Flood Alert Issued for River Thame and Chalgrove Brook in 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This alert is no longer in effect.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 and surrounding streams, warning of high river levels and potential flooding of roads and 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 (Severity Level 3) for the River Thame, Horsenden Stream, and Chalgrove Brook. The alert was officially raised at 10:16 AM on February 19, 2026, in response to rising river levels.
Affected Areas
The geographic scope of this alert includes regions within Buckinghamshire, Hertfordshire, and Oxfordshire. Specifically, flooding is expected to continue today in the Thame, Stadhampton, and Dorchester areas, impacting low-lying land and local roads.
What You Should Do
Residents in the affected areas are advised to avoid using low-lying footpaths and roads near rivers, as these may be submerged. The Environment Agency recommends checking "River Levels Online" for real-time updates on current conditions.
Expected Conditions
River levels are currently high on parts of the River Thame. While predominantly light rain is forecast over the next 48 hours, the Environment Agency notes that rainfall may be heavy at times. Consequently, river levels are expected to remain high and will be sensitive to any further precipitation over the coming days.
Timeline
The alert is effective as of February 19, 2026. Officials are monitoring rainfall and river levels continuously and expect to provide an updated message by 12:00 PM on February 20, 2026, or sooner if the situation changes.
Original source: Environment Agency Official Notice ↗
Related Flood Warnings
All Flood Warnings →Frequently Asked Questions
Common questions about this Environment Agency flood warning.