RedactedNarrative: VESSEL 1 WAS TRAVELING NORTH WEST PULLING A WAKEBOARDER.  VESSEL 2 WAS ANCHORED FACING THE NORTH WITH THE OPERATOR AT THE HELM AND PASSENGERS FISHING OFF THE STERN.  VESSEL 1 INDICATED THAT THE REAR MIRROR ABOVE HIS HEAD AT THE HELM PREVENTED HIM FROM SEEING VESSEL 1 UNTIL IT WAS TOO LATE AND VESSEL 2 STRUCK VESSEL 1 IN THE STERN.  VESSEL 2 INDICATED THAT HE SAW VESSEL 1 APPROACHING BUT WAS UNABLE TO RESPOND IN TIME.  NO ONE WAS INJURED.
NameOfBodyOfWater: BLACK CANYON RESERVOIR
NearestCityTown: EMMETT                        