DA16: 20 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in DA16, DA16 3ET, stands 20 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, DA16 3RP, stands 65 m above it.
- Ground at eight in ten of its postcodes: between 44 m and 61 m, measured from Ordnance Datum; the middle one stands at 51 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- Mostly in Bexley; partly in Greenwich.