Cow Green Reservoir Dam
The dam is 25m high and 550m long. You can walk along the top of it as a footpath. It took 300 men about 4 years to build. It was completed in 1971.
The reservoir is designed to keep the river topped up even when there are dry periods, usually in Summer. A constant and predictable supply of water was essential for the growing industry of Teesside and the growth in homes of the people who worked there. There are two water treatment plants that it supplies along the Tees. Can you find them? Between them, the two plants can produce around 300 million litres of water a day.
The dam was also one of the first in the world to be built with sensors embedded in it to detect movement. Now all dams in the modern world use this technology.
Although a big success when it was built, supply soon outstripped demand because ICI further developed its chemical plants at Wilton and Billingham. A new, even bigger reservoir was created to cope with this extra demand. Can you find what it is called?