Before 1987 it was leaking 540 litres per second. In that year Ground-penetrating radar was used successfully to isolate the leaks.
MIDLANDS Millennium New Life Flowed with the Water; Chris Upton Looks Back More Than 150 Years When It Was Realised the Midlands Would Need Imported Supplies of Fresh Water to Stay Healthy. Ross Reyburn Describes the Area That Still Supplies That Water, the Elan Valley in Wales
Jul 10, 1999; ABy the middle of the 19th century some rather chilling statistics were becoming apparent. If you lived in the country - Rutland...