River Leven, North Yorkshire

River Leven
The mouth of the Leven.
Origin	Kildale Moor, Nth Yorks 54°27′50″N 1°2′47″W / 54.46389°N 1.04639°W / 54.46389; -1.04639
Mouth	River Tees at Yarm 54°30′31″N 1°20′12″W / 54.50861°N 1.33667°W / 54.50861; -1.33667
Basin countries	England
Length	46.2 kilometres (28.7 mi)
Source elevation	279 metres (915 ft)
Mouth elevation	16 metres (52 ft)
Basin area	196.3 square kilometres (75.8 sq mi)

The River Leven is a river in North Yorkshire, England and is a tributary to the River Tees. It rises on Warren Moor, part of Kildale Moor, in the North Yorks Moors and flows to the north of the moors to join the River Tees at Yarm.

Course

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 confluence with Dundale Beck where it turns north west through Low Easby and Little Ayton, before turning west and then south west at Great Ayton. It runs parallel to the A173 to Stokesley. The river increases in the amount of meanders as continues south west past Skutterskelfe to Hutton Rudby and Rudby, where it turns north west and then west again over Slape Stones waterfall. At Crathorne it turns north and then north east as far as Middleton-on-Leven before passing under the A19 in a north west direction. The final couple of miles are north and north west between Ingleby Barwick and Yarm, before the river joins the River Tees.^[1]

Water levels

• Low and High Water Levels are an average figure.

Geoglogy

The river drains from the Cleveland Hills across a mixed geology of mostly Permian and Jurassic age bedrock of low permeability. Most of the deposits on top of the bedrock are boulder clay. There is mixed agriculture, with some moorland and forestry near the source.^[3]

Natural History

Due to a weir on the lower river built during the Industrial Revolution, migratory and territorial fish and mammals had been missing from the river. In 2007, the Environment Agency built a fish bypass at the weir and in 2011, was able to announce the return of spawning Salmon to the river for the first time in 150 years.^[4]

History

In Stokesley, the river is crossed by a 17th Century Pack Horse Bridge, which was once the only crossing into the town.^[5] The Domesday Book records the existence of a water mill on the banks of the river in the town.^[6] In Hutton Rudby there is a plaque on a bridge that marks the spot of a water mill that, amongst several uses, once made sailcloth.^[7]

Lists

Gallery

• 

  Bridge over the Leven at Great Ayton

• 

  Coul Beck joining the River Leven near Rudby

• 

  Leven Bridge over the River Leven at Low Leven

• 

  River Leven, Great Ayton

• 

  River Leven, Low Green, Great Ayton

Sources

• Orndance Survey Open Viewer [1]
• Google Earth
• National Environment Research Council - Centre for Ecology and Hydrology [2]
• Environment Agency [3]

References