A 47-year-old man has been charged with sexually assaulting a 16-year-old girl at a local marina last August.

Jeffrey Susa of Monroe surrendered at Police Department headquarters Friday after learning that a warrant for his arrest had been issued, police said.

Susa was charged with second-degree sexual assault after a month-long investigation into the report that he had sexually assaulted the female teen on his boat at the ER Strait Marina in August.

Susa assaulted the teenager after giving her alcohol, police said.

Bond was set at $100,000 and Susa is scheduled to appear Oct. 18 at state Superior Court in Stamford.