RedactedNarrative: Vessel 1 got too close to a small waterfall and was pulled into the falls. Vessel 1 capsized and both the operator and occupant were ejected into the water. The operator was able to hold onto the overturned vessel but the victim was swept downstream. The vessel finally drifted into shallow water and the operator was helped to shore. The victim was located approx 1080 feet south of the narrows bridge where he had become hung in a line of rocks and apparently drowned. Vessel operator stated that he saw the victim going downstream and heard him yell for help just prior to the bridge then didn't see or hear him again. Pfd's were not in use. Area of the accident was approx 620 ft north of the narrows bridge and approx 100 feet west of the east river bank and approx 150 feet east of the west river bank.