SE16: 730 of 1,105 postcodes stand below a spring high tide

The ground at 730 of SE16's 1,105 postcodes (66%) 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 1.5 m and 5.6 m, measured from Ordnance Datum; the middle one stands at 3.0 m.
• 926 of 1,105 stand lower than the 1953 tide (5.41 m).
• 980 lie in the Environment Agency's Flood Zone 3 from the sea, mapped without defences.
• Mostly in Southwark; partly in Lewisham.