RM3: 18 m clear of the highest tide in the London Bridge ledgers

RM3 on the relief of London, with a tide staff: 18 m above the 1953 tide, the highest in the ledgers.

The lowest postcode in RM3, RM3 0RR, stands 18 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, RM3 7LR, stands 75 m above it.

Ground at eight in ten of its postcodes: between 33 m and 58 m, measured from Ordnance Datum; the middle one stands at 42 m.
None lies in the Environment Agency's Flood Zone 3 from the sea.
In Havering.

Open RM3 on the map