Flood Alert Issued for Mansbridge and Riverside Park Along River Itchen

Source: Environment Agency · Southampton, Hampshire

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The Environment Agency has issued a flood alert for the Mansbridge and Riverside Park areas of Southampton due to high river levels and forecast high tides.

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

This notice was issued by Environment Agency on February 19, 2026 and geographically references Southampton, Hampshire. 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, Southampton) 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 (Severity Level 3) for the Solent and South Downs area, specifically targeting Mansbridge and Riverside Park. The alert was raised on February 16, 2026, following high river levels on the River Itchen.

Affected Areas

The primary areas affected include Mansbridge and Riverside Park within the county of Hampshire and the city of Southampton. Specific locations at risk include the access road and car parking areas near the White Swan Pub and the nearby car garage. Parts of Riverside Park are also expected to experience flooding.

What You Should Do

Residents and business owners in the affected area are advised to consider activating any flood protection products they may have, including specific defenses around the White Swan Pub. The Environment Agency is currently monitoring rainfall and river levels and is liaising with Southampton City Council regarding the operation of Woodmill.

Expected Conditions

River levels are expected to reach 4.65 metres Chart Datum (1.91 mAOD). Conditions may result in water being forced up through the floor of the White Swan Pub. While the high tide at 10:45 AM on February 17 is expected to be 10cm lower than previous peaks, further heavy rain forecast for Wednesday, February 18, is expected to increase the overall flood risk.

Timeline

The alert is currently active. High tides are forecast for 10:45 PM on February 16, 2026, and 00:45 AM on February 17, 2026. A subsequent high tide is expected at 10:45 AM on February 17. The Environment Agency expects to update this message by 6:00 PM on February 17, 2026, as they monitor the increased risk forecast for Wednesday.

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 Mansbridge and Riverside Park areas of Southampton due to high river levels and forecast 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 Southampton, Hampshire. 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.