Flood Alert Issued for River Thame, Horsenden Stream, and Chalgrove Brook in Oxfordshire and Surrounding 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This alert is no longer in effect.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 on the Chalgrove Brook.
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. This alert was officially raised at 8:21 AM on March 7, 2026, following reports of high river levels that may lead to flooding in the region.
Affected Areas
The geographic scope of this alert includes regions within Buckinghamshire, Hertfordshire, and Oxfordshire. Specifically, officials have identified high levels on the Chalgrove Brook through Chalgrove. While levels along the River Thame are currently below the flood risk threshold, flooding of low-lying land and roads remains a possibility throughout the Chalgrove area.
What You Should Do
Residents and travelers in the affected areas are advised to take the following precautions:
- Avoid using low-lying footpaths and roads near rivers, as these areas may be flooded.
- Monitor current river conditions by visiting River Levels Online for real-time updates.
- Remain vigilant as the situation develops, even if local conditions appear dry.
Expected Conditions
River levels are currently high on the Chalgrove Brook. Although the forecast predicts a predominantly dry day today and tomorrow, river levels are expected to fall very slowly over the coming days. Flooding is primarily expected to impact low-lying land and transport routes rather than residential properties at this stage.
Timeline
The alert is effective as of March 7, 2026. The Environment Agency is actively monitoring rainfall and river levels and expects the current conditions to persist with a slow decline in water levels. An update to this message is scheduled to be provided by 12:00 PM on March 8, 2026, or sooner if the situation changes significantly.
Original source: Environment Agency Official Notice ↗
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