The Exe is a river that flows through Devon, England. It is the longest river in Devon and is approximately 60 miles long. It rises near Exmoor and flows southwards to the English Channel at Exmouth. Along its course, it passes through several towns and villages, including Tiverton, Exeter, and Topsham. The Exe is an important source of water for the region and is also used for recreational activities such as fishing and boating.