Rising water levels in the Châteauguay River have flooded several businesses in downtown Huntingdon, south of Montreal.

Municipal authorities are working to dislodge the jam blocking the river, as it threatens to flood Huntingdon's downtown streets.

Meanwhile, residents in the town of Saint-Clet, located southwest of Montreal, are mopping up after a flood that forced about 100 homes to be evacuated on Tuesday.

The flooding was at its worst on Tuesday, after multiple days of mild temperatures combined with heavy rains.

Most Saint-Clet residents were able to return to their homes on Wednesday.

“The melt of the snow took place faster than we expected and the rain, the water all came here, because other municipalities are higher than us,” said Saint-Clet Mayor, Daniel Beaupré.

flood saint clet

Rescue workers help evacuate local residents on tuesday after a spring flood in Saint-Clet, Quebec. (Radio-Canada)

According to the municipality, this is the worst flooding it has seen in the past 20 years.

The water was as deep as one metre in some places on Tuesday, and while the flooding receded overnight, the town isn’t back to normal quite yet.

Saint-Clet is one of several Quebec municipalities under flood watch, following the spring melt.

Hydro Metéo, an independent agency that monitors water levels in Quebec, has released flood warnings for the Laurentians, the Outaouais, the Lanaudière region, Québec City area, the Beauce and the Mauricie.

saint clet spring flood

The water was up to a meter deep in some parts of Saint Clet on Tuesday. (Radio-Canada)

"Milder temperatures and rain over the past few hours have generated enough runoff to increase water levels in some waterways in these regions," the agency said on Wednesday morning.

According to Hydro Météo, the increases are expected to continue into Thursday as temperatures rise and with more precipitation in the forecast for this weekend.