Flood Alert Issued for River Thame, Horsenden Stream, and Chalgrove Brook in Three Counties
This alert is no longer in effect.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 parts of Buckinghamshire, Hertfordshire, and Oxfordshire due to high river levels and expected flooding of low-lying land.
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
The Environment Agency has issued a flood alert for the River Thame, Horsenden Stream, and Chalgrove Brook. This alert indicates that high river levels may lead to flooding in the region. The alert was officially raised on February 28, 2026, at 10:29 AM.
Affected Areas
The alert covers geographic regions within Buckinghamshire, Hertfordshire, and Oxfordshire. Specifically, river levels are reported as high on parts of the River Thame in Dorchester. The warning encompasses the River Thame, Horsenden Stream, and Chalgrove Brook areas within the Thames agency district.
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 areas may be flooded. The Environment Agency recommends monitoring current conditions through the River Levels Online service for the latest updates.
Expected Conditions
Flooding of low-lying land and roads is expected to continue throughout Saturday, February 28, 2026. The current weather forecast predicts further light rain over the weekend. Officials expect river levels to remain high and sensitive to any additional rainfall over the coming days.
Timeline
The alert is currently in effect as of February 28, 2026. The Environment Agency is monitoring rainfall and river levels and expects the situation to persist through the weekend. A formal update to this message is scheduled to be provided by 12:00 PM on February 29, 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.