Serious floods occurred in 1948 and 1950 . The 1950 flood reached a high of 30 ft ( 9.2 m ) at Winnipeg and caused the largest evacuation in Canada 's history : an estimated 70,000 to 100,000 people had to be evacuated . An estimated $ 606 million CAD ( 1997 ) of damage resulted . In the aftermath , the government of Manitoba and the Canadian federal government constructed flood safety measures
1950 flood
1950 Red River flood
1997 Red River flood