VESSEL 1 WAS A 24' SUPRASKIER OPEN MOTORBOAT WITH 1 PERSON ON AND 1 SKIER.  OPERATOR STATED THAT HIS FRIEND WAS WAKE SURFING BEHIND THE VESSEL WHEN SKIER APPARENTLY GOT HIS THUMB WRAPPED IN THE SKI LINE WHILE FALLING AND SEVERED HIS THUMB.  OPERATOR STATED HE WAS TRAVELING SOUTHWEST FROM THE NORTH END OF THE HEMMENWAY WALL AT A SPEED OF APPROXIMATLEY 10 MPH WHILE CRUISING AT A CONSITENT SPEED AND TRAVELING IN A STRAIGHT LINE.  OPERATOR STATED HE AND THE SKIER CONSUMED ONE BEER IN THE LAST TWO HOURS.  NPS DID NOT OBSERVE ANY SIGNS OF INTOXICATION ON OPERATOR AS HE INTERVIEWED HIM.  OPERATOR STATED THAT HE WAS THE ONLY PERSON ON THE VESSEL AT THE TIME OF THE ACCIDENT, TELLING HIM THERE WAS NOBODY OBSERVING THE SKIER.  OPERATOR WAS CITED FOR NOT HAVING AN OBSERVER WHILE TOWING.  SKIER WAS TRANSPORTED TO UMC TRAUMA CENTER.  NO OTHER INJURIES WERE REPORTED AND NO DAMAGE WAS REPORTED TO VESSEL 1.
BOULDER CITY                  