RedactedNarrative: OPERATOR 1’S FRIEND and OPERATOR 1 were approximately 2 miles further up the canyon from their house boat. OPERATOR 1’S FRIEND stated a boat had gone by heading out of the canyon and left a wake behind. OPERATOR 1 saw the wake and jumped it with his Jet Ski, going approximately 40 miles per hour. When OPERATOR 1 was in the air his feet left the Jet Ski and he flipped over the handle bars of the vessel. When OPERATOR 1 landed he hit his head on the Jet Ski and fell into the water. OPERATOR 1 remained conscious however OPERATOR 1’S FRIEND stated that OPERATOR 1 was complaining of severe back pain and could not get back onto his Jet Ski. OPERATOR 1’S FRIEND assisted with getting OPERATOR 1 to the side of the canyon where he could lay on a rock while OPERATOR 1’S FRIEND went back to the house boat to get a ski boat to transport OPERATOR 1 back to the house boat. When OPERATOR 1’S FRIEND got back to retrieve the ski boat, VESSEL 1 OWNER went with him to help OPERATOR 1. When OPERATOR 1’S FRIEND and VESSEL 1 OWNER got to OPERATOR 1 they were able to put him on the boat but OPERATOR 1''s pain was too much for them to transport OPERATOR 1 off the lake. They got back to the house boat and were able to flag down an Arizona Game and Fish vessel for assistance. No damage to the vessel was observed.