River level River Allen at Idless Dam

Check for flood warnings in this area

Latest recorded level 0.14m at 6:30pm Friday 14 May 2021.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.10m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2021-05-14T17:30Z	0.141	false
2021-05-14T17:15Z	0.14	false
2021-05-14T17:00Z	0.14	false
2021-05-14T16:45Z	0.14	false
2021-05-14T16:30Z	0.14	false
2021-05-14T16:15Z	0.14	false
2021-05-14T16:00Z	0.14	false
2021-05-14T15:45Z	0.141	false
2021-05-14T15:30Z	0.141	false
2021-05-14T15:15Z	0.141	false
2021-05-14T15:00Z	0.141	false
2021-05-14T14:45Z	0.141	false
2021-05-14T14:30Z	0.141	false
2021-05-14T14:15Z	0.141	false
2021-05-14T14:00Z	0.141	false
2021-05-14T13:45Z	0.14	false
2021-05-14T13:30Z	0.14	false
2021-05-14T13:15Z	0.141	false
2021-05-14T13:00Z	0.142	false
2021-05-14T12:45Z	0.141	false
2021-05-14T12:30Z	0.141	false
2021-05-14T12:15Z	0.141	false
2021-05-14T12:00Z	0.141	false
2021-05-14T11:45Z	0.141	false
2021-05-14T11:30Z	0.142	false
2021-05-14T11:15Z	0.141	false
2021-05-14T11:00Z	0.139	false
2021-05-14T10:45Z	0.14	false
2021-05-14T10:30Z	0.14	false
2021-05-14T10:15Z	0.14	false
2021-05-14T10:00Z	0.14	false
2021-05-14T09:45Z	0.141	false
2021-05-14T09:30Z	0.14	false
2021-05-14T09:15Z	0.141	false
2021-05-14T09:00Z	0.143	false
2021-05-14T08:45Z	0.141	false
2021-05-14T08:30Z	0.141	false
2021-05-14T08:15Z	0.141	false
2021-05-14T08:00Z	0.141	false
2021-05-14T07:45Z	0.142	false
2021-05-14T07:30Z	0.142	false
2021-05-14T07:15Z	0.141	false
2021-05-14T07:00Z	0.141	false
2021-05-14T06:45Z	0.141	false
2021-05-14T06:30Z	0.142	false
2021-05-14T06:15Z	0.141	false
2021-05-14T06:00Z	0.141	false
2021-05-14T05:45Z	0.141	false
2021-05-14T05:30Z	0.142	false
2021-05-14T05:15Z	0.142	false
2021-05-14T05:00Z	0.142	false
2021-05-14T04:45Z	0.142	false
2021-05-14T04:30Z	0.142	false
2021-05-14T04:15Z	0.142	false
2021-05-14T04:00Z	0.142	false
2021-05-14T03:45Z	0.142	false
2021-05-14T03:30Z	0.142	false
2021-05-14T03:15Z	0.142	false
2021-05-14T03:00Z	0.142	false
2021-05-14T02:45Z	0.142	false
2021-05-14T02:30Z	0.142	false
2021-05-14T02:15Z	0.142	false
2021-05-14T02:00Z	0.142	false
2021-05-14T01:45Z	0.142	false
2021-05-14T01:30Z	0.142	false
2021-05-14T01:15Z	0.142	false
2021-05-14T01:00Z	0.142	false
2021-05-14T00:45Z	0.142	false
2021-05-14T00:30Z	0.142	false
2021-05-14T00:15Z	0.142	false
2021-05-14T00:00Z	0.142	false
2021-05-13T23:45Z	0.142	false
2021-05-13T23:30Z	0.142	false
2021-05-13T23:15Z	0.142	false
2021-05-13T23:00Z	0.142	false
2021-05-13T22:45Z	0.142	false
2021-05-13T22:30Z	0.142	false
2021-05-13T22:15Z	0.142	false
2021-05-13T22:00Z	0.142	false
2021-05-13T21:45Z	0.142	false
2021-05-13T21:30Z	0.142	false
