Llyn Clywedog Reservoir

Part of 1. Questions to the Minister for Climate Change – in the Senedd at 1:32 pm on 18 May 2022.

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Photo of Julie James Julie James Labour 1:32, 18 May 2022

Yes, thank you very much for that series of queries. And of course we understand the sensitivity of these kinds of issues for the people of Wales and also for all the people who rely on the rivers and catchment areas for a variety of things, including their drinking water.

So, as I'm sure you already know, Hafren Dyfrdwy owns the Clywedog reservoir. Proposals for additional use of the water or transfer options should be included in the company's water resource management plan. Both the Environment Agency and NRW recognise the impacts of high water flows to local landlords and further downstream on the River Severn. And all the organisations involved have committed to undertaking a long-term review to modernise the management of the reservoir to best meet the challenges of the future, which is obviously a really complicated thing to do, and which is likely to take quite a considerable period of time and new legislation to ensure that sustainable long-term change. Meanwhile, NRW is working with the Environment Agency to implement any possible changes to the working procedures under the current rules and legislation that could improve the current operation of the scheme, drawing on experiences of managing other comparable systems in Wales and elsewhere. The changes should have a beneficial impact on flood alleviation given the nature of the catchments, but it's unlikely that these changes could make significant differences during repeated rainfall events of the magnitude we've seen over the last few years, and hence the need for the longer term review of the whole process. 

Our policy is obviously to reduce and manage the risk of flooding to people and communities over the next decade and it's set out in the national flood strategy. It underlines the importance we place on flood risk and the growing risks associated with climate change from the flooding and coastal erosion.

Also, as part of the longer term planning for water supply, we're looking at schemes that could supply water where deficits are predicted over the next 50 years. Hafren Dyfrdwy, which operates the reservoir, as I've already said, and Severn Trent are looking at a joint scheme to look at the feasibility for the dam so that more water could be sent down the River Severn during dry periods—so the exact opposite of the flooding—to maintain water flow in the river, where a deficit is forecast. But that doesn't feature in the current draft water resource management plan, which is signed off by Welsh Ministers anyway. So, if that comes forward, it will certainly come to us to look at so that we can be satisfied that that is fit for purpose, both for the Severn catchment area and for the people locally.