Gene R. Balthazor, 39, Waupaca, is charged with first-degree sexual assault of a child.
He faces up to 60 years in prison if convicted.
Balthazor is accused of having sex with a girl who was 10 years old at the time of the alleged incident.
According to the criminal complaint, the incident occurred in a Manawa trailer park.
Balthazor currently faces misdemeanor charges of lewd, lascivious behavior from November 2013 and invasion of privacy with a surveillance device from January 2014.