RedactedNarrative: The accident occurred when three individuals in three separate kayaks launched from shore nearby and on the upstream side of a large flood control dam. The dam had partially open flood gates and a very large volume of water was passing through the dam causing extreme currents and hydraulics. As the kayakers pushed off from shore attempting to cross the river, subject1 accidentally capsized her kayak and fell overboard. Subject1 did not have a pfd and could not swim well. Subject2 then exited his kayak to attempt to rescue subject1, but failed and parties lost sight of subject2 near the face of the dam. Subject3 was able to assist subject1 until first responders arrived to pull her from the water without significant injuries. Subject2 was later located by first responders straight out from the face of the dam deceased. Subject3 admitted that he and subject2 had consumed approximately three alcoholic beverages prior to the accident. The only pfds that subject2 and subject3 had with them were seat cushions that were not uscg approved.