River level Addlestone Bourne at Grants Bridge

Check for flood warnings in this area

Latest recorded level 0.35m at 4:15am Tuesday 21 January 2020.

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
2020-01-21T04:15Z	0.349	false
2020-01-21T04:00Z	0.349	false
2020-01-21T03:45Z	0.344	false
2020-01-21T03:30Z	0.343	false
2020-01-21T03:15Z	0.341	false
2020-01-21T03:00Z	0.346	false
2020-01-21T02:45Z	0.344	false
2020-01-21T02:30Z	0.346	false
2020-01-21T02:15Z	0.347	false
2020-01-21T02:00Z	0.348	false
2020-01-21T01:45Z	0.346	false
2020-01-21T01:30Z	0.345	false
2020-01-21T01:15Z	0.35	false
2020-01-21T01:00Z	0.35	false
2020-01-21T00:45Z	0.35	false
2020-01-21T00:30Z	0.352	false
2020-01-21T00:15Z	0.356	false
2020-01-21T00:00Z	0.353	false
2020-01-20T23:45Z	0.355	false
2020-01-20T23:30Z	0.357	false
2020-01-20T23:15Z	0.353	false
2020-01-20T23:00Z	0.352	false
2020-01-20T22:45Z	0.353	false
2020-01-20T22:30Z	0.352	false
2020-01-20T22:15Z	0.352	false
2020-01-20T22:00Z	0.357	false
2020-01-20T21:45Z	0.352	false
2020-01-20T21:30Z	0.353	false
2020-01-20T21:15Z	0.35	false
2020-01-20T21:00Z	0.356	false
2020-01-20T20:45Z	0.356	false
2020-01-20T20:30Z	0.352	false
2020-01-20T20:15Z	0.356	false
2020-01-20T20:00Z	0.35	false
2020-01-20T19:45Z	0.351	false
2020-01-20T19:30Z	0.355	false
2020-01-20T19:15Z	0.358	false
2020-01-20T19:00Z	0.358	false
2020-01-20T18:45Z	0.353	false
2020-01-20T18:30Z	0.351	false
2020-01-20T18:15Z	0.35	false
2020-01-20T18:00Z	0.354	false
2020-01-20T17:45Z	0.354	false
2020-01-20T17:30Z	0.356	false
2020-01-20T17:15Z	0.358	false
2020-01-20T17:00Z	0.356	false
2020-01-20T16:45Z	0.355	false
2020-01-20T16:30Z	0.356	false
2020-01-20T16:15Z	0.357	false
2020-01-20T16:00Z	0.357	false
2020-01-20T15:45Z	0.357	false
2020-01-20T15:30Z	0.349	false
2020-01-20T15:15Z	0.345	false
2020-01-20T15:00Z	0.351	false
2020-01-20T14:45Z	0.35	false
2020-01-20T14:30Z	0.351	false
2020-01-20T14:15Z	0.349	false
2020-01-20T14:00Z	0.353	false
2020-01-20T13:45Z	0.357	false
2020-01-20T13:30Z	0.349	false
2020-01-20T13:15Z	0.351	false
2020-01-20T13:00Z	0.354	false
2020-01-20T12:45Z	0.36	false
2020-01-20T12:30Z	0.365	false
2020-01-20T12:15Z	0.361	false
2020-01-20T12:00Z	0.354	false
2020-01-20T11:45Z	0.364	false
2020-01-20T11:30Z	0.355	false
2020-01-20T11:15Z	0.356	false
2020-01-20T11:00Z	0.362	false
2020-01-20T10:45Z	0.36	false
2020-01-20T10:30Z	0.362	false
2020-01-20T10:15Z	0.36	false
2020-01-20T10:00Z	0.357	false
2020-01-20T09:45Z	0.359	false
2020-01-20T09:30Z	0.365	false
2020-01-20T09:15Z	0.36	false
2020-01-20T09:00Z	0.36	false
2020-01-20T08:45Z	0.363	false
2020-01-20T08:30Z	0.358	false
2020-01-20T08:15Z	0.364	false
2020-01-20T08:00Z	0.36	false
2020-01-20T07:45Z	0.361	false
2020-01-20T07:30Z	0.363	false
2020-01-20T07:15Z	0.359	false
2020-01-20T07:00Z	0.364	false
2020-01-20T06:45Z	0.363	false
2020-01-20T06:30Z	0.362	false
2020-01-20T06:15Z	0.366	false
2020-01-20T06:00Z	0.357	false
2020-01-20T05:45Z	0.364	false
2020-01-20T05:30Z	0.369	false
