River level Dollis Brook at Whetstone

Check for flood warnings in this area

Latest recorded level 0.27m at 7:00pm Tuesday 7 July 2020.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 2.00m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2020-07-07T18:00Z	0.265	false
2020-07-07T17:45Z	0.265	false
2020-07-07T17:30Z	0.265	false
2020-07-07T17:15Z	0.265	false
2020-07-07T17:00Z	0.265	false
2020-07-07T16:45Z	0.265	false
2020-07-07T16:30Z	0.265	false
2020-07-07T16:15Z	0.265	false
2020-07-07T16:00Z	0.264	false
2020-07-07T15:45Z	0.264	false
2020-07-07T15:30Z	0.264	false
2020-07-07T15:15Z	0.264	false
2020-07-07T15:00Z	0.264	false
2020-07-07T14:45Z	0.265	false
2020-07-07T14:30Z	0.264	false
2020-07-07T14:15Z	0.265	false
2020-07-07T14:00Z	0.264	false
2020-07-07T13:45Z	0.265	false
2020-07-07T13:30Z	0.265	false
2020-07-07T13:15Z	0.265	false
2020-07-07T13:00Z	0.265	false
2020-07-07T12:45Z	0.265	false
2020-07-07T12:30Z	0.265	false
2020-07-07T12:15Z	0.266	false
2020-07-07T12:00Z	0.265	false
2020-07-07T11:45Z	0.264	false
2020-07-07T11:30Z	0.265	false
2020-07-07T11:15Z	0.265	false
2020-07-07T11:00Z	0.264	false
2020-07-07T10:45Z	0.264	false
2020-07-07T10:30Z	0.264	false
2020-07-07T10:15Z	0.263	false
2020-07-07T10:00Z	0.264	false
2020-07-07T09:45Z	0.263	false
2020-07-07T09:30Z	0.264	false
2020-07-07T09:15Z	0.264	false
2020-07-07T09:00Z	0.264	false
2020-07-07T08:45Z	0.264	false
2020-07-07T08:30Z	0.264	false
2020-07-07T08:15Z	0.263	false
2020-07-07T08:00Z	0.263	false
2020-07-07T07:45Z	0.264	false
2020-07-07T07:30Z	0.263	false
2020-07-07T07:15Z	0.263	false
2020-07-07T07:00Z	0.263	false
2020-07-07T06:45Z	0.263	false
2020-07-07T06:30Z	0.263	false
2020-07-07T06:15Z	0.263	false
2020-07-07T06:00Z	0.263	false
2020-07-07T05:45Z	0.263	false
2020-07-07T05:30Z	0.262	false
2020-07-07T05:15Z	0.262	false
2020-07-07T05:00Z	0.262	false
2020-07-07T04:45Z	0.262	false
2020-07-07T04:30Z	0.262	false
2020-07-07T04:15Z	0.262	false
2020-07-07T04:00Z	0.262	false
2020-07-07T03:45Z	0.262	false
2020-07-07T03:30Z	0.262	false
2020-07-07T03:15Z	0.262	false
2020-07-07T03:00Z	0.262	false
2020-07-07T02:45Z	0.262	false
2020-07-07T02:30Z	0.262	false
2020-07-07T02:15Z	0.262	false
2020-07-07T02:00Z	0.263	false
2020-07-07T01:45Z	0.263	false
2020-07-07T01:30Z	0.263	false
2020-07-07T01:15Z	0.263	false
2020-07-07T01:00Z	0.263	false
2020-07-07T00:45Z	0.263	false
2020-07-07T00:30Z	0.263	false
2020-07-07T00:15Z	0.263	false
2020-07-07T00:00Z	0.263	false
2020-07-06T23:45Z	0.263	false
2020-07-06T23:30Z	0.263	false
