River Thames at Old Windsor Lock
The River Thames at Old Windsor Lock read 0.237 m at .
- Newest reading
- 0.237 mProvisional
- Change
- +0.013 m in a day
- +0.01 m in a week
That is within the typical range of 0.096 m to 0.349 m that the Environment Agency gives for this station.
The last 90 days
- Level
- Our record
Table: The last 90 days
| Day | Daily average (m) |
|---|---|
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| no value | |
| 0.249 m | |
| 0.230 m | |
| 0.233 m | |
| 0.233 m | |
| 0.232 m | |
| 0.230 m | |
| 0.231 m | |
| 0.222 m | |
| 0.210 m | |
| 0.246 m | |
| 0.214 m | |
| 0.245 m | |
| 0.251 m | |
| 0.249 m | |
| 0.250 m | |
| 0.251 m | |
| 0.247 m | |
| 0.242 m | |
| 0.244 m | |
| 0.243 m | |
| 0.236 m | |
| 0.239 m | |
| 0.239 m | |
| 0.239 m | |
| 0.237 m | |
| 0.242 m | |
| 0.245 m | |
| 0.246 m | |
| 0.239 m | |
| 0.236 m | |
| no value | |
| no value |
Normal range and official levels
- Typical range, low: 0.096 m. The newest reading is 0.141 m above it.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
- Typical range, high: 0.349 m. The newest reading is 0.112 m below it.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
Records
- Highest reading in our series since 2 October 2025: 0.31 m at 16:45 BST on 16 September 2026. Provisional data.
- Lowest reading in our series since 2 October 2025: 0.092 m at 12:15 BST on 3 October 2025. Provisional data.
- Highest daily average in our series since 2 October 2025: 0.251 m on 19 September 2026. Provisional data.
- Lowest daily average in our series since 2 October 2025: 0.161 m on 2 October 2025. Provisional data.
As the source publishes them
- Lowest on record: -0.404 m, on 4 June 2003.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
- Highest in recent years: 1.941 m, on 11 February 2014.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
- Highest on record: 1.941 m, on 11 February 2014.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
About this gauge
Old Windsor Lock is a gauge on the River Thames in the United Kingdom.
It lies at 51.4632° N, 0.5691° W.
Its readings come from the Environment Agency.
The gauge reads the height of the water above a fixed zero, not the depth of the river.
The Environment Agency says its real-time data should not be relied upon for safety critical applications.
The newest reading is provisional: the source may still correct it.