This English river flows from the Cotswold  hills to its mouth on the North Sea
Flowing generally ... "Avon" derives 
from the British language abona, "river", which also survives as a number .... into 
the Midlands from the north, east and west blocking the flow of the Avon to its 
former... [DOC] [TLE] River Thames - Wikipedia [PAR] The River Thames is a river that flows through southern England.