RedactedNarrative: Operator1 and Operator2 were driving two separate PWC's down the Spokane River near Black Bay in congested waters.  Operator1 came around a vessel suddenly in front of Operator2 and collided with Operator2. The two vessels struck each other. Operator1's starboard side of his bow hit Operator2's port side. Operator2's PWC was damaged severely and was a total loss. Operator2 was also struck in his left ankle and had to receive 6 stitches.  Due to Operator1 driving in a manner which caused an injury accident, he was cited for Negligent Operations.