Kempton Park Reservoirs
Spelthorne, United Kingdom · built 1897
Kempton Park Reservoirs are a Site of Special Scientific Interest in the London Borough of Hounslow and Kempton Park in Surrey. It is owned by Thames Water. It is part of South West London Waterbodies Ramsar site and Special Protection Area Kempton Park East reservoir is also a local nature reserve.
Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).