2021-05-13T21:15Z	0.142	false
2021-05-13T21:00Z	0.142	false
2021-05-13T20:45Z	0.141	false
2021-05-13T20:30Z	0.141	false
2021-05-13T20:15Z	0.141	false
2021-05-13T20:00Z	0.142	false
2021-05-13T19:45Z	0.142	false
2021-05-13T19:30Z	0.142	false
2021-05-13T19:15Z	0.142	false
2021-05-13T19:00Z	0.142	false
2021-05-13T18:45Z	0.141	false
2021-05-13T18:30Z	0.142	false
2021-05-13T18:15Z	0.141	false
2021-05-13T18:00Z	0.142	false
2021-05-13T17:45Z	0.142	false
2021-05-13T17:30Z	0.142	false
2021-05-13T17:15Z	0.143	false
2021-05-13T17:00Z	0.141	false
2021-05-13T16:45Z	0.142	false
2021-05-13T16:30Z	0.141	false
2021-05-13T16:15Z	0.142	false
2021-05-13T16:00Z	0.142	false
2021-05-13T15:45Z	0.141	false
2021-05-13T15:30Z	0.141	false
2021-05-13T15:15Z	0.142	false
2021-05-13T15:00Z	0.142	false
2021-05-13T14:45Z	0.142	false
2021-05-13T14:30Z	0.141	false
2021-05-13T14:15Z	0.141	false
2021-05-13T14:00Z	0.142	false
2021-05-13T13:45Z	0.141	false
2021-05-13T13:30Z	0.141	false
2021-05-13T13:15Z	0.142	false
2021-05-13T13:00Z	0.142	false
2021-05-13T12:45Z	0.142	false
2021-05-13T12:30Z	0.142	false
2021-05-13T12:15Z	0.141	false
2021-05-13T12:00Z	0.141	false
2021-05-13T11:45Z	0.141	false
2021-05-13T11:30Z	0.141	false
2021-05-13T11:15Z	0.141	false
2021-05-13T11:00Z	0.141	false
2021-05-13T10:45Z	0.142	false
2021-05-13T10:30Z	0.141	false
2021-05-13T10:15Z	0.141	false
2021-05-13T10:00Z	0.141	false
2021-05-13T09:45Z	0.142	false
2021-05-13T09:30Z	0.142	false
2021-05-13T09:15Z	0.141	false
2021-05-13T09:00Z	0.141	false
2021-05-13T08:45Z	0.141	false
2021-05-13T08:30Z	0.142	false
2021-05-13T08:15Z	0.143	false
2021-05-13T08:00Z	0.143	false
2021-05-13T07:45Z	0.143	false
2021-05-13T07:30Z	0.142	false
2021-05-13T07:15Z	0.141	false
2021-05-13T07:00Z	0.141	false
2021-05-13T06:45Z	0.142	false
2021-05-13T06:30Z	0.142	false
2021-05-13T06:15Z	0.142	false
2021-05-13T06:00Z	0.141	false
2021-05-13T05:45Z	0.142	false
2021-05-13T05:30Z	0.142	false
2021-05-13T05:15Z	0.142	false
2021-05-13T05:00Z	0.142	false
2021-05-13T04:45Z	0.142	false
2021-05-13T04:30Z	0.142	false
2021-05-13T04:15Z	0.142	false
2021-05-13T04:00Z	0.142	false
2021-05-13T03:45Z	0.142	false
2021-05-13T03:30Z	0.142	false
2021-05-13T03:15Z	0.142	false
2021-05-13T03:00Z	0.142	false
2021-05-13T02:45Z	0.142	false
2021-05-13T02:30Z	0.142	false
2021-05-13T02:15Z	0.142	false
2021-05-13T02:00Z	0.142	false
2021-05-13T01:45Z	0.142	false
2021-05-13T01:30Z	0.142	false
2021-05-13T01:15Z	0.142	false
2021-05-13T01:00Z	0.142	false
2021-05-13T00:45Z	0.142	false
2021-05-13T00:30Z	0.142	false
2021-05-13T00:15Z	0.142	false
2021-05-13T00:00Z	0.142	false
2021-05-12T23:45Z	0.142	false
2021-05-12T23:30Z	0.142	false
