score flood in Ontario, Canada

Score flood description

A rating from 0 to 10 of how often the area around a property floods, where higher numbers mean the surrounding area floods less often. It reflects the area, not the individual home.

A low score does not always mean this home will flood. It might sit on higher ground and stay dry, but a nearby flood plain can still affect it a great deal, because flooding damages surrounding roads, utilities, and services and drags on value and insurance across the whole area. Use a low score as a prompt to look into whether this particular home is genuinely at risk.

  • 0-2: Very high flood exposure - The surrounding area floods readily
  • 3-4: High flood exposure - The area sees significant flooding
  • 5-6: Moderate flood safety - Some flood-prone conditions nearby
  • 7-8: High flood safety - The area floods only rarely
  • 9-10: Very high flood safety - The surrounding area is very unlikely to flood

In Canada this is the worse of Natural Resources Canada's flood susceptibility and the Joint Research Centre's river flood depths for floods of 20, 100 and 500 years.

Average score flood for residential properties in Ontario

MedianMeanMode
From 5,630,783 homes
From 5,630,783 homes
From 5,630,783 homes

Data updated November 14, 2026

Average score flood for residential for cities in Ontario

LocationMedianMeanMode
Abitibi 70
From 2 homes
From 2 homes
From 2 homes
Acton
From 3,566 homes
From 3,566 homes
From 3,566 homes
Addington Highlands
From 992 homes
From 992 homes
From 992 homes
Adelaide-Metcalfe
From 1,320 homes
From 1,320 homes
From 1,320 homes
Adjala-Tosorontio
From 1,359 homes
From 1,359 homes
From 1,359 homes
Admaston/Bromley
From 59 homes
From 59 homes
From 59 homes
Agency 1
From 4 homes
From 4 homes
From 4 homes
Ajax
From 40,608 homes
From 40,608 homes
From 40,608 homes
Akwesasne (Part) 59
From 229 homes
From 229 homes
From 229 homes
Alban part A
From 277 homes
From 277 homes
From 277 homes

All cities in Ontario