Environment Agency061FAG22OgValThames
Groundwater flooding in the Upper Og Valley: flood history since 2012
The Environment Agency has issued 11 flood alerts for Groundwater flooding in the Upper Og Valley since 26 Nov 2012, most often in January; the busiest year was 2012 (2).
Flood alerts only
The flood area
- Flood area
- Groundwater flooding in the Upper Og Valley
- Code
- 061FAG22OgVal
- Environment Agency area
- Thames
- County
- Swindon, Wiltshire
- River or sea
- Groundwater
- First in the history
- 26 Nov 2012
- Latest in the history file
- 23 Jan 2026
- Current status
- check-for-flooding.service.gov.uk (the Environment Agency's live page)
Flood alert, flood warning, severe flood warning: what each means
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.
How many alerts and warnings a year?
Flood alerts, flood warnings and severe flood warnings (updates not counted), by year. 2026 runs to the end of June.
The numbers
| Year | Alerts | Warnings | Severe |
|---|---|---|---|
| 2026 | 1 | 0 | 0 |
| 2024 | 1 | 0 | 0 |
| 2023 | 2 | 0 | 0 |
| 2021 | 1 | 0 | 0 |
| 2020 | 1 | 0 | 0 |
| 2019 | 1 | 0 | 0 |
| 2014 | 1 | 0 | 0 |
| 2013 | 1 | 0 | 0 |
| 2012 | 2 | 0 | 0 |
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.
When in the year?
All alerts and warnings since 2012 by month.
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.
Before July 2026: the latest in the history file
| Date | Level |
|---|---|
| 23 Jan 2026 | Flood alert |
| 2 Jan 2024 | Flood alert |
| 4 Nov 2023 | Flood alert |
| 2 Jan 2023 | Flood alert |
| 29 Jan 2021 | Flood alert |
| 15 Jan 2020 | Flood alert |
| 16 Dec 2019 | Flood alert |
| 9 Jan 2014 | Flood alert |
| 28 Jan 2013 | Flood alert |
| 24 Dec 2012 | Flood alert |
| 26 Nov 2012 | Flood alert |
Source: Environment Agency, Historic Flood Warnings (England); Environment Agency flood-monitoring API. Contains public sector information licensed under the Open Government Licence v3.0.