SW20: 6.7 m clear of the highest tide in the London Bridge ledgers

SW20 on the relief of London, with a tide staff: 6.7 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in SW20, SW20 0AG, stands 6.7 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, SW20 8HN, stands 47 m above it.

Ground at eight in ten of its postcodes: between 14 m and 41 m, measured from Ordnance Datum; the middle one stands at 17 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
Mostly in Merton; partly in Kingston upon Thames.

Open SW20 on the map