RM12: no postcode below a spring high tide, the lowest 0.8 m above it

RM12 on the relief of London, with a tide staff: Its lowest postcode is 0.8 m above a spring high tide.

No postcode in RM12 stands below an ordinary spring high tide at London Bridge. The lowest, RM12 4EQ, is 0.8 m above it and 0.6 m below the tide of 1 February 1953.

Ground at eight in ten of its postcodes: between 10 m and 25 m, measured from Ordnance Datum; the middle one stands at 14 m.
One of 626 stands lower than the 1953 tide (5.41 m).
None lies in the Environment Agency's Flood Zone 3 from the sea.
In Havering.

Open RM12 on the map