2020-07-06T23:15Z	0.263	false
2020-07-06T23:00Z	0.263	false
2020-07-06T22:45Z	0.263	false
2020-07-06T22:30Z	0.263	false
2020-07-06T22:15Z	0.263	false
2020-07-06T22:00Z	0.263	false
2020-07-06T21:45Z	0.263	false
2020-07-06T21:30Z	0.262	false
2020-07-06T21:15Z	0.263	false
2020-07-06T21:00Z	0.263	false
2020-07-06T20:45Z	0.263	false
2020-07-06T20:30Z	0.263	false
2020-07-06T20:15Z	0.263	false
2020-07-06T20:00Z	0.263	false
2020-07-06T19:45Z	0.263	false
2020-07-06T19:30Z	0.263	false
2020-07-06T19:15Z	0.263	false
2020-07-06T19:00Z	0.263	false
2020-07-06T18:45Z	0.263	false
2020-07-06T18:30Z	0.263	false
2020-07-06T18:15Z	0.261	false
2020-07-06T18:00Z	0.259	false
2020-07-06T17:45Z	0.26	false
2020-07-06T17:30Z	0.26	false
2020-07-06T17:15Z	0.259	false
2020-07-06T17:00Z	0.259	false
2020-07-06T16:45Z	0.259	false
2020-07-06T16:30Z	0.258	false
2020-07-06T16:15Z	0.259	false
2020-07-06T16:00Z	0.259	false
2020-07-06T15:45Z	0.258	false
2020-07-06T15:30Z	0.258	false
2020-07-06T15:15Z	0.258	false
2020-07-06T15:00Z	0.258	false
2020-07-06T14:45Z	0.258	false
2020-07-06T14:30Z	0.258	false
2020-07-06T14:15Z	0.258	false
2020-07-06T14:00Z	0.258	false
2020-07-06T13:45Z	0.258	false
2020-07-06T13:30Z	0.259	false
2020-07-06T13:15Z	0.258	false
2020-07-06T13:00Z	0.258	false
2020-07-06T12:45Z	0.258	false
2020-07-06T12:30Z	0.258	false
2020-07-06T12:15Z	0.258	false
2020-07-06T12:00Z	0.258	false
2020-07-06T11:45Z	0.258	false
2020-07-06T11:30Z	0.258	false
2020-07-06T11:15Z	0.258	false
2020-07-06T11:00Z	0.258	false
2020-07-06T10:45Z	0.258	false
2020-07-06T10:30Z	0.258	false
2020-07-06T10:15Z	0.258	false
2020-07-06T10:00Z	0.258	false
2020-07-06T09:45Z	0.258	false
2020-07-06T09:30Z	0.258	false
2020-07-06T09:15Z	0.258	false
2020-07-06T09:00Z	0.258	false
2020-07-06T08:45Z	0.258	false
2020-07-06T08:30Z	0.258	false
2020-07-06T08:15Z	0.258	false
2020-07-06T08:00Z	0.259	false
2020-07-06T07:45Z	0.259	false
2020-07-06T07:30Z	0.259	false
2020-07-06T07:15Z	0.258	false
2020-07-06T07:00Z	0.258	false
2020-07-06T06:45Z	0.258	false
2020-07-06T06:30Z	0.259	false
2020-07-06T06:15Z	0.259	false
2020-07-06T06:00Z	0.259	false
2020-07-06T05:45Z	0.259	false
2020-07-06T05:30Z	0.259	false
2020-07-06T05:15Z	0.259	false
2020-07-06T05:00Z	0.259	false
2020-07-06T04:45Z	0.259	false
2020-07-06T04:30Z	0.259	false
2020-07-06T04:15Z	0.259	false
2020-07-06T04:00Z	0.259	false
2020-07-06T03:45Z	0.259	false
2020-07-06T03:30Z	0.259	false
2020-07-06T03:15Z	0.259	false
2020-07-06T03:00Z	0.259	false
2020-07-06T02:45Z	0.259	false
