Police tell Action News that around 11:15 p.m. officers from the Pennsylvania Fish and Game Division pulled over a boat with five people on board for suspicion of drinking.
While the driver of the boat was being questioned, one of the occupants jumped off the boat.
Police searched for several hours, but were unable to find the unidentified male.
The operator of the boat has been charged with DUI.
Police plan to resume their search for the missing boater later today.