River level Addlestone Bourne at Grants Bridge

Check for flood warnings in this area

Latest recorded level 0.34m at 4:45am Sunday 25 July 2021.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.55m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2021-07-25T03:45Z	0.339	false
2021-07-25T03:30Z	0.338	false
2021-07-25T03:15Z	0.338	false
2021-07-25T03:00Z	0.337	false
2021-07-25T02:45Z	0.338	false
2021-07-25T02:30Z	0.337	false
2021-07-25T02:15Z	0.338	false
2021-07-25T02:00Z	0.339	false
2021-07-25T01:45Z	0.338	false
2021-07-25T01:30Z	0.337	false
2021-07-25T01:15Z	0.338	false
2021-07-25T01:00Z	0.338	false
2021-07-25T00:45Z	0.339	false
2021-07-25T00:30Z	0.338	false
2021-07-25T00:15Z	0.338	false
2021-07-25T00:00Z	0.337	false
2021-07-24T23:45Z	0.337	false
2021-07-24T23:30Z	0.338	false
2021-07-24T23:15Z	0.337	false
2021-07-24T23:00Z	0.336	false
2021-07-24T22:45Z	0.338	false
2021-07-24T22:30Z	0.338	false
2021-07-24T22:15Z	0.337	false
2021-07-24T22:00Z	0.337	false
2021-07-24T21:45Z	0.338	false
2021-07-24T21:30Z	0.337	false
2021-07-24T21:15Z	0.338	false
2021-07-24T21:00Z	0.338	false
2021-07-24T20:45Z	0.337	false
2021-07-24T20:30Z	0.338	false
2021-07-24T20:15Z	0.339	false
2021-07-24T20:00Z	0.338	false
2021-07-24T19:45Z	0.338	false
2021-07-24T19:30Z	0.339	false
2021-07-24T19:15Z	0.338	false
2021-07-24T19:00Z	0.34	false
2021-07-24T18:45Z	0.34	false
2021-07-24T18:30Z	0.339	false
2021-07-24T18:15Z	0.338	false
2021-07-24T18:00Z	0.339	false
2021-07-24T17:45Z	0.339	false
2021-07-24T17:30Z	0.338	false
2021-07-24T17:15Z	0.338	false
2021-07-24T17:00Z	0.339	false
2021-07-24T16:45Z	0.338	false
2021-07-24T16:30Z	0.34	false
2021-07-24T16:15Z	0.338	false
2021-07-24T16:00Z	0.338	false
2021-07-24T15:45Z	0.338	false
2021-07-24T15:30Z	0.339	false
2021-07-24T15:15Z	0.34	false
2021-07-23T23:45Z	0.333	false
2021-07-23T23:30Z	0.333	false
2021-07-23T23:15Z	0.332	false
2021-07-23T23:00Z	0.333	false
2021-07-23T22:45Z	0.333	false
2021-07-23T22:30Z	0.332	false
2021-07-23T22:15Z	0.332	false
2021-07-23T22:00Z	0.332	false
2021-07-23T21:45Z	0.332	false
2021-07-23T21:30Z	0.332	false
2021-07-23T21:15Z	0.33	false
2021-07-23T21:00Z	0.332	false
2021-07-23T20:45Z	0.331	false
2021-07-23T20:30Z	0.331	false
2021-07-23T20:15Z	0.331	false
2021-07-23T20:00Z	0.33	false
2021-07-23T19:45Z	0.33	false
2021-07-23T19:30Z	0.331	false
2021-07-23T19:15Z	0.33	false
2021-07-23T19:00Z	0.329	false
2021-07-23T18:45Z	0.328	false
2021-07-23T18:30Z	0.331	false
2021-07-23T18:15Z	0.332	false
2021-07-23T18:00Z	0.329	false
2021-07-23T17:45Z	0.33	false
2021-07-23T17:30Z	0.33	false
2021-07-23T17:15Z	0.332	false
2021-07-23T17:00Z	0.331	false
2021-07-23T16:45Z	0.332	false
2021-07-23T16:30Z	0.332	false
2021-07-23T16:15Z	0.332	false
2021-07-23T16:00Z	0.332	false
2021-07-23T15:45Z	0.332	false
2021-07-23T15:30Z	0.332	false
2021-07-23T15:15Z	0.332	false
2021-07-23T15:00Z	0.333	false
2021-07-23T14:45Z	0.331	false
2021-07-23T14:30Z	0.332	false
2021-07-23T14:15Z	0.333	false
2021-07-23T14:00Z	0.334	false
