Child, Youth and Family Services has five urgent new cases of child abuse to investigate as a result of the screening of a television documentary and panel discussion.
Department spokesman Stephen Ward said CYFS call centre staff received 211 calls on Wednesday night, some while the documentary, Questions 2: Killing Tomorrow, was still being screened on TV3.
CYFS social workers will investigate 53 formal notifications of child abuse resulting from the flood of calls.
Five cases classed very urgent would be assigned immediately to social workers for investigation, Mr Ward said.
The department engaged staff on Wednesday night to handle the flood of calls expected to be generated by the documentary, aimed at raising awareness of child abuse.