2020-01-20T05:15Z	0.364	false
2020-01-20T05:00Z	0.365	false
2020-01-20T04:45Z	0.36	false
2020-01-20T04:30Z	0.359	false
2020-01-20T04:15Z	0.36	false
2020-01-20T04:00Z	0.364	false
2020-01-20T03:45Z	0.363	false
2020-01-20T03:30Z	0.362	false
2020-01-20T03:15Z	0.362	false
2020-01-20T03:00Z	0.361	false
2020-01-20T02:45Z	0.36	false
2020-01-20T02:30Z	0.365	false
2020-01-20T02:15Z	0.361	false
2020-01-20T02:00Z	0.357	false
2020-01-20T01:45Z	0.366	false
2020-01-20T01:30Z	0.365	false
2020-01-20T01:15Z	0.373	false
2020-01-20T01:00Z	0.371	false
2020-01-20T00:45Z	0.367	false
2020-01-20T00:30Z	0.372	false
2020-01-20T00:15Z	0.371	false
2020-01-20T00:00Z	0.371	false
2020-01-19T23:45Z	0.376	false
2020-01-19T23:30Z	0.374	false
2020-01-19T23:15Z	0.373	false
2020-01-19T23:00Z	0.378	false
2020-01-19T22:45Z	0.371	false
2020-01-19T22:30Z	0.376	false
2020-01-19T22:15Z	0.378	false
2020-01-19T22:00Z	0.37	false
2020-01-19T21:45Z	0.372	false
2020-01-19T21:30Z	0.378	false
2020-01-19T21:15Z	0.379	false
2020-01-19T21:00Z	0.382	false
2020-01-19T20:45Z	0.376	false
2020-01-19T20:30Z	0.38	false
2020-01-19T20:15Z	0.378	false
2020-01-19T20:00Z	0.374	false
2020-01-19T19:45Z	0.38	false
2020-01-19T19:30Z	0.38	false
2020-01-19T19:15Z	0.383	false
2020-01-19T19:00Z	0.379	false
2020-01-19T18:45Z	0.382	false
2020-01-19T18:30Z	0.38	false
2020-01-19T18:15Z	0.379	false
2020-01-19T18:00Z	0.38	false
2020-01-19T17:45Z	0.385	false
2020-01-19T17:30Z	0.377	false
2020-01-19T17:15Z	0.379	false
2020-01-19T17:00Z	0.381	false
2020-01-19T16:45Z	0.373	false
2020-01-19T16:30Z	0.377	false
2020-01-19T16:15Z	0.377	false
2020-01-19T16:00Z	0.378	false
2020-01-19T15:45Z	0.379	false
2020-01-19T15:30Z	0.378	false
2020-01-19T15:15Z	0.379	false
2020-01-19T15:00Z	0.384	false
2020-01-19T14:45Z	0.375	false
2020-01-19T14:30Z	0.374	false
2020-01-19T14:15Z	0.369	false
2020-01-19T14:00Z	0.38	false
2020-01-19T13:45Z	0.378	false
2020-01-19T13:30Z	0.377	false
2020-01-19T13:15Z	0.381	false
2020-01-19T13:00Z	0.382	false
2020-01-19T12:45Z	0.382	false
2020-01-19T12:30Z	0.382	false
2020-01-19T12:15Z	0.381	false
2020-01-19T12:00Z	0.386	false
2020-01-19T11:45Z	0.392	false
2020-01-19T11:30Z	0.388	false
2020-01-19T11:15Z	0.394	false
2020-01-19T11:00Z	0.386	false
2020-01-19T10:45Z	0.387	false
2020-01-19T10:30Z	0.389	false
2020-01-19T10:15Z	0.39	false
2020-01-19T10:00Z	0.399	false
2020-01-19T09:45Z	0.392	false
2020-01-19T09:30Z	0.396	false
2020-01-19T09:15Z	0.395	false
2020-01-19T09:00Z	0.396	false
2020-01-19T08:45Z	0.393	false
2020-01-19T08:30Z	0.394	false
2020-01-19T08:15Z	0.393	false
2020-01-19T08:00Z	0.392	false
2020-01-19T07:45Z	0.391	false
2020-01-19T07:30Z	0.392	false
2020-01-19T07:15Z	0.392	false
2020-01-19T07:00Z	0.386	false
2020-01-19T06:45Z	0.393	false
2020-01-19T06:30Z	0.391	false
2020-01-19T06:15Z	0.387	false
2020-01-19T06:00Z	0.391	false
2020-01-19T05:45Z	0.388	false
2020-01-19T05:30Z	0.385	false
2020-01-19T05:15Z	0.393	false
2020-01-19T05:00Z	0.383	false