2021-05-12T23:15Z	0.142	false
2021-05-12T23:00Z	0.142	false
2021-05-12T22:45Z	0.142	false
2021-05-12T22:30Z	0.142	false
2021-05-12T22:15Z	0.142	false
2021-05-12T22:00Z	0.142	false
2021-05-12T21:45Z	0.142	false
2021-05-12T21:30Z	0.142	false
2021-05-12T21:15Z	0.142	false
2021-05-12T21:00Z	0.142	false
2021-05-12T20:45Z	0.142	false
2021-05-12T20:30Z	0.142	false
2021-05-12T20:15Z	0.142	false
2021-05-12T20:00Z	0.142	false
2021-05-12T19:45Z	0.142	false
2021-05-12T19:30Z	0.142	false
2021-05-12T19:15Z	0.142	false
2021-05-12T19:00Z	0.142	false
2021-05-12T18:45Z	0.142	false
2021-05-12T18:30Z	0.142	false
2021-05-12T18:15Z	0.141	false
2021-05-12T18:00Z	0.142	false
2021-05-12T17:45Z	0.142	false
2021-05-12T17:30Z	0.142	false
2021-05-12T17:15Z	0.142	false
2021-05-12T17:00Z	0.142	false
2021-05-12T16:45Z	0.142	false
2021-05-12T16:30Z	0.142	false
2021-05-12T16:15Z	0.142	false
2021-05-12T16:00Z	0.142	false
2021-05-12T15:45Z	0.142	false
2021-05-12T15:30Z	0.142	false
2021-05-12T15:15Z	0.142	false
2021-05-12T15:00Z	0.142	false
2021-05-12T14:45Z	0.142	false
2021-05-12T14:30Z	0.142	false
2021-05-12T14:15Z	0.143	false
2021-05-12T14:00Z	0.142	false
2021-05-12T13:45Z	0.142	false
2021-05-12T13:30Z	0.142	false
2021-05-12T13:15Z	0.142	false
2021-05-12T13:00Z	0.142	false
2021-05-12T12:45Z	0.142	false
2021-05-12T12:30Z	0.142	false
2021-05-12T12:15Z	0.142	false
2021-05-12T12:00Z	0.142	false
2021-05-12T11:45Z	0.142	false
2021-05-12T11:30Z	0.142	false
2021-05-12T11:15Z	0.143	false
2021-05-12T11:00Z	0.142	false
2021-05-12T10:45Z	0.142	false
2021-05-12T10:30Z	0.142	false
2021-05-12T10:15Z	0.142	false
2021-05-12T10:00Z	0.142	false
2021-05-12T09:45Z	0.142	false
2021-05-12T09:30Z	0.142	false
2021-05-12T09:15Z	0.142	false
2021-05-12T09:00Z	0.142	false
2021-05-12T08:45Z	0.142	false
2021-05-12T08:30Z	0.142	false
2021-05-12T08:15Z	0.142	false
2021-05-12T08:00Z	0.143	false
2021-05-12T07:45Z	0.142	false
2021-05-12T07:30Z	0.141	false
2021-05-12T07:15Z	0.142	false
2021-05-12T07:00Z	0.141	false
2021-05-12T06:45Z	0.142	false
2021-05-12T06:30Z	0.142	false
2021-05-12T06:15Z	0.142	false
2021-05-12T06:00Z	0.141	false
2021-05-12T05:45Z	0.141	false
2021-05-12T05:30Z	0.142	false
2021-05-12T05:15Z	0.142	false
2021-05-12T05:00Z	0.142	false
2021-05-12T04:45Z	0.142	false
2021-05-12T04:30Z	0.142	false
2021-05-12T04:15Z	0.142	false
2021-05-12T04:00Z	0.142	false
2021-05-12T03:45Z	0.142	false
2021-05-12T03:30Z	0.142	false
2021-05-12T03:15Z	0.142	false
2021-05-12T03:00Z	0.142	false
2021-05-12T02:45Z	0.142	false
2021-05-12T02:30Z	0.142	false
2021-05-12T02:15Z	0.142	false
2021-05-12T02:00Z	0.142	false
2021-05-12T01:45Z	0.142	false
2021-05-12T01:30Z	0.142	false
