Many New Brunswickers living near rivers and streams are watching today’s rain to see if it prompts ice jams or flooding in many low-lying areas.

After earlier expecting some rivers to reach the flood stage on Wednesday and Thursday, River Watch officials now forecast those rivers to remain below flood stage.

Tuesday's water level of the Nashwaak River at Durham Bridge was 206 centimetres below flood level at 7 a.m. Tuesday, but that is forecast to increase to within 40 centimetres of flood level at 7 a.m. on Wednesday. The forecast for Thursday puts the Nashwaak level at 80 centimetres below flood stage.

Officials are also watching the Kennebecasis River for possible flooding. The forecast currently calls for it to peak at about two metres below flood stage at 7 a.m. on Wednesday.

Environment Canada issued an alert indicating that as much as 45 millimetres of rain could fall in parts of New Brunswick by Wednesday morning. Areas along the Fundy coast are expected to get the most rain, according to the forecast.

Nashwaak River concerns

Melting snow and heavy rain are causing concerns about possible flooding along the Nashwaak river. (CBC)

Ice jams that formed along the Nashwaak River in January could complicate matters further.

However, the Nashwaak River isn't the only area of concern with this week's rain.

Officials are also warning people about the Kennebecasis River at Hillsdale and Southwest Miramichi River below the Doaktown Bridge and at Norrad's Bridge.

The provincial government is expecting water levels to peak on Wednesday or Thursday.

People are warned to be on the lookout for ice jams and rising water.

Saul Boudreau understands how quickly the river can rise.

Boudreau said his parents’ home near the Tay Bridge was cut off from the road in 2010 and supplies had to be delivered by canoe.

“The field here is three levels and it came all the way up into the backyard — the first time since we moved here — and it turned the house into an island,” Boudreau said.

Ron Goodine, who has lived in Durham Bridge for 70 years, said he’s seen a lot of floods and this year could be bad.

“She's unpredictable, it could go either way,” Goodine said.