RedactedNarrative: V1 put in at the boat ramp just south of the railroad bridge about 7:15 am. V1 traveled up river to an island just south of the railroad bridge when the operator decided to get out of the boat and pull the vessel under the bridge while his brother and the dog remained in the boat. After passing under the bridge the vessel got caught in the current rushing around the pylon and the boat proceeded to get pinned against it. Subject lost his footing on the river bottom and couldn't control the boat and as a result it began to take on water and became swamped. Passenger , who was wearing a life jacket exited the boat into chest high water and swam/waded down to the island, where subject had started to pull the boat from.