E13: 171 of 583 postcodes stand below a spring high tide

The ground at 171 of E13's 583 postcodes (29%) is lower than an ordinary spring high tide at London Bridge (3.9 m above Ordnance Datum).

• Ground at eight in ten of its postcodes: between 1.6 m and 8.1 m, measured from Ordnance Datum; the middle one stands at 5.8 m.
• 249 of 583 stand lower than the 1953 tide (5.41 m).
• 98 lie in the Environment Agency's Flood Zone 3 from the sea, mapped without defences.
• In Newham.