the river tamar divides cornwall and devon
The three letter name of the river that leads to the English Channel is the River Exe. It flows through Devon and Somerset counties from Lyme Bay.
Devon
River Trent.
Groot River in south Africa
The River Tamar
The Devon River
Devon Iott is 5' 5".
Tagus
There doesn't seem to be one. It seems to be discussing a body of water, but nothing seems to fit. Brook (5 letters) Creek (5 letters) River (5 letters) Stream (6 letters) "A stream" is 7 letters, but that is 2 words and has a space.
The river Tamar.
Some five letter words containing the letters o and v are: Volvo Rover Voles Devon Vocal