Hydro Météo, a non-governmental agency that monitors water levels, is keeping a close eye on the province's waterways with lots of rain in the forecast for the next few days.
The Acadie River in the Montérégie has passed its threshold for minor flooding, a spokesperson said, so some fields and parts of roads could be flooded in the Carignan area as a result.
No homes are flooded as far as the agency knows.
The rain will taper off a bit Wednesday, but then another system is moving in on Thursday and Friday which will continue to soak the province. That system is expected to bring another 15 to 25 millimetres of rain
Transports Québec says a road in Mirabel was washed out early this morning due to the heavy rainfall.
Saint-Simon Road was shut down at 1 a.m. between Highway 50 and Saint-Rémi Road.
Officials aren't sure how long it will take for the road to reopen.
There is some damage to a culvert under the road that will be have to be repaired before it reopens to traffic.
Transports Québec also says Athelstan Road in Hinchinbrooke, south of Montreal, is closed between Lorn Street and Lost Nation Road because of flooding of the Châteauguay River.