River Leven, North Yorkshire River Leven, North Yorkshire The River Leven is a river in North Yorkshire, England, a tributary to the River Tees. It rises on Warren Moor, part of Kildale Moor, in the North York Moors and flows to the north of the moors to join the River Tees at Yarm. The source of the river is on Warren Moor, part of Kildale Moor, just south of the village of Kildale. It flows east until it reaches the Whitby to Middlesbrough rail line where it does a complete turnaround to flow west to Kildale. It then flows south-south-west through woodland to the
Middlesbrough F.C. to the industrial air pollution – smog – that used to hang over the town, but it was later used by Middlesbrough fans in a somewhat self-deprecating manner before finally being adopted as a badge of pride by supporters of the club. An example of this can be seen on the banners carried to away games stating "Smoggies on Tour". Middlesbrough fans were notably praised by UEFA Chief Executive Lars-Christer Olsson after their behaviour during the 2005–06 UEFA Cup campaign. He commended that: Middlesbrough fans had also been praised by Cleveland Police for their behaviour in previous rounds, particularly in