2021-07-23T13:45Z	0.333	false
2021-07-23T13:30Z	0.334	false
2021-07-23T13:15Z	0.333	false
2021-07-23T13:00Z	0.333	false
2021-07-23T12:45Z	0.334	false
2021-07-23T12:30Z	0.333	false
2021-07-23T12:15Z	0.333	false
2021-07-23T12:00Z	0.332	false
2021-07-23T11:45Z	0.332	false
2021-07-23T11:30Z	0.332	false
2021-07-23T11:15Z	0.331	false
2021-07-23T11:00Z	0.334	false
2021-07-23T10:45Z	0.335	false
2021-07-23T10:30Z	0.334	false
2021-07-23T10:15Z	0.333	false
2021-07-23T10:00Z	0.334	false
2021-07-23T09:45Z	0.335	false
2021-07-23T09:30Z	0.335	false
2021-07-23T09:15Z	0.336	false
2021-07-23T09:00Z	0.336	false
2021-07-23T08:45Z	0.336	false
2021-07-23T08:30Z	0.336	false
2021-07-23T08:15Z	0.336	false
2021-07-23T08:00Z	0.335	false
2021-07-23T07:45Z	0.336	false
2021-07-23T07:30Z	0.335	false
2021-07-23T07:15Z	0.335	false
2021-07-23T07:00Z	0.334	false
2021-07-23T06:45Z	0.335	false
2021-07-23T06:30Z	0.335	false
2021-07-23T06:15Z	0.334	false
2021-07-23T06:00Z	0.334	false
2021-07-23T05:45Z	0.334	false
2021-07-23T05:30Z	0.333	false
2021-07-23T05:15Z	0.335	false
2021-07-23T05:00Z	0.334	false
2021-07-23T04:45Z	0.334	false
2021-07-23T04:30Z	0.333	false
2021-07-23T04:15Z	0.333	false
2021-07-23T04:00Z	0.335	false
2021-07-23T03:45Z	0.333	false
2021-07-23T03:30Z	0.334	false
2021-07-23T03:15Z	0.333	false
2021-07-23T03:00Z	0.334	false
2021-07-23T02:45Z	0.333	false
2021-07-23T02:30Z	0.333	false
2021-07-23T02:15Z	0.333	false
2021-07-23T02:00Z	0.333	false
2021-07-23T01:45Z	0.333	false
2021-07-23T01:30Z	0.332	false
2021-07-23T01:15Z	0.333	false
2021-07-23T01:00Z	0.333	false
2021-07-23T00:45Z	0.333	false
2021-07-23T00:30Z	0.333	false
2021-07-23T00:15Z	0.331	false
2021-07-23T00:00Z	0.333	false
2021-07-22T23:45Z	0.333	false
2021-07-22T23:30Z	0.331	false
2021-07-22T23:15Z	0.333	false
2021-07-22T23:00Z	0.332	false
2021-07-22T22:45Z	0.331	false
2021-07-22T22:30Z	0.332	false
2021-07-22T22:15Z	0.333	false
2021-07-22T22:00Z	0.332	false
2021-07-22T21:45Z	0.332	false
2021-07-22T21:30Z	0.332	false
2021-07-22T21:15Z	0.332	false
2021-07-22T21:00Z	0.331	false
2021-07-22T20:45Z	0.332	false
2021-07-22T20:30Z	0.331	false
2021-07-22T20:15Z	0.332	false
2021-07-22T20:00Z	0.332	false
2021-07-22T19:45Z	0.332	false
2021-07-22T19:30Z	0.331	false
2021-07-22T19:15Z	0.331	false
2021-07-22T19:00Z	0.331	false
2021-07-22T18:45Z	0.332	false
2021-07-22T18:30Z	0.33	false
2021-07-22T18:15Z	0.33	false
2021-07-22T18:00Z	0.328	false
2021-07-22T17:45Z	0.325	false
2021-07-22T17:30Z	0.323	false
2021-07-22T17:15Z	0.322	false
2021-07-22T17:00Z	0.322	false
2021-07-22T16:45Z	0.323	false
2021-07-22T16:30Z	0.323	false
2021-07-22T16:15Z	0.323	false
2021-07-22T16:00Z	0.324	false
2021-07-22T15:45Z	0.325	false
2021-07-22T15:30Z	0.326	false
2021-07-22T15:15Z	0.327	false
2021-07-22T15:00Z	0.328	false
2021-07-22T14:45Z	0.33	false
2021-07-22T14:30Z	0.33	false
2021-07-22T14:15Z	0.332	false
2021-07-22T14:00Z	0.334	false
2021-07-22T13:45Z	0.335	false
2021-07-22T13:30Z	0.336	false
2021-07-22T13:15Z	0.337	false
2021-07-22T13:00Z	0.34	false
