N7: 21 m clear of the highest tide in the London Bridge ledgers

N7 on the relief of London, with a tide staff: 21 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in N7, N7 7NJ, stands 21 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, N7 0QT, stands 46 m above it.

Ground at eight in ten of its postcodes: between 28 m and 46 m, measured from Ordnance Datum; the middle one stands at 33 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
Mostly in Islington; partly in Camden.

Open N7 on the map