HA6: 50 m clear of the highest tide in the London Bridge ledgers

HA6 on the relief of London, with a tide staff: 50 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in HA6, HA6 2QP, stands 50 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, HA6 3RB, stands 105 m above it.

Ground at eight in ten of its postcodes: between 66 m and 92 m, measured from Ordnance Datum; the middle one stands at 74 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
In Hillingdon.

Open HA6 on the map