Flood Alert Issued for River Thame and Chalgrove Brook Across Buckinghamshire, Hertfordshire, and Oxfordshire
This alert is no longer in effect.
Environment Agency issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this Environment Agency flood warning directly from Environment Agency's official public data feed. See our methodology for full source attribution and refresh cadence.
The Environment Agency has issued a flood alert for the River Thame, Horsenden Stream, and Chalgrove Brook, warning of high river levels and potential flooding of low-lying land and roads.
Read this weather record in 30 seconds
- Record type
- Flood Alert
- Affected area
- Buckinghamshire, Hertfordshire, and Oxfordshire
- Issued
- April 6, 2026
- Issuing authority
- Environment Agency
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Buckinghamshire, Hertfordshire, and Oxfordshire.
Alert Details
A Flood Alert (Severity Level 3) has been issued by the Environment Agency for the Thames area. This alert indicates that high river levels may lead to flooding in the vicinity of the River Thame, Horsenden Stream, and Chalgrove Brook.
Affected Areas
The alert covers specific geographic regions within Buckinghamshire, Hertfordshire, and Oxfordshire. Flooding of low-lying land and roads is specifically expected to continue today between Stadhampton and Dorchester.
What You Should Do
Residents and travelers in the affected areas are advised to avoid using low-lying footpaths and roads near rivers, as these may be flooded. For the most current information, individuals should monitor river levels via the River Levels Online service.
Expected Conditions
River levels are currently high on parts of the River Thame. The forecast indicates rain overnight on February 26, 2026, with further precipitation expected tomorrow and into the weekend. Officials expect river levels to remain high and sensitive to additional rainfall over the coming days.
Timeline
The alert was officially raised at 10:59 AM on February 26, 2026. Flooding of low-lying areas is expected to continue through the day, with river levels remaining high through the weekend. The Environment Agency will provide an update by 12:00 PM on February 27, 2026, or sooner if the situation changes.
Original source: Environment Agency Official Notice ↗
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Common questions about this Environment Agency flood warning.