2021-07-22T12:45Z	0.338	false
2021-07-22T12:30Z	0.335	false
2021-07-22T12:15Z	0.335	false
2021-07-22T12:00Z	0.335	false
2021-07-22T11:45Z	0.335	false
2021-07-22T11:30Z	0.335	false
2021-07-22T11:15Z	0.335	false
2021-07-22T11:00Z	0.335	false
2021-07-22T10:45Z	0.336	false
2021-07-22T10:30Z	0.335	false
2021-07-22T10:15Z	0.335	false
2021-07-22T10:00Z	0.336	false
2021-07-22T09:45Z	0.336	false
2021-07-22T09:30Z	0.335	false
2021-07-22T09:15Z	0.336	false
2021-07-22T09:00Z	0.334	false
2021-07-22T08:45Z	0.335	false
2021-07-22T08:30Z	0.336	false
2021-07-22T08:15Z	0.336	false
2021-07-22T08:00Z	0.335	false
2021-07-22T07:45Z	0.336	false
2021-07-22T07:30Z	0.336	false
2021-07-22T07:15Z	0.335	false
2021-07-22T07:00Z	0.336	false
2021-07-22T06:45Z	0.336	false
2021-07-22T06:30Z	0.336	false
2021-07-22T06:15Z	0.335	false
2021-07-22T06:00Z	0.336	false
2021-07-22T05:45Z	0.336	false
2021-07-22T05:30Z	0.335	false
2021-07-22T05:15Z	0.336	false
2021-07-22T05:00Z	0.336	false
2021-07-22T04:45Z	0.337	false
2021-07-22T04:30Z	0.336	false
2021-07-22T04:15Z	0.335	false
2021-07-22T04:00Z	0.336	false
2021-07-22T03:45Z	0.336	false
2021-07-22T03:30Z	0.335	false
2021-07-22T03:15Z	0.335	false
2021-07-22T03:00Z	0.335	false
2021-07-22T02:45Z	0.335	false
2021-07-22T02:30Z	0.335	false
2021-07-22T02:15Z	0.335	false
2021-07-22T02:00Z	0.336	false
2021-07-22T01:45Z	0.335	false
2021-07-22T01:30Z	0.334	false
2021-07-22T01:15Z	0.335	false
2021-07-22T01:00Z	0.335	false
2021-07-22T00:45Z	0.333	false
2021-07-22T00:30Z	0.335	false
2021-07-22T00:15Z	0.333	false
2021-07-22T00:00Z	0.334	false
2021-07-21T23:45Z	0.335	false
2021-07-21T23:30Z	0.335	false
2021-07-21T23:15Z	0.335	false
2021-07-21T23:00Z	0.335	false
2021-07-21T22:45Z	0.334	false
2021-07-21T22:30Z	0.334	false
2021-07-21T22:15Z	0.333	false
2021-07-21T22:00Z	0.334	false
2021-07-21T21:45Z	0.334	false
2021-07-21T21:30Z	0.334	false
2021-07-21T21:15Z	0.333	false
2021-07-21T21:00Z	0.333	false
2021-07-21T20:45Z	0.332	false
2021-07-21T20:30Z	0.333	false
2021-07-21T20:15Z	0.334	false
2021-07-21T20:00Z	0.334	false
2021-07-21T19:45Z	0.334	false
2021-07-21T19:30Z	0.333	false
2021-07-21T19:15Z	0.333	false
2021-07-21T19:00Z	0.332	false
2021-07-21T18:45Z	0.333	false
2021-07-21T18:30Z	0.334	false
2021-07-21T18:15Z	0.334	false
2021-07-21T18:00Z	0.334	false
2021-07-21T17:45Z	0.334	false
2021-07-21T17:30Z	0.333	false
2021-07-21T17:15Z	0.333	false
2021-07-21T17:00Z	0.334	false
2021-07-21T16:45Z	0.334	false
2021-07-21T16:30Z	0.335	false
2021-07-21T16:15Z	0.334	false
2021-07-21T16:00Z	0.334	false
2021-07-21T15:45Z	0.335	false
2021-07-21T15:30Z	0.335	false
2021-07-21T15:15Z	0.336	false
2021-07-21T15:00Z	0.336	false
2021-07-21T14:45Z	0.335	false
2021-07-21T14:30Z	0.335	false
2021-07-21T14:15Z	0.336	false
2021-07-21T14:00Z	0.336	false
2021-07-21T13:45Z	0.336	false
2021-07-21T13:30Z	0.336	false
2021-07-21T13:15Z	0.338	false
2021-07-21T13:00Z	0.337	false
2021-07-21T12:45Z	0.337	false
2021-07-21T12:30Z	0.337	false
2021-07-21T12:15Z	0.338	false