2020-07-06T02:30Z	0.259	false
2020-07-06T02:15Z	0.259	false
2020-07-06T02:00Z	0.259	false
2020-07-06T01:45Z	0.259	false
2020-07-06T01:30Z	0.259	false
2020-07-06T01:15Z	0.26	false
2020-07-06T01:00Z	0.259	false
2020-07-06T00:45Z	0.259	false
2020-07-06T00:30Z	0.259	false
2020-07-06T00:15Z	0.259	false
2020-07-06T00:00Z	0.259	false
2020-07-05T23:45Z	0.259	false
2020-07-05T23:30Z	0.26	false
2020-07-05T23:15Z	0.259	false
2020-07-05T23:00Z	0.26	false
2020-07-05T22:45Z	0.26	false
2020-07-05T22:30Z	0.26	false
2020-07-05T22:15Z	0.26	false
2020-07-05T22:00Z	0.26	false
2020-07-05T21:45Z	0.26	false
2020-07-05T21:30Z	0.261	false
2020-07-05T21:15Z	0.261	false
2020-07-05T21:00Z	0.261	false
2020-07-05T20:45Z	0.261	false
2020-07-05T20:30Z	0.261	false
2020-07-05T20:15Z	0.261	false
2020-07-05T20:00Z	0.26	false
2020-07-05T19:45Z	0.261	false
2020-07-05T19:30Z	0.261	false
2020-07-05T19:15Z	0.261	false
2020-07-05T19:00Z	0.261	false
2020-07-05T18:45Z	0.261	false
2020-07-05T18:30Z	0.261	false
2020-07-05T18:15Z	0.261	false
2020-07-05T18:00Z	0.261	false
2020-07-05T17:45Z	0.261	false
2020-07-05T17:30Z	0.261	false
2020-07-05T17:15Z	0.261	false
2020-07-05T17:00Z	0.262	false
2020-07-05T16:45Z	0.262	false
2020-07-05T16:30Z	0.261	false
2020-07-05T16:15Z	0.262	false
2020-07-05T16:00Z	0.261	false
2020-07-05T15:45Z	0.262	false
2020-07-05T15:30Z	0.262	false
2020-07-05T15:15Z	0.262	false
2020-07-05T15:00Z	0.263	false
2020-07-05T14:45Z	0.262	false
2020-07-05T14:30Z	0.262	false
2020-07-05T14:15Z	0.263	false
2020-07-05T14:00Z	0.262	false
2020-07-05T13:45Z	0.262	false
2020-07-05T13:30Z	0.262	false
2020-07-05T13:15Z	0.262	false
2020-07-05T13:00Z	0.262	false
2020-07-05T12:45Z	0.262	false
2020-07-05T12:30Z	0.262	false
2020-07-05T12:15Z	0.262	false
2020-07-05T12:00Z	0.263	false
2020-07-05T11:45Z	0.262	false
2020-07-05T11:30Z	0.262	false
2020-07-05T11:15Z	0.262	false
2020-07-05T11:00Z	0.262	false
2020-07-05T10:45Z	0.262	false
2020-07-05T10:30Z	0.263	false
2020-07-05T10:15Z	0.263	false
2020-07-05T10:00Z	0.262	false
2020-07-05T09:45Z	0.262	false
2020-07-05T09:30Z	0.262	false
2020-07-05T09:15Z	0.263	false
2020-07-05T09:00Z	0.263	false
2020-07-05T08:45Z	0.263	false
2020-07-05T08:30Z	0.262	false
2020-07-05T08:15Z	0.263	false
2020-07-05T08:00Z	0.262	false
2020-07-05T07:45Z	0.262	false
2020-07-05T07:30Z	0.263	false
2020-07-05T07:15Z	0.263	false
2020-07-05T07:00Z	0.263	false
2020-07-05T06:45Z	0.263	false
2020-07-05T06:30Z	0.263	false
2020-07-05T06:15Z	0.263	false
2020-07-05T06:00Z	0.263	false
