The Arkansas State Crime Laboratory obtained DNA from the parents of Michelle Kathrin Ammann to make the identification.
Sheriff's Deputy Judy Daniell told the Hot Springs Sentinel Record Monday that a boater discovered the remains Oct. 1 in the lake's main channel. Daniell says the condition of the body indicated it had been there for several years.
Ammann and a friend were swimming around and diving off a party barge Aug. 20, 2000, when high winds moved the barge away from them. A witness pulled Ammann's friend out of the water, but when he turned the boat around Ammann was gone.
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