Michael Wlas, Jr., 20, of the 600 block of Pomona Road in Cinnaminson was arrested on Friday.
Officers were called to Wood Park for a a report of a male that had exposed himself and was masturbating in front of two sisters, ages 14 and 16, while inside the Gazebo located in the park.
Police say Wlas had been in the park walking his dog, and entered the Gazebo during a brief rainstorm.
It was there, and in the presence of the juveniles, he committed the alleged crimes, police said.
Wlas was arrested a short time later and charged with two counts of criminal sexual contact, lewdness and endangering the welfare of a minor.
He was remanded to Burlington County Jail on $27,500.00 full cash bail pending a first appearance in court.