Dewey (Grand) is a small ranching community at the junction of the Dolores and Colorado rivers. There are two versions of the name source. The first and most preferred states that Dewey Smith, a prospector, camped by the river ford around 1880. Today a bridge named for Dewey crosses the river at this point. Another version suggests that the name was taken from a raft used to ferry supplies and equipment down river to the mouth of Professor Creek. The raft was named for Admiral Dewey.