Lockwood Reservoir is located in Walthamstow in the London Borough of Waltham Forest.

[3] The reservoir is a Site of Special Scientific Interest (SSSI).

In 1897, Lockwood was the last reservoir to be created and also the largest – covering 30 hectares and excavated to a depth of around 8 metres.

Named after one of the ELWC’s directors, it was a major engineering feat for its day - requiring a huge labour force of 1,250 men.

Unlike the first reservoirs, which were dug mainly by hand, Lockwood was constructed with plenty of steam-powered pumps, engines and cranes - as well as a team of 50 horses!