TW11: no postcode below a spring high tide, the lowest 1.0 m above it

TW11 on the relief of London, with a tide staff: Its lowest postcode is 1.0 m above a spring high tide.

No postcode in TW11 stands below an ordinary spring high tide at London Bridge. The lowest, TW11 8BN, is 1.0 m above it and 0.5 m below the tide of 1 February 1953.

Ground at eight in ten of its postcodes: between 7.1 m and 13 m, measured from Ordnance Datum; the middle one stands at 8.7 m.
9 of 556 stand lower than the 1953 tide (5.41 m).
45 lie in the Environment Agency's Flood Zone 3 from the sea, mapped without defences.
In Richmond upon Thames.

Open TW11 on the map