RedactedNarrative: Vessel 1 was adrift on Lake Texoma while some of the Passengers were swimming.  All Passengers were getting back on board Vessel 1 and the Operator thought that every one was back on board.  Victim 1 was still in the water at the Stern of Vessel 1 attempting to get back onto Vessel 1.  The Operator of Vessel 1 started the engine and started going forward and Victim 1 was struck by the Prop of Vessel 1.  Victim 1 suffered Prop Cuts to her Pelvic and Rectal area and to one of her legs.  Victim 1 was pulled aboard Vessel 1 and transported to Alberta Creek Marina where Marshall County EMS transported Victim 1 to the Catfish Bay Air Strip and AirEvac then transported Victim 1 to Medical City Plano, TX.  where Victim 1 was admitted in stable condition.  Area of the accident was approx .5 miles east of West Shore Line of Lake Texoma and approx 1.5 miles west of East Shore Line of Lake Texoma and approx 1 mile south of Railroad Bridge.