Water from Two Mountains Lake spilled onto Des Anges Street in Oka, Que., on Monday morning. (Melissa Kent/CBC)Quebec security officials were monitoring several rivers Monday as water levels rise because of melting snow and rainfall.

More precipitation is expected Monday, after a rainy weekend in the province, prompting officials to continue watching more than 20 rivers in the Montreal, Quebec City, Outaouais, Laurentians and Mauricie regions.

"We're going to have some rain in most of the regions, so we're going to have to monitor closely," said Lisa Carroll, a spokesperson for Quebec's Public Security Department.

About 20 residents living near the Matane River in the lower St. Lawrence were forced from their homes late Sunday night because of flooding.

Five homes around the Petite Nation River in the Outaouais were also evacuated.

In the greater Montreal region, the Rivières-des-Prairies river and Two Mountains lake are being monitored because of high water levels.

The Rivières-des-Prairies measured 23.6 metres Monday morning, "and at 23.7 metres we expect flooding for some people," said Yvan Leroux, a flood specialist for Quebec's public security department.

The river was flowing at 2,300 cubic metres per second, just shy of a 2,700-cubic metre threshold Leroux said will likely lead to breaching banks.

Residents in Hudson and Rigaud may also be affected by flooding, he said.

Southern Quebec was under a rainfall warning on the weekend, but colder temperatures kept melting snow at bay in most areas under alert.

About 53 residents forced from their homes in the Chaudière River area Saturday night were allowed to return Sunday when the banks receded.

With files from the Canadian Press