2021-07-21T12:00Z	0.339	false
2021-07-21T11:45Z	0.339	false
2021-07-21T11:30Z	0.337	false
2021-07-21T11:15Z	0.338	false
2021-07-21T11:00Z	0.337	false
2021-07-21T10:45Z	0.338	false
2021-07-21T10:30Z	0.337	false
2021-07-21T10:15Z	0.338	false
2021-07-21T10:00Z	0.337	false
2021-07-21T09:45Z	0.338	false
2021-07-21T09:30Z	0.338	false
2021-07-21T09:15Z	0.339	false
2021-07-21T09:00Z	0.338	false
2021-07-21T08:45Z	0.337	false
2021-07-21T08:30Z	0.337	false
2021-07-21T08:15Z	0.339	false
2021-07-21T08:00Z	0.336	false
2021-07-21T07:45Z	0.338	false
2021-07-21T07:30Z	0.337	false
2021-07-21T07:15Z	0.338	false
2021-07-21T07:00Z	0.337	false
2021-07-21T06:45Z	0.337	false
2021-07-21T06:30Z	0.339	false
2021-07-21T06:15Z	0.337	false
2021-07-21T06:00Z	0.337	false
2021-07-21T05:45Z	0.337	false
2021-07-21T05:30Z	0.337	false
2021-07-21T05:15Z	0.336	false
2021-07-21T05:00Z	0.337	false
2021-07-21T04:45Z	0.337	false
2021-07-21T04:30Z	0.337	false
2021-07-21T04:15Z	0.338	false
2021-07-21T04:00Z	0.337	false
2021-07-21T03:45Z	0.337	false
2021-07-21T03:30Z	0.336	false
2021-07-21T03:15Z	0.336	false
2021-07-21T03:00Z	0.336	false
2021-07-21T02:45Z	0.336	false
2021-07-21T02:30Z	0.337	false
2021-07-21T02:15Z	0.337	false
2021-07-21T02:00Z	0.336	false
2021-07-21T01:45Z	0.338	false
2021-07-21T01:30Z	0.337	false
2021-07-21T01:15Z	0.335	false
2021-07-21T01:00Z	0.337	false
2021-07-21T00:45Z	0.336	false
2021-07-21T00:30Z	0.335	false
2021-07-21T00:15Z	0.336	false
2021-07-21T00:00Z	0.336	false
2021-07-20T23:45Z	0.335	false
2021-07-20T23:30Z	0.336	false
2021-07-20T23:15Z	0.335	false
2021-07-20T23:00Z	0.336	false
2021-07-20T22:45Z	0.335	false
2021-07-20T22:30Z	0.337	false
2021-07-20T22:15Z	0.336	false
2021-07-20T22:00Z	0.337	false
2021-07-20T21:45Z	0.336	false
2021-07-20T21:30Z	0.336	false
2021-07-20T21:15Z	0.337	false
2021-07-20T21:00Z	0.336	false
2021-07-20T20:45Z	0.336	false
2021-07-20T20:30Z	0.336	false
2021-07-20T20:15Z	0.336	false
2021-07-20T20:00Z	0.336	false
2021-07-20T19:45Z	0.336	false
2021-07-20T19:30Z	0.335	false
2021-07-20T19:15Z	0.336	false
2021-07-20T19:00Z	0.335	false
2021-07-20T18:45Z	0.336	false
2021-07-20T18:30Z	0.336	false
2021-07-20T18:15Z	0.336	false
2021-07-20T18:00Z	0.336	false
2021-07-20T17:45Z	0.336	false
2021-07-20T17:30Z	0.337	false
2021-07-20T17:15Z	0.336	false
2021-07-20T17:00Z	0.337	false
2021-07-20T16:45Z	0.336	false
2021-07-20T16:30Z	0.336	false
2021-07-20T16:15Z	0.338	false
2021-07-20T16:00Z	0.337	false
2021-07-20T15:45Z	0.336	false
2021-07-20T15:30Z	0.337	false
2021-07-20T15:15Z	0.338	false
2021-07-20T15:00Z	0.337	false
2021-07-20T14:45Z	0.338	false
2021-07-20T14:30Z	0.338	false
2021-07-20T14:15Z	0.337	false
2021-07-20T14:00Z	0.337	false
2021-07-20T13:45Z	0.339	false
2021-07-20T13:30Z	0.339	false
2021-07-20T13:15Z	0.339	false
2021-07-20T13:00Z	0.339	false
2021-07-20T12:45Z	0.341	false
2021-07-20T12:30Z	0.34	false
2021-07-20T12:15Z	0.34	false
2021-07-20T12:00Z	0.34	false
2021-07-20T11:45Z	0.341	false
2021-07-20T11:30Z	0.34	false
2021-07-20T11:15Z	0.342	false

