W13: 11 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in W13, W13 0AL, stands 11 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, W13 8JJ, stands 46 m above it.
- Ground at eight in ten of its postcodes: between 22 m and 40 m, measured from Ordnance Datum; the middle one stands at 27 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Ealing.