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If you own or manage a high-risk reservoir you must arrange to have it inspected by a suitably qualified civil engineer.

Your Inspecting Engineer will provide you with a report which contains recommendations which you must address.

When you appoint a reservoir Inspecting Engineer, you will be asked for information about the reservoir.

If you own or operate a reservoir, you need to prepare a flood plan to set out the actions you will take to respond to an incident. In an emergency you will not have time to do this properly.

Your reservoir flood plan sets out the actions you will take to deal with incidents at your reservoir. For it to be effective you need to keep it up to date.

Guidance for reservoir panel engineers to check reservoir flood plans are appropriate and proportionate.

If you want to abandon, reduce the capacity of, or remove a large raised reservoir, you must carry out certain activities.

Our role in managing and protecting groundwater

Advice for farmers on addressing challenges brought about by periods of dry weather such as grazing, watering and bedding.

During periods of very low rainfall groundwater levels can become exceptionally low. This may affect private water supplies.

Information about how we manage and monitor water resources in Wales.