2020-07-05T05:45Z	0.264	false
2020-07-05T05:30Z	0.264	false
2020-07-05T05:15Z	0.264	false
2020-07-05T05:00Z	0.264	false
2020-07-05T04:45Z	0.264	false
2020-07-05T04:30Z	0.264	false
2020-07-05T04:15Z	0.264	false
2020-07-05T04:00Z	0.264	false
2020-07-05T03:45Z	0.264	false
2020-07-05T03:30Z	0.264	false
2020-07-05T03:15Z	0.264	false
2020-07-05T03:00Z	0.264	false
2020-07-05T02:45Z	0.264	false
2020-07-05T02:30Z	0.264	false
2020-07-05T02:15Z	0.264	false
2020-07-05T02:00Z	0.264	false
2020-07-05T01:45Z	0.264	false
2020-07-05T01:30Z	0.264	false
2020-07-05T01:15Z	0.264	false
2020-07-05T01:00Z	0.264	false
2020-07-05T00:45Z	0.264	false
2020-07-05T00:30Z	0.264	false
2020-07-05T00:15Z	0.264	false
2020-07-05T00:00Z	0.263	false
2020-07-04T23:45Z	0.264	false
2020-07-04T23:30Z	0.264	false
2020-07-04T23:15Z	0.264	false
2020-07-04T23:00Z	0.264	false
2020-07-04T22:45Z	0.264	false
2020-07-04T22:30Z	0.264	false
2020-07-04T22:15Z	0.263	false
2020-07-04T22:00Z	0.263	false
2020-07-04T21:45Z	0.264	false
2020-07-04T21:30Z	0.263	false
2020-07-04T21:15Z	0.264	false
2020-07-04T21:00Z	0.264	false
2020-07-04T20:45Z	0.263	false
2020-07-04T20:30Z	0.264	false
2020-07-04T20:15Z	0.263	false
2020-07-04T20:00Z	0.264	false
2020-07-04T19:45Z	0.264	false
2020-07-04T19:30Z	0.264	false
2020-07-04T19:15Z	0.264	false
2020-07-04T19:00Z	0.264	false
2020-07-04T18:45Z	0.264	false
2020-07-04T18:30Z	0.264	false
2020-07-04T18:15Z	0.264	false
2020-07-04T18:00Z	0.263	false
2020-07-04T17:45Z	0.264	false
2020-07-04T17:30Z	0.264	false
2020-07-04T17:15Z	0.264	false
2020-07-04T17:00Z	0.264	false
2020-07-04T16:45Z	0.264	false
2020-07-04T16:30Z	0.264	false
2020-07-04T16:15Z	0.264	false
2020-07-04T16:00Z	0.264	false
2020-07-04T15:45Z	0.264	false
2020-07-04T15:30Z	0.263	false
2020-07-04T15:15Z	0.264	false
2020-07-04T15:00Z	0.264	false
2020-07-04T14:45Z	0.263	false
2020-07-04T14:30Z	0.264	false
2020-07-04T14:15Z	0.264	false
2020-07-04T14:00Z	0.264	false
2020-07-04T13:45Z	0.264	false
2020-07-04T13:30Z	0.264	false
2020-07-04T13:15Z	0.265	false
2020-07-04T13:00Z	0.265	false
2020-07-04T12:45Z	0.265	false
2020-07-04T12:30Z	0.265	false
2020-07-04T12:15Z	0.265	false
2020-07-04T12:00Z	0.266	false
2020-07-04T11:45Z	0.265	false
2020-07-04T11:30Z	0.266	false
2020-07-04T11:15Z	0.266	false
2020-07-04T11:00Z	0.266	false
2020-07-04T10:45Z	0.267	false
2020-07-04T10:30Z	0.267	false
2020-07-04T10:15Z	0.268	false
2020-07-04T10:00Z	0.269	false
2020-07-04T09:45Z	0.27	false
2020-07-04T09:30Z	0.269	false
2020-07-04T09:15Z	0.271	false
