River Leven, North Yorkshire

River Leven
The mouth of the Leven.
Location
CountryEngland
Physical characteristics
Source 
  locationKildale Moor, North Yorkshire
  coordinates54°27′50″N 1°2′47″W / 54.46389°N 1.04639°W / 54.46389; -1.04639
  elevation279 metres (915 ft)
Mouth 
  location
River Tees at Yarm
  coordinates
54°30′31″N 1°20′12″W / 54.50861°N 1.33667°W / 54.50861; -1.33667
  elevation
16 metres (52 ft)
Length46.2 km (28.7 mi)
Basin size196.3 km2 (75.8 sq mi)

The River Leven (pronounced /ˈlvən/) in North Yorkshire, England is a tributary of 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.