2020-01-19T04:45Z	0.387	false
2020-01-19T04:30Z	0.385	false
2020-01-19T04:15Z	0.39	false
2020-01-19T04:00Z	0.39	false
2020-01-19T03:45Z	0.389	false
2020-01-19T03:30Z	0.388	false
2020-01-19T03:15Z	0.392	false
2020-01-19T03:00Z	0.39	false
2020-01-19T02:45Z	0.392	false
2020-01-19T02:30Z	0.395	false
2020-01-19T02:15Z	0.395	false
2020-01-19T02:00Z	0.397	false
2020-01-19T01:45Z	0.397	false
2020-01-19T01:30Z	0.389	false
2020-01-19T01:15Z	0.391	false
2020-01-19T01:00Z	0.394	false
2020-01-19T00:45Z	0.39	false
2020-01-19T00:30Z	0.394	false
2020-01-19T00:15Z	0.389	false
2020-01-19T00:00Z	0.39	false
2020-01-18T23:45Z	0.39	false
2020-01-18T23:30Z	0.393	false
2020-01-18T23:15Z	0.386	false
2020-01-18T23:00Z	0.391	false
2020-01-18T22:45Z	0.386	false
2020-01-18T22:30Z	0.39	false
2020-01-18T22:15Z	0.389	false
2020-01-18T22:00Z	0.392	false
2020-01-18T21:45Z	0.391	false
2020-01-18T21:30Z	0.39	false
2020-01-18T21:15Z	0.389	false
2020-01-18T21:00Z	0.39	false
2020-01-18T20:45Z	0.393	false
2020-01-18T20:30Z	0.39	false
2020-01-18T20:15Z	0.393	false
2020-01-18T20:00Z	0.393	false
2020-01-18T19:45Z	0.39	false
2020-01-18T19:30Z	0.395	false
2020-01-18T19:15Z	0.391	false
2020-01-18T19:00Z	0.395	false
2020-01-18T18:45Z	0.392	false
2020-01-18T18:30Z	0.391	false
2020-01-18T18:15Z	0.391	false
2020-01-18T18:00Z	0.391	false
2020-01-18T17:45Z	0.394	false
2020-01-18T17:30Z	0.393	false
2020-01-18T17:15Z	0.388	false
2020-01-18T17:00Z	0.388	false
2020-01-18T16:45Z	0.388	false
2020-01-18T16:30Z	0.391	false
2020-01-18T16:15Z	0.391	false
2020-01-18T16:00Z	0.392	false
2020-01-18T15:45Z	0.392	false
2020-01-18T15:30Z	0.391	false
2020-01-18T15:15Z	0.387	false
2020-01-18T15:00Z	0.392	false
2020-01-18T14:45Z	0.389	false
2020-01-18T14:30Z	0.387	false
2020-01-18T14:15Z	0.388	false
2020-01-18T14:00Z	0.385	false
2020-01-18T13:45Z	0.393	false
2020-01-18T13:30Z	0.386	false
2020-01-18T13:15Z	0.388	false
2020-01-18T13:00Z	0.39	false
2020-01-18T12:45Z	0.393	false
2020-01-18T12:30Z	0.394	false
2020-01-18T12:15Z	0.393	false
2020-01-18T12:00Z	0.397	false
2020-01-18T11:45Z	0.397	false
2020-01-18T11:30Z	0.396	false
2020-01-18T11:15Z	0.404	false
2020-01-18T11:00Z	0.4	false
2020-01-18T10:45Z	0.404	false
2020-01-18T10:30Z	0.406	false
2020-01-18T10:15Z	0.404	false
2020-01-18T10:00Z	0.405	false
2020-01-18T09:45Z	0.401	false
2020-01-18T09:30Z	0.403	false
2020-01-18T09:15Z	0.406	false
2020-01-18T09:00Z	0.405	false
2020-01-18T08:45Z	0.412	false
2020-01-18T08:30Z	0.411	false
2020-01-18T08:15Z	0.411	false
2020-01-18T08:00Z	0.408	false
2020-01-18T07:45Z	0.407	false
2020-01-18T07:30Z	0.412	false
2020-01-18T07:15Z	0.415	false
2020-01-18T07:00Z	0.414	false
2020-01-18T06:45Z	0.416	false
2020-01-18T06:30Z	0.417	false
2020-01-18T06:15Z	0.415	false
2020-01-18T06:00Z	0.414	false
2020-01-18T05:45Z	0.422	false
2020-01-18T05:30Z	0.415	false
2020-01-18T05:15Z	0.422	false
2020-01-18T05:00Z	0.42	false
2020-01-18T04:45Z	0.415	false
2020-01-18T04:30Z	0.414	false
2020-01-18T04:15Z	0.416	false
