The 1997 Red River flood was considered a 200-year flood. Why is it now considered only to be a 65-year flood

A extremely unusual thawing of winter snow and river ice after a winter season that saw far above-normal precipitation across the Northern Plains was the main contributor to the flooding in 1997.

Why is the Red River called the Red River?

After it was explored in 1732–33 by the French voyageur Pierre Gaultier de Varennes et de La Vérendrye, the river, called Red because of the reddish brown silt it carries, served as a transportation link between Lake Winnipeg and the Mississippi River system.

How did the Red River flood affect people?

The floodway was designed to manage a flow of 1,700 m3/s, but 1,800 m3/s was instead used.
28,000 people were evacuated due to the 1997 flood, which also caused $500 million in damage.
Additionally, parts of Minnesota, North Dakota, and southern Manitoba were inundated by the river.

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