Live Environment Agency flood warnings for London, plus the river level on the non-tidal Thames at Kingston and Teddington.
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Live flood warnings for London, plus the river level on the non-tidal Thames at Kingston and Teddington. Central and east London's riverside is protected by the Thames Barrier, so the gauges here are the upstream reaches, where the river itself can rise after heavy rain.
No flood warnings or alerts in force
Levels are measured against each gauge’s usual range — “above typical” doesn’t mean flooding, but it’s the first thing that moves when water is on its way.
| Gauge | Speaks for | Level |
|---|---|---|
| Thames at Kingston | The non-tidal Thames through Kingston and Hampton Wick, south-west London. | Within typical range |
| Thames at Teddington Lock | Teddington Lock, the tidal limit of the Thames — the boundary between the river that rises with rain and the tidal river below. | Within typical range |
Central and east London's riverside is defended from North Sea surge tides by the Thames Barrier at Woolwich, which the Environment Agency closes when a dangerous tide is forecast. That is why this tool watches the river level upstream, at Kingston and Teddington, rather than the tidal gauges in the city — those rise and fall with every tide rather than with rainfall.
Most London flooding is not the river bursting its banks but intense summer downpours overwhelming drains and gullies, as in July 2021 when roads and Tube stations flooded across the city. Heavy-rain surface flooding can happen anywhere, with little warning, and may not show as a river warning here — check the official service below and your borough's alerts.
Sign up for free Environment Agency flood warnings for your area on the official service. In immediate danger from rising water, call 999.
Checked 30 June at 19:47. Uses Environment Agency flood and river level data from the real-time data API (Beta), Open Government Licence. Official warnings: check for flooding on GOV.UK.