The Derwent River is a major river located in Tasmania, Australia. It flows for approximately 210 kilometers from its source in the Central Highlands to its mouth at the Derwent Estuary, where it meets the Tasman Sea. The river is known for its scenic beauty and is a popular spot for recreational activities such as fishing, boating, and kayaking. The Derwent River passes through several towns, including New Norfolk and Hobart, the capital city of Tasmania. The river is also significant for its historical importance, as it was a key transportation route for early settlers and played a role in the development of the region's economy.