Scottish Water says Megget is the largest earth embankment dam in the UK They were to be moved on as work began on a massive construction project in 1977 that would take six years to complete.

Lower Glen Dam is a small reservoir with an earth embankment dam on the course of the Glen Burn, which is owned by Scottish Water but not used for drinking water.

The embankment dam is the most common in the UK, which has over 3,000 of them, including one dating back to the 9th century.

If the dam holding back the Toddbrook Reservoir were to collapse, it would lead to “massive” flooding, an expert has warned. Dr Mohammed Heidarzadeh, of Brunel University, said that if the ...

Scottish Water said that the dam holds 64 billion litres of fresh water - the average bath uses about 180 litres - and at 55m high (180ft) it remains the highest earth embankment dam in the UK.