Parts of northern Ontario have been inundated with heavy rain, prompting a state of emergency in Wawa.
By Thursday, Pukaskwa had received 130 mm. Wawa got slightly less at 122 mm, but that was enough to wash out a section of the TransCanada Highway.
The town's main roadway has also been closed.
"Environment Canada issued rainfall warnings earlier this week due, in part, to a cold front," says Brian Dillon, a meteorologist at The Weather Network.
"The low pressure system tracked north eastward into the Hudson Bay, causing the storm system to stall over the area."
Officials are asking residents to avoid flooded areas.
Meanwhile, parts of the northeastern U.S. are bracing for heavy rainfall, courtesy of Hurricane Sandy.
Visit the Alerts section of the website to keep on top of watches and warnings across the country.