SM1: 22 m clear of the highest tide in the London Bridge ledgers

SM1 on the relief of London, with a tide staff: 22 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in SM1, SM1 2NU, stands 22 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, SM1 4PB, stands 63 m above it.

Ground at eight in ten of its postcodes: between 36 m and 59 m, measured from Ordnance Datum; the middle one stands at 45 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
In Sutton.

Open SM1 on the map