Why you may see divers and low water levels at Powys dam

Craig Goch in the Elan Valley. Picture by Jonathan Rudd.
Craig Goch in the Elan Valley. Picture by Jonathan Rudd.
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Divers and drops in water levels will be seen at “stunning” Elan Valley dam as key maintenance work is undertaken.

Welsh Water has confirmed that Craig Goch dam will be undergoing some vital maintenance work over the coming weeks.

In a public notice, Welsh Water confirmed that the public “may see divers hard at work inspecting underwater structures”.

The company added “to carry out this work safely, reservoir levels my need to be lowered but this is completely normal and part of standard practice.

"The excess water is carefully managed, often flowing into other reservoirs. Once the work is complete, water levels will return to normal.”

This is the latest in a series of maintenance undertaken at the dam this year, with work beginning back in April.

It is hoped that this latest set of works will be the last and they are expected to be finished by the end of October.


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In a recent update the Elan Valley Facebook page added: “Colleagues from Dwr Cymru Welsh Water are carrying out essential maintenance at the stunning Craig Goch Reservoir in the heart of the Elan Valley.

“You might notice construction activity or even divers inspecting underwater structures! Water levels may drop temporarily.

"Don’t worry, it’s all part of the process and the extra water is carefully managed. Everything will return to normal once work is finished.”

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