(KLZA)-- The Nebraska Public Power District announced Sunday afternoon  that Cooper Nuclear Station near Brownville is no longer under an emergency classification of a "Notice of Unusual Event status."

The plan entered the emergency classification March 15th due to the Missouri River level rising to levels dangerous to the plant.  

The river level is three fee t below the level at which the Cooper Nuclear Station is required to enter the emergency classification status.  The plant operated safely while under the unusual event notice. 

A news release from NPPD says  there was not threat to plant employees or the public throughout the event.