Damflask Reservoir is an English water feature situated at grid reference SK277907 five miles (eight kilometres) west of the centre of Sheffield in the Loxley valley close to the village of Low Bradfield and within the city's boundaries. The reservoir has a capacity of 4,250.9 million litres (1,123.1 million gallons) and has a surface area of 47 hectares (116 acres) with a maximum depth of 27 metres (88 ft).