River Great Ouse at Castle Mill
The River Great Ouse at Castle Mill read 0.139 m at .
- Newest reading
- 0.139 mProvisional
- Change
- -0.011 m in a day
- +0.015 m in a week
That is below the typical range of 0.192 m to 0.264 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 | |
| 0.135 m | |
| 0.140 m | |
| 0.132 m | |
| 0.139 m | |
| 0.129 m | |
| 0.137 m | |
| 0.141 m | |
| 0.143 m | |
| 0.135 m | |
| 0.126 m | |
| 0.134 m | |
| 0.136 m | |
| 0.133 m | |
| 0.133 m | |
| 0.131 m | |
| 0.126 m | |
| 0.123 m | |
| 0.120 m | |
| 0.124 m | |
| 0.122 m | |
| 0.120 m | |
| 0.129 m | |
| 0.128 m | |
| 0.127 m | |
| 0.122 m | |
| 0.133 m | |
| 0.140 m | |
| 0.142 m | |
| 0.136 m | |
| 0.132 m | |
| no value | |
| no value |
Normal range and official levels
- Typical range, low: 0.192 m. The newest reading is 0.053 m below it.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
- Typical range, high: 0.264 m. The newest reading is 0.125 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: 0.182 m at 23:15 BST on 5 October 2025. Provisional data.
- Lowest reading in our series since 2 October 2025: 0.02 m at 10:15 BST on 8 September 2026. Provisional data.
- Highest daily average in our series since 2 October 2025: 0.146 m on 6 October 2025. Provisional data.
- Lowest daily average in our series since 2 October 2025: 0.089 m on 2 October 2025. Provisional data.
As the source publishes them
- Lowest on record: 0.123 m, on 16 November 2007.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
- Highest in recent years: 0.628 m, on 28 February 2011.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
- Highest on record: 1.121 m, on 11 February 2024.Set by This uses Environment Agency flood and river level data from the real-time data API (Beta).
Our series holds a lower value (0.02 m) than the record the Environment Agency publishes (0.123 m); the published value may come from another period or may not be updated yet.
About this gauge
Castle Mill is a gauge on the River Great Ouse in the United Kingdom.
It lies at 52.1456° N, 0.4056° 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. Its zero lies at 21.8 mAOD.
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.