RedactedNarrative: OPERATOR STATED HE WAS TRAVELING AT APPROX 45-50 MPH WHEN HE STRUCK SOMETHING HE BELIEVED TO BE A STUMP SUBMERGED IN THE LAKE.  OPERATOR STATED HE RETURNED TO THE 16TH STREET BOAT RAMP AND PUT THE BOAT BACK ON THE TRAILER.  UPON INSPECTION, INVESTIGATING OFFICER NOTICED DAMAGE CONSISTANT WITH  THE OPERATOR'S STATEMENTS.  THERE WERE 2 HOLES IN THE HULL WITH WOOD CHIP IMPALED IN THE HULL THAT WOULD BE CONSISTENT WITH COLLISION WITH A SUBMERGED STUMP. EXACT LOCATION WAS UNABLE TO BE DETERMINED DUE TO THE VESSEL BEING REMOVED FROM THE LOCATION.