Flood Alert Issued for Tidal River Avon Affecting Bristol, Pill, and Shirehampton

Source: Environment Agency · Bristol and North Somerset

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The Environment Agency has issued a flood alert for the Tidal River Avon on March 21, 2026, warning of potential flooding due to high tides.

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

This notice was issued by Environment Agency on April 5, 2026 and geographically references Bristol and North Somerset. 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, FloodAlert, Bristol) 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 Tidal River Avon at Bristol, Pill, and Shirehampton. This alert (ID: 112WATAVN1) indicates that flooding is possible due to high tides expected on the morning of March 21, 2026.

Affected Areas

The alert covers geographic regions within the City of Bristol, North Somerset, and South Gloucestershire. Specific areas most at risk include:

  • The tidal River Avon from Sea Mills to Conham in Bristol.
  • The area between the Avonmouth Bridge and Shirehampton Park.
  • The communities of Pill and Shirehampton.

What You Should Do

Residents and visitors in the warning area are advised to take the following precautions:

  • Avoid coastal footpaths, which may be flooded and hazardous.
  • Monitor local conditions as the situation develops.
  • Follow any further guidance from the Environment Agency, which is closely monitoring the river levels.

Expected Conditions

A peak tidal level is forecast at Avonmouth at 08:45 AM on March 21, 2026. The forecast high water level is 7.40 mAODN (height above average sea level). Weather conditions at the time of the peak are expected to include North East force 2 winds.

Timeline

Flooding is considered possible between 08:30 and 09:30 on March 21, 2026. The Environment Agency expects to update this message by 1:00 PM on March 21, 2026, or as 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?
The Environment Agency has issued a flood alert for the Tidal River Avon on March 21, 2026, warning of potential flooding due to high tides.
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 Bristol and North Somerset. 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.