Could levee failures upstream plunge Ft. Calhoun into deeper risk?

According to local television news reports, a levee near the Ft. Calhoun nuclear power plant was intentionally breached on Friday in an effort to drain flooded farm fields. But the released water then flowed back into the Missouri River, raising its flood level by an un-reported amount. Federal, state, and county government authorities disclaim any involvement in the levee breach, leaving the local levee control board to answer questions. This raises another "what if" regarding flooding risks at Ft. Calhoun: what if private individuals upstream, taking matters into their own hands, decide to breach levees to save homes or crops from pent up floodwaters? Could the released water raise the flooding at the Ft. Calhoun atomic reactor yet higher, when there is only about 6 feet to spare before "all bets are off" on preventing flood waters from overwhelming vital safety and cooling systems?

Concerns about intake structure and emergency service water pumps at flooded Ft. Calhoun

Appearing on CNN two days ago, Fairewinds Associates nuclear engineer Arnie Gundersen focused his concerns about flooding at Ft. Calhoun nuclear power plant not on the reactor containment and auxiliary buildings, but rather on the water intake structure housing the emergency service water pumps needed for vital cooling functions. He urged that, like Ft. Calhoun, the Cooper atomic reactor, an exact replica of Fukushima Daiichi Units 1 to 4, be shut down immediately, so that its hellishly hot core can begin to cool down before flood waters rise anymore there. Arnie again raised the specter of upstream dams on the Missouri River failing, in which "all bets are off" at Ft. Calhoun.