Flood Alert Issued for River Thames Between Hampton and Teddington

Source: Environment Agency · Greater London and Surrey

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A flood alert is in effect for the River Thames from Hampton to Teddington, with high tides and upstream flows threatening low-lying land and roads through February 24.

What this Environment Agency flood warning tells you, and what most readers miss

This notice was issued by Environment Agency on February 24, 2026 and geographically references Greater London and Surrey. Its severity classification of "medium" signals how the issuing agency weighs the risk of harm if no action is taken — "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to — Flood Warnings — determines the regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to read it as a data point about the issuing system: how quickly Environment Agency detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action — a single localized Environment Agency flood warning is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.

For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (weather, alert, Flood Alert, Thames) map to related alerts in the same area of risk — browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.

Alert Details

The Environment Agency has issued a flood alert for the River Thames. This alert, classified as severity level 3, was raised on February 23, 2026, in response to high river levels and tidal conditions.

Affected Areas

The alert covers the River Thames from Hampton and Thames Ditton to Teddington. Impacted regions include Greater London, Kingston upon Thames, Richmond upon Thames, and Surrey. Specific focus is placed on low-lying land and roads between Thames Ditton and Teddington.

What You Should Do

Residents and visitors are advised to avoid using low-lying footpaths and any bridges near local watercourses. The Environment Agency is currently monitoring rainfall and river levels while liaising with emergency services and local authorities. For the latest information, individuals should check river levels online.

Expected Conditions

Flooding is possible due to a combination of high tides and significant river flows from upstream. While very little rainfall is forecast over the next few days, river levels remain high.

  • Tide 1 (Feb 23, 6:45 PM): Expected levels between 4.98m and 5.12m.
  • Tide 2 (Feb 24, 6:30 AM): Expected levels between 5.03m and 5.17m.

River levels are expected to fall slowly following these tidal peaks.

Timeline

The alert is effective as of February 23, 2026. High-risk periods coincide with the high tides on the evening of February 23 and the morning of February 24. An update to this message is scheduled by 8:00 PM on February 24, 2026, or sooner if the situation changes.

Original source: Environment Agency Official Notice ↗

All Flood Warnings →

Frequently Asked Questions

Common questions about this Environment Agency flood warning.

What is this Environment Agency flood warning about?
A flood alert is in effect for the River Thames from Hampton to Teddington, with high tides and upstream flows threatening low-lying land and roads through February 24.
Which agency issued this alert?
This alert was issued by Environment Agency. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "medium" severity. Stay informed and follow agency guidance.
What area is affected?
This alert affects Greater London and Surrey. Check with Environment Agency for the most current geographic scope.
Where can I find more Flood Warnings updates?
Browse the full Flood Warnings feed on Areazine at areazine.com/uk/floods/ for the latest updates from Environment Agency and other agencies.