N9: 5.9 m clear of the highest tide in the London Bridge ledgers

N9 on the relief of London, with a tide staff: 5.9 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in N9, N9 0BD, stands 5.9 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, N9 9HS, stands 18 m above it.

Ground at eight in ten of its postcodes: between 12 m and 20 m, measured from Ordnance Datum; the middle one stands at 14 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
In Enfield.

Open N9 on the map