Trent

The Trent, the third-longest river in the United Kingdom, has its source in Staffordshire, on the southern edge of Biddulph Moor. It drains the North Midlands, eventually flowing into the Humber Estuary. The river is known for dramatic flooding after storms and spring snowmelt, which in the past have often caused its course to change.
The river passes through Stoke-on-Trent, Stone, Rugeley, Burton-upon-Trent, Nottingham, Newark-on-Trent and Gainsborough before joining the Yorkshire Ouse at Trent Falls to form the Humber Estuary, which empties into the North Sea between Kingston upon Hull in Yorkshire and Immingham in Lincolnshire. The wide Humber estuary has often been characterised as the boundary between the Midlands and Northern England ("The North").

Source: Wikipedia https://en.wikipedia.org/wiki/River_Trent