Does Iowa Have Flooding

Iowa had become a state only 4 1/2 years prior. The flooding in Iowa may have also been exacerbated because the Des Moines River basin–where the worst of the flooding occurred in Iowa–had been settled for less than 10 years. Residents there had never previously experienced a major flood.

How often does it flood in Iowa?

Time PeriodAnnual Exceedance Probability2 years50%5 years20%10 years10%25 years4%

When was the last big flood in Iowa?

Looking towards downtown Cedar Rapids, Iowa, on June 12DateJune 7 – around July 1Deaths0Property damage$6 billion