the 1894 fraser river flood had a return period of slightly more than 500 years and the 1948 flood was close to a 200-year event. the 1997 red river flood was named the 'flood of the century'. the international joint commission (ijc)'s 1998 report warned that although the 1997 red river flood had a "return interval ranging from 100 to 500 years, depending on the location", there was a "statistical probability of a similar flood each year." the 2011 assiniboine river flood was estimated to have a return interval of 300 years.