TW4: 12 m clear of the highest tide in the London Bridge ledgers

TW4 on the relief of London, with a tide staff: 12 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in TW4, TW4 5PF, stands 12 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, TW4 7PE, stands 19 m above it.

Ground at eight in ten of its postcodes: between 19 m and 24 m, measured from Ordnance Datum; the middle one stands at 22 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
Mostly in Hounslow; partly in Richmond upon Thames.

Open TW4 on the map