Members of the river trip group pulled Vanderlugt out of the water, saw he was unresponsive and began CPR, park officials said. They said park rangers were flown into the location by helicopter, but Vanderlugt could not be resuscitated.
The boat flipped in the rapid when it came up against a rock, said John Dillon, executive director of the Grand Canyon River Outfitters Association, which represents outfitters permitted in the canyon.
Dillon said some of the passengers decided against continuing the trip, operated by Western River Expeditions.
An investigation will be conducted by the National Park Service and the Coconino County Medical Examiner.