He faces six counts of indecent assault and three offences of rape against the girl, the CPS added.
Home Secretary Suella Braverman said at the time that she took "immediate action" after she was made aware he was the subject of a police investigation and instructed her officials to ask him to resign or face immediate suspension.
He is due to appear before magistrates in Hull on 28 June.
Summary
https://news.sky.com/story/ex-police-watchdog-chief-michael-lockwood-charged-with-raping-girl-under-16-and-indecent-assault-12903509
https://archive.ph/6QkpM