57 tube stations are at high risk of flooding, according to an internal London Underground report seen by The Guardian.
High profile stations include Euston, King's Cross, Victoria, Waterloo, London Bridge, Finsbury Park, Seven Sisters, Stockwell and Clapham Common. From the Guardian's map we can also spot Bond Street, Tottenham Court Road, Holborn and Elephant and Castle, among others. There are another 23 stations at 'significant' flood risk. Some shafts and tunnel entrances have also been identified as being at risk.
The main risks are from flash flooding, caused by heavy rains, and burst water mains. The Circle and Hammersmith and City lines flooded in July 2015 because of a storm, and the Central line was disrupted in June 2012 following a burst pipe at Stratford.
LU has asked for £3m to investigate the scale of the problem, but fixing it would take a lot more.
When it comes to recent storms, London hasn't been affected as badly as other parts of the country. But with climate change expected to increase the severity of storms, it makes sense to make the tube network more resilient now.
Of course, the tube has flooded many times in its past. Take a look at some of the pre-war examples.