Flood Alert Issued for River Thame, Horsenden Stream, and Chalgrove Brook
This alert is no longer in effect.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, warning of high river levels and potential flooding through the weekend.
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 (Severity Level 3) for the River Thame, Horsenden Stream, and Chalgrove Brook. High river levels have been detected, which may lead to flooding in the region.
Affected Areas
The alert specifically affects geographic regions within Buckinghamshire, Hertfordshire, and Oxfordshire. Flooding of low-lying land and roads is expected to continue today, February 27, 2026, particularly in the area between Stadhampton and Dorchester.
What You Should Do
Residents and travelers in the affected areas are advised to take the following actions:
- Avoid Hazards: Stay away from low-lying footpaths and roads near rivers, as these may be flooded.
- Monitor Conditions: Visit River Levels Online for real-time updates on current water levels.
- Stay Alert: Be aware that river levels are expected to remain high and sensitive to additional rainfall over the coming days.
Expected Conditions
River levels are currently high on parts of the River Thame. The forecast indicates rain overnight on February 27, which could be heavy at times, followed by further rainfall over the weekend. These conditions are expected to keep river levels elevated.
Timeline
The alert was officially raised at 10:04 AM on February 27, 2026. The Environment Agency is monitoring rainfall and river levels and expects to provide an update by 12:00 PM on February 28, 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.