N3: 41 m clear of the highest tide in the London Bridge ledgers

N3 on the relief of London, with a tide staff: 41 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in N3, N3 3GR, stands 41 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, N3 2PN, stands 86 m above it.

Ground at eight in ten of its postcodes: between 63 m and 90 m, measured from Ordnance Datum; the middle one stands at 79 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
In Barnet.

Open N3 on the map