Bollinhurst Reservoir
Kettleshulme and Lyme Handley, United Kingdom
The Bollinhurst Reservoir was constructed in Lyme Park in 1872 for the Stockport District Waterworks Company. At the time of the First World War, it had a capacity of 84.46 million gallons.
Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).