2021-05-12T01:15Z	0.142	false
2021-05-12T01:00Z	0.142	false
2021-05-12T00:45Z	0.142	false
2021-05-12T00:30Z	0.142	false
2021-05-12T00:15Z	0.142	false
2021-05-12T00:00Z	0.142	false
2021-05-11T23:45Z	0.142	false
2021-05-11T23:30Z	0.142	false
2021-05-11T23:15Z	0.142	false
2021-05-11T23:00Z	0.142	false
2021-05-11T22:45Z	0.142	false
2021-05-11T22:30Z	0.142	false
2021-05-11T22:15Z	0.142	false
2021-05-11T22:00Z	0.142	false
2021-05-11T21:45Z	0.142	false
2021-05-11T21:30Z	0.142	false
2021-05-11T21:15Z	0.142	false
2021-05-11T21:00Z	0.142	false
2021-05-11T20:45Z	0.142	false
2021-05-11T20:30Z	0.142	false
2021-05-11T20:15Z	0.142	false
2021-05-11T20:00Z	0.142	false
2021-05-11T19:45Z	0.142	false
2021-05-11T19:30Z	0.142	false
2021-05-11T19:15Z	0.142	false
2021-05-11T19:00Z	0.142	false
2021-05-11T18:45Z	0.142	false
2021-05-11T18:30Z	0.142	false
2021-05-11T18:15Z	0.142	false
2021-05-11T18:00Z	0.142	false
2021-05-11T17:45Z	0.142	false
2021-05-11T17:30Z	0.142	false
2021-05-11T17:15Z	0.142	false
2021-05-11T17:00Z	0.143	false
2021-05-11T16:45Z	0.142	false
2021-05-11T16:30Z	0.142	false
2021-05-11T16:15Z	0.142	false
2021-05-11T16:00Z	0.142	false
2021-05-11T15:45Z	0.142	false
2021-05-11T15:30Z	0.142	false
2021-05-11T15:15Z	0.142	false
2021-05-11T15:00Z	0.142	false
2021-05-11T14:45Z	0.142	false
2021-05-11T14:30Z	0.141	false
2021-05-11T14:15Z	0.142	false
2021-05-11T14:00Z	0.142	false
2021-05-11T13:45Z	0.142	false
2021-05-11T13:30Z	0.141	false
2021-05-11T13:15Z	0.141	false
2021-05-11T13:00Z	0.141	false
2021-05-11T12:45Z	0.142	false
2021-05-11T12:30Z	0.141	false
2021-05-11T12:15Z	0.142	false
2021-05-11T12:00Z	0.142	false
2021-05-11T11:45Z	0.141	false
2021-05-11T11:30Z	0.141	false
2021-05-11T11:15Z	0.142	false
2021-05-11T11:00Z	0.142	false
2021-05-11T10:45Z	0.144	false
2021-05-11T10:30Z	0.14	false
2021-05-11T10:15Z	0.141	false
2021-05-11T10:00Z	0.141	false
2021-05-11T09:45Z	0.141	false
2021-05-11T09:30Z	0.142	false
2021-05-11T09:15Z	0.141	false
2021-05-11T09:00Z	0.141	false
2021-05-11T08:45Z	0.142	false
2021-05-11T08:30Z	0.141	false
2021-05-11T08:15Z	0.141	false
2021-05-11T08:00Z	0.142	false
2021-05-11T07:45Z	0.142	false
2021-05-11T07:30Z	0.142	false
2021-05-11T07:15Z	0.141	false
2021-05-11T07:00Z	0.142	false
2021-05-11T06:45Z	0.142	false
2021-05-11T06:30Z	0.142	false
2021-05-11T06:15Z	0.142	false
2021-05-11T06:00Z	0.142	false
2021-05-11T05:45Z	0.142	false
2021-05-11T05:30Z	0.143	false
2021-05-11T05:15Z	0.143	false
2021-05-11T05:00Z	0.143	false
2021-05-11T04:45Z	0.143	false
2021-05-11T04:30Z	0.143	false
2021-05-11T04:15Z	0.142	false
2021-05-11T04:00Z	0.143	false
2021-05-11T03:45Z	0.142	false
2021-05-11T03:30Z	0.143	false
2021-05-11T03:15Z	0.143	false
