The Bourne Rivulet is a river in the English county of Hampshire. It is a tributary of the River Test. The Bourne Rivulet (known as 'The Bourne' locally) is a winterbourne (a seasonal chalk stream that rises and falls with the water table). It usually rises in January and flows until around August each year. It normally runs from the village of Upton and flows through the villages of Hurstbourne Tarrant, St Mary Bourne and Hurstbourne Priors before joining with the Test near Tufton. Above Hurstbourne Tarrant it is known as the Swift or River Swift.