Heavy storms are causing extreme flooding across the country

The Elkhorn River in Waterloo, Nebraska, has reached a record flood stage of 24 feet.
1:52 | 03/16/19

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Transcript for Heavy storms are causing extreme flooding across the country
Now to the major flood threat across the upper midwest. The worst flooding in decades in Nebraska. Officials declaring a state of emergency. Several bridges washed out, the combination of melting snow and drenching rains turning deadly. Residents on the roof there, on the eastern part of the state, lifted to safety. Our Sam champion tonight with the very latest. Reporter: Tonight, rescues and evacuations in the heartland. Parts of Nebraska, seeing the worst flooding in decades. There goes the canal bridge, right there, it just washed out. Reporter: Bridges collapsing, levees breeching, all triggered by rapid snowmelt and heavy rain while the ground is frozen or saturated. It really is very dangerous, it's moving fast. It's cold water. You do not want to get caught in it. Reporter: This black hawk helicopter is dropping one-and-a-half ton sandbags to protect the city of Lincoln's wells. Northwest of Omaha, the national Guard rescuing four people from this home surrounded by water Friday. While in Waterloo, the elkhorn river topping 24 feet, breaking the record by more than five feet. The water claiming at least one life. Two other people are missing in the state. Dangerous flooding extending all the way to Wisconsin. Northeast of Madison, first responders going door to door this week. It's just unbelievable. I just never expected it to be this bad. Reporter: Flooding so bad that in the small town of columbus,more than 40 people had to be rescued. Sam joins us live on set. Where is all this water going? This is such a large area of flooding. Take a look at the states involved here. Big area in green, from Nebraska into Iowa, also into Wisconsin, the green shows us where the worst flooding is. Many of these areas have crested. So, it's Kansas City, St. Louis -- all in Missouri, also into Illinois, those rivers will stay at floodstage while into next week. Sam, thank you. Next to that wild shootout in

This transcript has been automatically generated and may not be 100% accurate.

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