The Cooper Nuclear Power Station near Brownville, Nebraska.
As the Missouri River continues to swell, the US state of Nebraska has issued an emergency flood warning at the Cooper Nuclear Power Station.
The Nebraska Public Power District has issued a flood alert for the state's southeast Cooper nuclear plant, the Associated Press reported.
"We knew the river was going to rise for some time," said Columbus-based utility spokesman Mark Becker, adding that it was just a matter of time.
The water level at the Cooper plant station currently stands at 13.6 meters. If water levels reach 13.9 meters, the station may be shut down.
Flash flood warnings have also been issued for several counties in the state of Missouri.
Nebraska's Fort Calhoun nuclear plant has been shut down, as water is currently being held back by a series of barriers, including an 8-foot rubber wall.
The Cooper and Fort Calhoun nuclear plants are the only plants along the Missouri River.
Heavy rainfall and melting snow on the Rocky Mountains are expected to keep the river's water level high until August.