SW9: 18 of 968 postcodes stand below a spring high tide

The ground at 18 of SW9's 968 postcodes (2%) 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 5.1 m and 15 m, measured from Ordnance Datum; the middle one stands at 9.6 m.
• 146 of 968 stand lower than the 1953 tide (5.41 m).
• None lies in the Environment Agency's Flood Zone 3 from the sea.
• In Lambeth.