An Eagle Lake man has been charged with operating a watercraft while under the influence. The Maine Warden Service says 22-year-old Travis Toussaint was operating a Polaris personal watercraft on Eagle Lake. They say he struck a pontoon boat that was tied to a dock at the Loon’s Echo Campground. There were no occupants in the pontoon boat at the time of the incident.Toussaint suffered a significant knee injury to his right leg and a gash on his forehead. He was taken to Northern Maine Medical Center in Fort Kent and was later transferred to Eastern Maine Medical Center.Authorities say speed, alcohol and limited visibility due to darkness were contributing factors to the incident.