The first 2 dams – Howden and Derwent – were built between 1901 and 1916. Work started on the third dam – Ladybower – in 1935. Construction continued throughout World War 2 despite the difficulty in finding materials and labour.

Who built Derwent Dam?

Sandeman designed the very similar Howden and Derwent dams, both of masonry, with architectural details by William Flockhart (1852-1913). In May 1901, construction commenced for the Howden project. Work on Derwent Dam began the following year. The challenge of the two sites was their isolation.

Who owns Derwent Reservoir?

The reservoir is a key part of the water supply network in north east England (which is owned and managed by Northumbrian Water) as it is the principal water source for the Tyne and Wear metropolitan area supplying 28,000,000 imperial gallons (130,000,000 l; 34,000,000 US gal) per day.