It starts near Mark on the Somerset Levels and flows north for about 6 kilometres (4 mi) under the M5 motorway to join the River Axe near Loxton.

It provided a link between the Axe and the River Brue, as part of a waterway called the "Pilrow Cut"[1] probably canalised in the early 13th century.

[3] Within the village of Mark, it is crossed by an iron bridge erected in 1824, which claims to be the oldest of its kind in the county.

In the 5th and 6th centuries the Mark Yeo acted as a route from the small port of Rackley on the river Axe across the marshes to Glastonbury.

[10] The driver of the car was later charged with causing death by driving without due care and attention while over the alcohol limit.