N11: 22 m clear of the highest tide in the London Bridge ledgers

N11 on the relief of London, with a tide staff: 22 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in N11, N11 1UZ, stands 22 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, N11 3DS, stands 61 m above it.

Ground at eight in ten of its postcodes: between 36 m and 62 m, measured from Ordnance Datum; the middle one stands at 49 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
Mostly in Barnet; partly in Enfield.

Open N11 on the map