Flooding is possible in parts of Mississauga on Wednesday with as much as 40 millimetres of rain expected to fall on the city, officials say.

Heavy rain began Tuesday night and another round is expected on Wednesday afternoon, the City of Mississauga said in a weather notice to the community that was updated this morning.

“Mississauga is expected to see rainfall anywhere between 20-40 millimetres,” the city said. “Thunderstorms are also possible, which could cause lightning. Water levels in local waterways including creeks, rivers, ponds and lakes remain high, increasing the risk of additional flooding. With the ground still somewhat frozen and highly saturated with water, additional rain will be difficult for the ground to absorb.”

The weather notice goes on to say that in addition to flooding, the heavy rain could also lead to “fast-moving water and slippery banks and shorelines. For your safety, please avoid rivers, creeks, stormwater ponds and Lake Ontario, as water levels remain high.”

The city also urges residents to clear storm drains near driveways and in backyards of leaves and debris to reduce the risk of flooding. To report a problem with any storm drains, people are asked to call 311.

Officials also noted the city is monitoring local waterways and low‑lying areas in coordination with Credit Valley Conservation, which early Wednesday morning issued a flood warning statement.

That warning applies more specifically to communities in the northern part of the Credit River Watershed that include Caledon, Orangeville and Halton Hills. It remains in effect until Friday.

A flood warning indicates that flooding is happening or will happen soon while a flood watch/flood watch statement notes that flooding may happen in certain areas, city officials explained.

Meanwhile, a rainfall warning from Environment Canada includes a large portion of southern Ontario including Mississauga, Toronto, Brampton, Hamilton, Burlington, Oakville, Milton, Kitchener, Waterloo, Cambridge, Guelph, London, Niagara Falls, St. Catharines, Oshawa, Pickering, Ajax and communities across the Durham and Niagara regions.

(Cover photo: City of Mississauga X)


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