Forecast data

Key information

• Station name: Grants Bridge
• Station ID: 7224
• River name: Addlestone Bourne
• Typical range: 0.33m to 1.55m
• Highest level on record: 2.50m on 16 August 2006
• Site datum: 24.00mAOD (what does this mean?)

How are river levels measured?

The Environment agency uses a network of monitoring stations across the country. Each one has its own datum - a height in metres fixed relative to mean sea level. This height is expressed as metres above ordnance datum (mAOD). The river levels we provide for each monitoring station are all relative to its site datum.

If we didn't do this, we'd show some very high measurements, which could cause confusion. By using a local site datum, the river levels are easier to understand, especially by users familiar with the data from a particular monitoring station.

A river's height above ordnance datum can be seen by adding the site datum to the river level.

How often are river levels measured?

We use measuring stations like this one to collect water level data, usually once or twice a day. We collect data more frequently when there's a greater risk of flooding. That's why the graph might show a short time lag since the last measurement.

How might river levels affect flood risk?

Typical range

This is the usual range of river levels at this station, based on historical data.

Above typical

This means that flooding is possible because river levels at this station are currently higher than usual.
Many factors can influence the possibility of flooding - river levels are only one indicator. Always check if there's a flood warning in place at a particular location.

Below typical

This means that river levels at this station are currently lower than usual.
Drought or water management measures may be in place. Please check for the latest information on water resources and restrictions in your area.

• View nearby measuring stations

• View the flood information service for England
• Check the long term flood risk for an area in England.

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