The San Juan County Sheriff's Office said Saturday that the body was found near the mouth of Monument Basin. It's believed to be that of Casey Menuey, 33, who was separated from his rafting party on June 6 at Lathrop Canyon, about four miles up-river.
Menuey was last seen at a stop in Lathrop Canyon to explore a trail with his group and hadn't been seen since. National Park Service rangers arrived hours after he originally disappeared and tracked him back to to the riverbank, leading them to believe he entered the water.
The sheriff's office says Menuey was not wearing a life preserver at the time he disappeared and that alcohol is believed to be a factor. The body will be transported to the Utah Medical Examiner's Office in Salt Lake City for positive identification and further examination.