With The Howden and Derwent reservoirs being constructed in 1912 and 1916 consecutively, a larger reservoir was needed to supply Sheffield.
The Ladybower reservoir was constructed and completed in 1945, however it took 2 years for it to fill up.
The Howden Dam can be seen in the very distance in the picture opposite, in the foreground are the remains of the railway gantry supports nearly one hundred years after their construction.
These trains were used to bring in stone, coal, timber and workmen to the dam site.
The two pipes pictured opposite carry water from the Derwent and Howden reservoirs to nearby Bamford for treatment.
170 million litres of treated water goes to Derbyshire, Leicester and Nottingham whilst 450 million litres of untreated water goes to Sheffield.
Capacities when first filled:
The Howden reservoir - 2050 Million gallons The Derewnt reservoir - 2155 Million gallons
These figures realistically have to be reduced slightly now due to silt forming over the years.