A body believed to be that of missing tramper Sharny Abbott, 23, of Richmond, was found by police in the Richmond Ranges.
Nelson police search and rescue teams found the man's body about 5.50pm in the Roding River, about 400m downstream from the Hackett junction after scouring the area all day.
Mr Abbott was last seen at the Starveall Hutt about 1pm on Sunday. Police said he was well-equipped and had outdoor experience, having previously been in the army.
A formal identification is yet to be made, but Mr Abbott's next of kin have been notified.