(CNN)Swollen rivers in Louisiana are expected to keep rising Monday as deadly floodwaters have displaced tens of thousands of people and prompted a state of emergency.
The floodwaters have claimed at least five lives -- one in Tangipahoa Parish, two in East Baton Rouge Parish and two in St. Helena Parish.
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More than 24 inches of rain have fallen since Wednesday in Livingston, near Baton Rouge, making the disaster an extremely rare weather event, according to the National Weather Service. The statistical chance of such flooding occurring in any given year is 1%, the weather service said.