2020-07-04T09:00Z	0.271	false
2020-07-04T08:45Z	0.272	false
2020-07-04T08:30Z	0.273	false
2020-07-04T08:15Z	0.275	false
2020-07-04T08:00Z	0.276	false
2020-07-04T07:45Z	0.278	false
2020-07-04T07:30Z	0.279	false
2020-07-04T07:15Z	0.279	false
2020-07-04T07:00Z	0.278	false
2020-07-04T06:45Z	0.276	false
2020-07-04T06:30Z	0.267	false
2020-07-04T06:15Z	0.265	false
2020-07-04T06:00Z	0.265	false
2020-07-04T05:45Z	0.266	false
2020-07-04T05:30Z	0.267	false
2020-07-04T05:15Z	0.268	false
2020-07-04T05:00Z	0.271	false
2020-07-04T04:45Z	0.274	false
2020-07-04T04:30Z	0.278	false
2020-07-04T04:15Z	0.278	false
2020-07-04T04:00Z	0.274	false
2020-07-04T03:45Z	0.274	false
2020-07-04T03:30Z	0.27	false
2020-07-04T03:15Z	0.27	false
2020-07-04T03:00Z	0.269	false
2020-07-04T02:45Z	0.269	false
2020-07-04T02:30Z	0.268	false
2020-07-04T02:15Z	0.267	false
2020-07-04T02:00Z	0.268	false
2020-07-04T01:45Z	0.268	false
2020-07-04T01:30Z	0.268	false
2020-07-04T01:15Z	0.267	false
2020-07-04T01:00Z	0.266	false
2020-07-04T00:45Z	0.266	false
2020-07-04T00:30Z	0.265	false
2020-07-04T00:15Z	0.265	false
2020-07-04T00:00Z	0.265	false
2020-07-03T23:45Z	0.265	false
2020-07-03T23:30Z	0.265	false
2020-07-03T23:15Z	0.265	false
2020-07-03T23:00Z	0.265	false
2020-07-03T22:45Z	0.265	false
2020-07-03T22:30Z	0.265	false
2020-07-03T22:15Z	0.266	false
2020-07-03T22:00Z	0.266	false
2020-07-03T21:45Z	0.266	false
2020-07-03T21:30Z	0.267	false
2020-07-03T21:15Z	0.266	false
2020-07-03T21:00Z	0.265	false
2020-07-03T20:45Z	0.264	false
2020-07-03T20:30Z	0.265	false
2020-07-03T20:15Z	0.264	false
2020-07-03T20:00Z	0.264	false
2020-07-03T19:45Z	0.264	false
2020-07-03T19:30Z	0.263	false
2020-07-03T19:15Z	0.263	false
2020-07-03T19:00Z	0.263	false
2020-07-03T18:45Z	0.263	false
2020-07-03T18:30Z	0.263	false
2020-07-03T18:15Z	0.263	false
2020-07-03T18:00Z	0.262	false
2020-07-03T17:45Z	0.262	false
2020-07-03T17:30Z	0.263	false
2020-07-03T17:15Z	0.263	false
2020-07-03T17:00Z	0.263	false
2020-07-03T16:45Z	0.263	false
2020-07-03T16:30Z	0.262	false
2020-07-03T16:15Z	0.263	false
2020-07-03T16:00Z	0.262	false
2020-07-03T15:45Z	0.263	false
2020-07-03T15:30Z	0.263	false
2020-07-03T15:15Z	0.263	false
2020-07-03T15:00Z	0.263	false
2020-07-03T14:45Z	0.262	false
2020-07-03T14:30Z	0.262	false
2020-07-03T14:15Z	0.262	false
2020-07-03T14:00Z	0.261	false
2020-07-03T13:45Z	0.262	false
2020-07-03T13:30Z	0.262	false
2020-07-03T13:15Z	0.262	false
2020-07-03T13:00Z	0.262	false
2020-07-03T12:45Z	0.262	false
2020-07-03T12:30Z	0.262	false
