§ Mr. Wigleyasked the Secretary of State for the Environment if he will publish in the Official Report a list of all abstraction works or other units in England at which water is abstracted from rivers upon which there are regulating reservoirs in Wales, together with an estimate of the average annual volume of water in millions of gallons abstracted by each of them.
§ Mr. KingThe information is not available in the form requested, but the following table gives details of water taken for public supply by the North-West water authority in 1980 and Severn-Trent water authority in 1981.
Source and location of abstraction point Receiving water authority Actual annual volume of water abstracted* River Dee Huntington NWWA 24,150 Deeside and Heronbridge at Chester NWWA 13,130 Shropshire Union Canal (Hurlesden) NWWA 2,975 Alwen reservoir NWWA 1,470 Lake Vyrnwy NWWA 16,860 River Severn (1) Shrewsbury Severn-Trent 1,598 Ironbridge CEGB 1,991 Hampton Loade Severn-Trent 9,129 Trimpley Severn-Trent 4 Worcester Severn-Trent 2,497 Upton Severn-Trent 6,568 The Mythe (Tewkesbury) Severn-Trent 6,873 Bristol Waterworks Sharpness Canal (Purton) Company 7,226 * Million gallons per year. These abstractions are supported, in part, by English and Welsh tributaries which have no regulatory reservoirs. Apart from its river regulatory function, the storage capacity of the Clywedog reservoir protects the Vale of Powys from flooding.