2020-01-18T04:00Z	0.418	false
2020-01-18T03:45Z	0.419	false
2020-01-18T03:30Z	0.424	false
2020-01-18T03:15Z	0.423	false
2020-01-18T03:00Z	0.424	false
2020-01-18T02:45Z	0.422	false
2020-01-18T02:30Z	0.424	false
2020-01-18T02:15Z	0.422	false
2020-01-18T02:00Z	0.428	false
2020-01-18T01:45Z	0.431	false
2020-01-18T01:30Z	0.429	false
2020-01-18T01:15Z	0.431	false
2020-01-18T01:00Z	0.434	false
2020-01-18T00:45Z	0.424	false
2020-01-18T00:30Z	0.431	false
2020-01-18T00:15Z	0.437	false
2020-01-18T00:00Z	0.437	false
2020-01-17T23:45Z	0.434	false
2020-01-17T23:30Z	0.433	false
2020-01-17T23:15Z	0.428	false
2020-01-17T23:00Z	0.43	false
2020-01-17T22:45Z	0.436	false
2020-01-17T22:30Z	0.433	false
2020-01-17T22:15Z	0.426	false
2020-01-17T22:00Z	0.436	false
2020-01-17T21:45Z	0.433	false
2020-01-17T21:30Z	0.433	false
2020-01-17T21:15Z	0.434	false
2020-01-17T21:00Z	0.438	false
2020-01-17T20:45Z	0.434	false
2020-01-17T20:30Z	0.434	false
2020-01-17T20:15Z	0.437	false
2020-01-17T20:00Z	0.439	false
2020-01-17T19:45Z	0.445	false
2020-01-17T19:30Z	0.445	false
2020-01-17T19:15Z	0.442	false
2020-01-17T19:00Z	0.443	false
2020-01-17T18:45Z	0.446	false
2020-01-17T18:30Z	0.444	false
2020-01-17T18:15Z	0.448	false
2020-01-17T18:00Z	0.456	false
2020-01-17T17:45Z	0.457	false
2020-01-17T17:30Z	0.455	false
2020-01-17T17:15Z	0.455	false
2020-01-17T17:00Z	0.452	false
2020-01-17T16:45Z	0.452	false
2020-01-17T16:30Z	0.453	false
2020-01-17T16:15Z	0.452	false
2020-01-17T16:00Z	0.447	false
2020-01-17T15:45Z	0.449	false
2020-01-17T15:30Z	0.453	false
2020-01-17T15:15Z	0.454	false
2020-01-17T15:00Z	0.453	false
2020-01-17T14:45Z	0.449	false
2020-01-17T14:30Z	0.447	false
2020-01-17T14:15Z	0.45	false
2020-01-17T14:00Z	0.45	false
2020-01-17T13:45Z	0.453	false
2020-01-17T13:30Z	0.449	false
2020-01-17T13:15Z	0.453	false
2020-01-17T13:00Z	0.458	false
2020-01-17T12:45Z	0.456	false
2020-01-17T12:30Z	0.458	false
2020-01-17T12:15Z	0.456	false
2020-01-17T12:00Z	0.452	false
2020-01-17T11:45Z	0.458	false
2020-01-17T11:30Z	0.449	false
2020-01-17T11:15Z	0.443	false
2020-01-17T11:00Z	0.449	false
2020-01-17T10:45Z	0.446	false
2020-01-17T10:30Z	0.441	false
2020-01-17T10:15Z	0.441	false
2020-01-17T10:00Z	0.438	false
2020-01-17T09:45Z	0.434	false
2020-01-17T09:30Z	0.431	false
2020-01-17T09:15Z	0.439	false
2020-01-17T09:00Z	0.433	false
2020-01-17T08:45Z	0.433	false
2020-01-17T08:30Z	0.439	false
2020-01-17T08:15Z	0.435	false
2020-01-17T08:00Z	0.428	false
2020-01-17T07:45Z	0.434	false
2020-01-17T07:30Z	0.431	false
2020-01-17T07:15Z	0.426	false
2020-01-17T07:00Z	0.423	false
2020-01-17T06:45Z	0.428	false
2020-01-17T06:30Z	0.425	false
2020-01-17T06:15Z	0.426	false
2020-01-17T06:00Z	0.425	false
2020-01-17T05:45Z	0.429	false
2020-01-17T05:30Z	0.422	false
2020-01-17T05:15Z	0.426	false
2020-01-17T05:00Z	0.414	false
2020-01-17T04:45Z	0.42	false
2020-01-17T04:30Z	0.423	false
2020-01-17T04:15Z	0.422	false
2020-01-17T04:00Z	0.42	false
2020-01-17T03:45Z	0.43	false
