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Water Supply: Reservoirs

Lord Campbell-Savours asked Her Majesty's Government:

The Parliamentary Under-Secretary of State, Department for Environment, Food and Rural Affairs (Lord Bach): Details, including name and location, of reservoirs subject to the Reservoirs Act 1975 are contained in the public registers maintained by the relevant authorities with responsibility for enforcing the provisions of the Act. In England and Wales the Environment Agency is the enforcement authority holding the data for each area in its 26 area offices. The 1975 Act does not extend to Northern Ireland. Reservoirs subject to the Act are those which hold, or are capable of holding, more than 25,000 cubic metres of water above the natural level of adjoining land. It would not be in the interests of national security to provide this information collectively in a publicly available source.

I am not aware of any arrangements in place for the collection of data on reservoirs which are not subject to the 1975 Act.

Lord Campbell-Savours asked Her Majesty's Government:

Lord Bach: Reservoirs subject to the Reservoirs Act 1975, regardless of ownership, are categorised according to the likely consequences of failure caused by floods or dam breach and are designed to enable a flood safely to pass through without damage to the dam and to minimise the impact downstream.



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