The 2,000-foot berm collapsed about 1:30 a.m. Sunday, allowing the swollen river to surround two buildings at the plant. The NRC says those buildings are designed to handle flooding up to 1014 feet above sea level. The river is at 1006.3 feet and isn't forecast to exceed 1008 feet.
1. Missouri River Floods Fort Calhoun Nuclear Power Station in Nebraska
2. Cooper Nuclear Station Declares “Notification of Unusual Event” To Address Rising Missouri River Waters & Flooding
3. Report: Spent Nuclear Fuel Pools in the United States of America (2011)