IG2: 7.0 m clear of the highest tide in the London Bridge ledgers

The lowest postcode in IG2, IG2 6GT, stands 7.0 m above the highest tide in the London Bridge ledgers (5.41 m, 1 February 1953). The highest, IG2 6YD, stands 28 m above it.
- Ground at eight in ten of its postcodes: between 16 m and 27 m, measured from Ordnance Datum; the middle one stands at 22 m.
- None lies in the Environment Agency's Flood Zone 3 from the sea.
- In Redbridge.