MOFFAT COUNTY, Colo. (CBS4) – A rafter died in the Green River in Dinosaur National Monument. Park officials say the drowning happened on Saturday.

The man’s body was recovered after a rafting trip in Triplet Falls with family and friends.

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Officials say the raft flipped and the 47-year-old man from California went under water for about 10 minutes. CPR was performed for about an hour and a half, but he was later declared dead.

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He was taken to a hospital in Utah via helicopter. His identity has not been released.

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Park officials say Triplet Falls is a Class III area, and the Green River was flowing at around 2,350 cubic feet per second at the time of the accident.