eingetreten

Fortunately, the fear of a dam break has not occurred.

past participle of eintreten

(class-5, strong) to enter, to come into
(class-5, strong) to occur, to eventuate
(class-5, strong) to join a club association etc. [with in (+ accusative)]
(class-5, strong) to advocate, to support, to stand for, to champion [with für (+ accusative)]
(class-5, strong) to kick [with auf (+ accusative)]
(class-5, strong, transitive) to open (something e.g. a door) by kicking
(class-5, reflexive, strong) to get something in one's foot by stepping on it [with accusative]
(class-5, strong) to wear in (shoes)