RedactedNarrative: Watercraft was operating on the river. There was a large rolling wave, approximately 6 feet high, that the watercraft struck, tossing a passenger into the air and back onto the chair. She landed on her back. The operator transported her back to the marina to obtain medical attention. EMS responded and transported her to the hospital. It is unknown if life jackets were being worn. There was no obvious structural damage found for the watercraft. Operator smelled of an alcoholic beverage, but was not impaired.