(MINOT, N.D.) -- A berm at a nuclear power plant in Fort Calhoun, Nebraska collapsed early Sunday morning, allowing Missouri River flood waters to reach containment buildings and transformers and forcing the shutdown of electrical power.
As of Sunday night, backup generators were cooling the nuclear material at the Fort Calhoun Nuclear Station. The plant has not operated since April, and officials say there is no danger to the public.
Nevertheless, federal inspectors are on the scene, and the federal government is so concerned that the head of the Nuclear Regulatory Commission is headed to the plant.
Meanwhile, there was no protecting thousands of homes in Minot, North Dakota, where massive flooding of the Souris River hit its peak Sunday, flooding more than 4,000 homes.
There is some good news: The river in Minot peaked two feet lower than expected. However, it is nearly 13 feet above flood stage and it is expected to stay near that level for days.
"It could be two to four to six weeks, or more, before the water actually goes back into it's banks ... [and] before [residents] get to come and see their houses," Brig. Gen. Bill Seekins of the North Dakota National Guard told ABC News during a tour through the flooded areas.
Seekins described the scene as "almost apocalyptic."
Minot Mayor Curt Zimbelman said the devastation may be even greater than expected.
"I think we're going to reach probably 4,500 [homes] before this is all done, where we've got a lot of water on these homes," Zimbelman said.
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