Provincial officials said they anticipate the Red River will crest in Emerson between April 29 and May 5.
The river crest takes approximately another five to seven days to reach Winnipeg from Emerson.
Officials said the Red River basin is just above flood stage in the U.S.
It's now expected the river in Fargo could reach 39 feet (11.9 metres) by next Monday, just a foot lower than record levels in 2009. Fargo is planning to protect against a 42-foot crest (12.8 metres).
The Manitoba portion of the river rose between two to three feet (0.6 to 0.9 metres) since Apr. 3, but is still currently below flood stage at most locations in the province, said officials on Apr. 4. In Winnipeg, the Red River was listed Monday at 14 feet (4.3 metres) at the downtown James Avenue gauge.
Officials with Manitoba Water Stewardship said weekend precipitation in the Red River Valley will have "little impact" on the average weather scenario from March's flood outlook, which called for the spring to have a slightly higher river level than the 2009 flood.
Weekend precipitation did, however, contribute to an ice jam south of the St. Andrews dam, which briefly caused "minor over-bank flooding," in the Captain Kennedy Road area, said provincial officials.
In Winnipeg, more than 100 homeowners are being told this week they need to start building sandbag dikes. That is earlier than first thought and city officials said it's because the Red River is now rising about a foot a day.
Most of the affected homes are along Kingston Crescent, Cloutier Drive and Christie Road. Sandbags are slated to be delivered Wednesday, with the hope that dikes are built by the end of the weekend.
The remaining 460 at-risk properties in Winnipeg won't need to build their dikes quite as early, said city officials.
Volunteers are needed to help out. Anyone wanting to help is asked to call 311.
