The river's source is a small wooded lake just north of the village of Swanton Novers, after which the river passes close to Fulmodeston, then north to pass through the village of Great Snoring, which is noted in the Domesday book as having a watermill.
The river's origin is described as a small wooded lake near the village of Swanton Novers. It then flows close to Fulmodeston before passing through the village of Great Snoring, which is mentioned in the Domesday Book as having a mill.