A Missouri State Highway Patrol incident report said the boat fire occurred around 9:44 a.m. at the 7.5 mile marker of the Gravois Arm at the lake.
Jeffrey Bonnell, 53, was transported to Lake Regional Hospital for minor injuries, according to MSHP.
The fire was fuel related but not related to propulsion or the generator, MSHP said. The cause of the fire is still being investigated.