It contains 900,000m³ of water received from the Elan Valley Reservoirs, away, in Wales, which arrives by the power of gravity alone, dropping 171 feet (52 m) - an average gradient of 1 in 2,300.

Before 1987 it was leaking 540 litres per second. In that year Ground-penetrating radar was used successfully to isolate the leaks.

See also

• List of reservoirs and dams in the United Kingdom
• Frankley Water Treatment Works

External links

• History

References