2020-01-17T03:30Z	0.429	false
2020-01-17T03:15Z	0.426	false
2020-01-17T03:00Z	0.424	false
2020-01-17T02:45Z	0.429	false
2020-01-17T02:30Z	0.43	false
2020-01-17T02:15Z	0.432	false
2020-01-17T02:00Z	0.43	false
2020-01-17T01:45Z	0.432	false
2020-01-17T01:30Z	0.423	false
2020-01-17T01:15Z	0.427	false
2020-01-17T01:00Z	0.424	false
2020-01-17T00:45Z	0.424	false
2020-01-17T00:30Z	0.424	false
2020-01-17T00:15Z	0.429	false
2020-01-17T00:00Z	0.427	false
2020-01-16T23:45Z	0.422	false
2020-01-16T23:30Z	0.426	false
2020-01-16T23:15Z	0.426	false
2020-01-16T23:00Z	0.423	false
2020-01-16T22:45Z	0.422	false
2020-01-16T22:30Z	0.428	false
2020-01-16T22:15Z	0.421	false
2020-01-16T22:00Z	0.423	false
2020-01-16T21:45Z	0.429	false
2020-01-16T21:30Z	0.425	false
2020-01-16T21:15Z	0.425	false
2020-01-16T21:00Z	0.416	false
2020-01-16T20:45Z	0.413	false
2020-01-16T20:30Z	0.415	false
2020-01-16T20:15Z	0.406	false
2020-01-16T20:00Z	0.41	false
2020-01-16T19:45Z	0.405	false
2020-01-16T19:30Z	0.409	false
2020-01-16T19:15Z	0.399	false
2020-01-16T19:00Z	0.403	false
2020-01-16T18:45Z	0.405	false
2020-01-16T18:30Z	0.396	false
2020-01-16T18:15Z	0.405	false
2020-01-16T18:00Z	0.403	false
2020-01-16T17:45Z	0.396	false
2020-01-16T17:30Z	0.394	false
2020-01-16T17:15Z	0.398	false
2020-01-16T17:00Z	0.39	false
2020-01-16T16:45Z	0.394	false
2020-01-16T16:30Z	0.397	false
2020-01-16T16:15Z	0.403	false
2020-01-16T16:00Z	0.39	false
2020-01-16T15:45Z	0.399	false
2020-01-16T15:30Z	0.405	false
2020-01-16T15:15Z	0.397	false
2020-01-16T15:00Z	0.402	false
2020-01-16T14:45Z	0.401	false
2020-01-16T14:30Z	0.397	false
2020-01-16T14:15Z	0.395	false
2020-01-16T14:00Z	0.394	false
2020-01-16T13:45Z	0.394	false
2020-01-16T13:30Z	0.395	false
2020-01-16T13:15Z	0.393	false
2020-01-16T13:00Z	0.395	false
2020-01-16T12:45Z	0.402	false
2020-01-16T12:30Z	0.395	false
2020-01-16T12:15Z	0.403	false
2020-01-16T12:00Z	0.403	false
2020-01-16T11:45Z	0.403	false
2020-01-16T11:30Z	0.407	false
2020-01-16T11:15Z	0.405	false
2020-01-16T11:00Z	0.416	false
2020-01-16T10:45Z	0.413	false
2020-01-16T10:30Z	0.414	false
2020-01-16T10:15Z	0.421	false
2020-01-16T10:00Z	0.419	false
2020-01-16T09:45Z	0.421	false
2020-01-16T09:30Z	0.423	false
2020-01-16T09:15Z	0.425	false
2020-01-16T09:00Z	0.422	false
2020-01-16T08:45Z	0.423	false
2020-01-16T08:30Z	0.419	false
2020-01-16T08:15Z	0.411	false
2020-01-16T08:00Z	0.414	false
2020-01-16T07:45Z	0.42	false
2020-01-16T07:30Z	0.422	false
2020-01-16T07:15Z	0.42	false
2020-01-16T07:00Z	0.422	false
2020-01-16T06:45Z	0.419	false
2020-01-16T06:30Z	0.421	false
2020-01-16T06:15Z	0.418	false
2020-01-16T06:00Z	0.426	false
2020-01-16T05:45Z	0.428	false
2020-01-16T05:30Z	0.433	false
2020-01-16T05:15Z	0.441	false
2020-01-16T05:00Z	0.433	false
2020-01-16T04:45Z	0.445	false
2020-01-16T04:30Z	0.437	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
• View your property's long term risk of flooding

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