Vessel was crusing at approximately 30 miles per hour, North towards Gradad Bridge. The operator and passengers were keeping a proper lookout, because of floating debri, such as limbs and logs. 
Operator stated, there was a loud thump sound and vessel stopped moving. The operator observed the lower unit of his vessel hanging from the hydraulic trim cylinders. 
The operator stated, he must have hit a partially submerged log. 
There were no injuries to the operator or passengers.
Dworshak Reservoir
OROFINO                       