WALHALLA, S.C.—A body believed to be a Nashville man who fell from a raft in rapids in the Chattooga River has been recovered after spending nearly four days wedged against a rock under the water.

Authorities say divers recovered 58-year-old Michael Dorris just before noon Wednesday. Oconee County, S.C., Coroner Karl Addis plans an autopsy Thursday to confirm the identity and determine a cause of death.

Investigators say Dorris was on a commercial raft trip Saturday when the boat overturned. The other seven people were rescued.

The rapids are so swift, it took searchers until Tuesday to find the body, and another day to set up a way to recover the remains.