Flood Alert Issued for River Thame and Chalgrove Brook in Oxfordshire, Buckinghamshire, and Hertfordshire
This alert is no longer in effect.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 and Chalgrove Brook due to high river levels, with flooding of roads and low-lying land possible 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 for the River Thame, Horsenden Stream, and Chalgrove Brook. The alert was officially raised at 9:24 AM on March 14, 2026, following reports of high river levels that may lead to flooding in the region.
Affected Areas
The alert covers geographic areas within Buckinghamshire, Hertfordshire, and Oxfordshire. Specific concern is noted for the Chalgrove Brook through Chalgrove. While the River Thame is currently below the flood risk threshold, flooding of low-lying land and roads in the Chalgrove area remains possible today.
What You Should Do
Residents and visitors in the affected regions are advised to take the following precautions:
- Avoid using low-lying footpaths and roads near rivers, as these areas may be submerged.
- Monitor local weather reports and river conditions.
- Visit River Levels Online for real-time updates on water levels in your specific area.
Expected Conditions
River levels are currently high on the Chalgrove Brook. Although the forecast for Saturday, March 14, is mostly dry with only a chance of showers, river levels are expected to remain high over the coming days. The Environment Agency notes that river levels remain highly sensitive to further rainfall.
Timeline
The alert is effective as of March 14, 2026. Further rain is forecast for Sunday, March 15, which may sustain or increase current river levels. This message is scheduled to be updated by 6:00 PM on March 14, 2026, or sooner if the situation changes.
Original source: Environment Agency Official Notice ↗
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