TN16: 115 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in TN16, TN16 3DR, stands 115 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, TN16 2JB, stands 231 m above it.
- Ground at eight in ten of its postcodes: between 143 m and 207 m, measured from Ordnance Datum; the middle one stands at 183 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Bromley.