RedactedNarrative: Three adults went fishing during high flows (900-1000 cfs) on the Situk River. Vessel was facing upriver and motor was running to allow for a slow drift downstream while fishing. As they approached a large log jam the operator attempted to turn 180 degrees but did not allow enough room and the bow struck the logs and rode up on top of the log jam. The operator attempted to throttle over the logs and free the bow which swamped the stern. The vessel swamped, flipped and was pinned by the logs. One of the occupants was able to get free but the other two were pinned beneath the vessel and logs and drowned.