If you’ve ever wondered how water levels in the West India and Millwall Docks are regulated, then look no further than the Docklands Impounding Station.

More than 200 visitors were welcomed to the 85-year-old building on Saturday to see the results of restoration repairs by the Canal and River Trust.

Jon Guest, London waterway manager, said: “Every day thousands of people visit or cruise on our waterways without ever seeing all the hard work that goes on behind the scenes to look after this historic and remarkable infrastructure.

“By showcasing this work to the public we can give them a glimpse of the scale of work we did to keep the structure in perfect working order.”

The three pumps used to transfer water from the River Thames into the docks are the original ones built in 1929 and could fill an Olympic size swimming pool in nine minutes.

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