Milder temperatures combined with heavy rainfall and thick ice has Emergency Measures Organization officials on flood watch along New Brunswick waterways.
"We're looking at some considerable runoff for tomorrow and, obviously, that will promote the degradation of the ice cover and potential, there's a risk of ice movement and possibly ice jams and localized flooding," says Richard Keeley of New Brunswick River Watch.
There are now seven ice jams positioned along the Nashwaak, Kennebecasis and Miramichi rivers.
Two years ago, a jam caused the St. John River to run over its banks, flooding low-lying areas in Perth-Andover.
Reg Grant’s garage was inundated by more than a metre of water. He says he is hoping to get through this spring without an ice problem.
"When the ice jams and creates its own dam, that's when we get problems,” says Grant. “If we could get the ice out of the river, you know, I think we might be alright here. The melt has gone pretty good, we've already lost a fair amount of snow, but there's a lot more to go."
While there is concern in the north, the immediate focus could be on the south, with up to 50 millimetres of rain expected to fall in areas already seeing water worries.
With rain and milder temperatures in the forecast, officials are hoping for some relief Wednesday evening, when temperatures are expected to drop.
“That's what we like about the month of April, you have those fluctuations in temperature and it slows it down after a couple of days of warm weather," says Keeley.
EMO says there is a lot of snow left to melt, so concerns about ice jams and flooding will continue for some time.
With files from CTV Atlantic's Andy Campbell
