* The Tamar is an important commercial shipping route, with Plymouth being a major port.
* The river is also used for recreational boating, including sailing, kayaking, and fishing.
Water supply
* The Tamar is a source of drinking water for over 1 million people in the South West of England.
* There are several dams and reservoirs along the river that store water and release it as needed.
Electricity generation
* The Tamar is also used for hydroelectric power generation.
* There are several hydroelectric power stations along the river, including the Tamar Hydroelectric Power Station, which is located near Plymouth and has a capacity of 20 MW.
Tourism
* The Tamar is a popular tourist destination, with many visitors coming to enjoy the river's scenic beauty and its many attractions, such as the Tamar Valley Area of Outstanding Natural Beauty, the Tamar Bridges, and the Cotehele House.