Department of Magical Accidents and Catastrophes
Members of this Department, also known simply as the Department of Magical Catastrophes, leap into action when magic spells go awry, particularly when magical effects are spotted by Muggles. The Department works in concert with other Departments to "clean up" the scene of any such event, modifying memories and undoing magical damage. If necessary, the Department will create alternate stories to feed to the Muggle press to keep the existence of the magical community a secret.
The Department operates teams which can respond at a moment's notice to a magical accident. These teams include:
Accidental Magic Reversal Squad
Also referred to as the Accidental Magic Reversal Department in earlier editions of the book, this team is the first on the scene when a magical accident or catastrophe occurs. The team will include trained Obliviators to modify memories of Muggles on the scene.
Invisibility Task Force
Although not specifically stated as being in this department, it seems logical, since this group casts various forms of invisibility magic to hide magical places and creatures from Muggle eyes (DP).
Known Department personnel, past and present
The main offices of the Department are located on level three of Ministry of Magic Headquarters (OP7). The offices include the headquarters of the Obliviators, witches and wizards trained in memory modification.