It receives several feeders, and falls into the Trent near Repton.
In 874 the march of the Danes from Lindsey to Repton drove Burgred from his kingdom.
Farther south, heavy crops of wheat, turnips and other cereals and green crops are not uncommon, while barley is cultivated about Repton and Gresley, and also in the east of the county, in order to supply the Burton breweries.
Later the district formed the northern division of Mercia, and in 848 the Mercian witenagemot assembled at Repton.
In the 9th century the district suffered frequently from the ravages of the Danes, who in 874 wintered at Repton and destroyed its famous monastery, the burial-place of the kings of Mercia.