Cow Green Reservoir

General data
- Name: Cow Green Reservoir
- Water system: River Tees
- Water type: Artificial lake
- Progression: River Tees -> North Sea -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: Europe
- Countries: England (UK)
Description
Cow Green Reservoir is a 2-mile (3 km) long water reservoir forming part of the border between the historic counties of Westmorland and County Durham in northern England, built by Mitchell Construction between 1967 and 1971 to supply the industries of Teesside. The reservoir acts as a river regulation reservoir releasing water into the River Tees during dry conditions so that it can be abstracted further downstream. These regulated flows allow six further reservoir levels to be maintained and these in turn provide water for industry and domestic use.