Dean River city is the capital city of the fictional country of Dean River in a novel or story. It is an important hub for political, economic, and cultural activities in the country. The city is likely to have significant infrastructure, including government buildings, commercial centers, and educational institutions. It may also feature landmarks, parks, and other attractions that make it a vibrant and lively place for residents and visitors. The specific details and characteristics of Dean River city would depend on the author's imagination and the context of the story.