At approximately 1130, operator was operating his vessel on the Coralville Reservoir near the Scales Point boat ramp. operator was unaware that the water was shallow in the area, and he ran the boat aground on an underwater sandbar. He spent several minutes trying to free his boat from the sandbar. When the boat was floating again, operator turned around and was operating the vessel south towards the Mehaffey Boat Ramp. At approximately 1150, the vessel's engine quit. operator lifted the cover off the back to look at the motor. When he raised the cover, flames and smoke were coming from the engine compartment. He emptied his fire extinguisher into the compartment. Another boat nearby came to the aid of operator. operator used good sam's fire extinguisher and emptied it onto the fire unsuccessfully. operator and occupant climbed aboard good sam vessel. They called 911. Solon Fire Department responded to the scene and put out the fire. 

The exhaust system of the vessel became blocked when the boat was run aground. This caused the engine to overheat, and the fire to start in the exhaust system of the vessel.
North Liberty                 