2020-07-03T12:15Z	0.261	false
2020-07-03T12:00Z	0.262	false
2020-07-03T11:45Z	0.261	false
2020-07-03T11:30Z	0.261	false
2020-07-03T11:15Z	0.261	false
2020-07-03T11:00Z	0.261	false
2020-07-03T10:45Z	0.261	false
2020-07-03T10:30Z	0.26	false
2020-07-03T10:15Z	0.26	false
2020-07-03T10:00Z	0.26	false
2020-07-03T09:45Z	0.26	false
2020-07-03T09:30Z	0.26	false
2020-07-03T09:15Z	0.26	false
2020-07-03T09:00Z	0.26	false
2020-07-03T08:45Z	0.26	false
2020-07-03T08:30Z	0.26	false
2020-07-03T08:15Z	0.26	false
2020-07-03T08:00Z	0.26	false
2020-07-03T07:45Z	0.261	false
2020-07-03T07:30Z	0.261	false
2020-07-03T07:15Z	0.26	false
2020-07-03T07:00Z	0.261	false
2020-07-03T06:45Z	0.261	false
2020-07-03T06:30Z	0.261	false
2020-07-03T06:15Z	0.261	false
2020-07-03T06:00Z	0.261	false
2020-07-03T05:45Z	0.262	false
2020-07-03T05:30Z	0.262	false
2020-07-03T05:15Z	0.262	false
2020-07-03T05:00Z	0.262	false
2020-07-03T04:45Z	0.262	false
2020-07-03T04:30Z	0.262	false
2020-07-03T04:15Z	0.263	false
2020-07-03T04:00Z	0.263	false
2020-07-03T03:45Z	0.264	false
2020-07-03T03:30Z	0.264	false
2020-07-03T03:15Z	0.264	false
2020-07-03T03:00Z	0.264	false
2020-07-03T02:45Z	0.264	false
2020-07-03T02:30Z	0.264	false
2020-07-03T02:15Z	0.264	false
2020-07-03T02:00Z	0.265	false
2020-07-03T01:45Z	0.265	false
2020-07-03T01:30Z	0.265	false
2020-07-03T01:15Z	0.266	false
2020-07-03T01:00Z	0.267	false
2020-07-03T00:45Z	0.267	false
2020-07-03T00:30Z	0.267	false
2020-07-03T00:15Z	0.268	false
2020-07-03T00:00Z	0.268	false
2020-07-02T23:45Z	0.269	false
2020-07-02T23:30Z	0.27	false
2020-07-02T23:15Z	0.272	false
2020-07-02T23:00Z	0.272	false
2020-07-02T22:45Z	0.274	false
2020-07-02T22:30Z	0.275	false
2020-07-02T22:15Z	0.276	false
2020-07-02T22:00Z	0.277	false
2020-07-02T21:45Z	0.278	false
2020-07-02T21:30Z	0.279	false
2020-07-02T21:15Z	0.281	false
2020-07-02T21:00Z	0.284	false
2020-07-02T20:45Z	0.286	false
2020-07-02T20:30Z	0.29	false
2020-07-02T20:15Z	0.293	false
2020-07-02T20:00Z	0.298	false
2020-07-02T19:45Z	0.303	false
2020-07-02T19:30Z	0.308	false
2020-07-02T19:15Z	0.314	false
2020-07-02T19:00Z	0.324	false
2020-07-02T18:45Z	0.33	false
2020-07-02T18:30Z	0.333	false
2020-07-02T18:15Z	0.335	false

Forecast data

Key information

• Station name: Whetstone
• Station ID: 7278
• River name: Dollis Brook
• Typical range: 0.26m to 2.00m
• Highest level on record: 1.07m on 10 February 2009
• Site datum: 62.00mAOD (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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