SW14: no postcode below a spring high tide, the lowest 0.5 m above it

SW14 on the relief of London, with a tide staff: Its lowest postcode is 0.5 m above a spring high tide.

No postcode in SW14 stands below an ordinary spring high tide at London Bridge. The lowest, SW14 7QR, is 0.5 m above it and 0.9 m below the tide of 1 February 1953.

Ground at eight in ten of its postcodes: between 5.5 m and 18 m, measured from Ordnance Datum; the middle one stands at 6.6 m.
26 of 365 stand lower than the 1953 tide (5.41 m).
71 lie in the Environment Agency's Flood Zone 3 from the sea, mapped without defences.
In Richmond upon Thames.

Open SW14 on the map