Esk

The River Esk is a river in North Yorkshire, England that empties into the North Sea at Whitby after a course of around 28 miles (45 km) through Eskdale. The name of the river is derived from the Brythonic word ‘isca’ meaning ‘water’. The Esk is the only major river in Yorkshire that flows direct into the North Sea; all other watercourses defined as being major rivers by the Environment Agency flow into the North Sea via the River Tees or the Humber Estuary.

Source: Wikipedia https://en.wikipedia.org/wiki/River_Esk,_North_Yorkshire