2021-05-11T03:00Z	0.143	false
2021-05-11T02:45Z	0.143	false
2021-05-11T02:30Z	0.143	false
2021-05-11T02:15Z	0.143	false
2021-05-11T02:00Z	0.143	false
2021-05-11T01:45Z	0.143	false
2021-05-11T01:30Z	0.143	false
2021-05-11T01:15Z	0.143	false
2021-05-11T01:00Z	0.143	false
2021-05-11T00:45Z	0.143	false
2021-05-11T00:30Z	0.143	false
2021-05-11T00:15Z	0.143	false
2021-05-11T00:00Z	0.143	false
2021-05-10T23:45Z	0.143	false
2021-05-10T23:30Z	0.143	false
2021-05-10T23:15Z	0.143	false
2021-05-10T23:00Z	0.143	false
2021-05-10T22:45Z	0.142	false
2021-05-10T22:30Z	0.143	false
2021-05-10T22:15Z	0.143	false
2021-05-10T22:00Z	0.143	false
2021-05-10T21:45Z	0.142	false
2021-05-10T21:30Z	0.143	false
2021-05-10T21:15Z	0.143	false
2021-05-10T21:00Z	0.142	false
2021-05-10T20:45Z	0.142	false
2021-05-10T20:30Z	0.143	false
2021-05-10T20:15Z	0.142	false
2021-05-10T20:00Z	0.142	false
2021-05-10T19:45Z	0.142	false
2021-05-10T19:30Z	0.142	false
2021-05-10T19:15Z	0.142	false
2021-05-10T19:00Z	0.142	false
2021-05-10T18:45Z	0.142	false
2021-05-10T18:30Z	0.142	false
2021-05-10T18:15Z	0.142	false
2021-05-10T18:00Z	0.142	false
2021-05-10T17:45Z	0.142	false
2021-05-10T17:30Z	0.142	false
2021-05-10T17:15Z	0.142	false
2021-05-10T17:00Z	0.142	false
2021-05-10T16:45Z	0.141	false
2021-05-10T16:30Z	0.141	false
2021-05-10T16:15Z	0.143	false
2021-05-10T16:00Z	0.142	false
2021-05-10T15:45Z	0.141	false
2021-05-10T15:30Z	0.142	false
2021-05-10T15:15Z	0.142	false
2021-05-10T15:00Z	0.142	false
2021-05-10T14:45Z	0.142	false
2021-05-10T14:30Z	0.142	false
2021-05-10T14:15Z	0.141	false
2021-05-10T14:00Z	0.141	false
2021-05-10T13:45Z	0.142	false
2021-05-10T13:30Z	0.142	false
2021-05-10T13:15Z	0.142	false
2021-05-10T13:00Z	0.141	false
2021-05-10T12:45Z	0.141	false
2021-05-10T12:30Z	0.141	false
2021-05-10T12:15Z	0.141	false
2021-05-10T12:00Z	0.143	false
2021-05-10T11:45Z	0.142	false
2021-05-10T11:30Z	0.141	false
2021-05-10T11:15Z	0.143	false
2021-05-10T11:00Z	0.143	false
2021-05-10T10:45Z	0.141	false
2021-05-10T10:30Z	0.141	false
2021-05-10T10:15Z	0.141	false
2021-05-10T10:00Z	0.14	false
2021-05-10T09:45Z	0.142	false
2021-05-10T09:30Z	0.142	false
2021-05-10T09:15Z	0.141	false
2021-05-10T09:00Z	0.14	false
2021-05-10T08:45Z	0.141	false
2021-05-10T08:30Z	0.141	false
2021-05-10T08:15Z	0.141	false
2021-05-10T08:00Z	0.143	false
2021-05-10T07:45Z	0.142	false
2021-05-10T07:30Z	0.141	false
2021-05-10T07:15Z	0.142	false
2021-05-10T07:00Z	0.142	false
2021-05-10T06:45Z	0.142	false
2021-05-10T06:30Z	0.142	false
2021-05-10T06:15Z	0.142	false
2021-05-10T06:00Z	0.142	false
2021-05-10T05:45Z	0.143	false
2021-05-10T05:30Z	0.142	false
2021-05-10T05:15Z	0.142	false
2021-05-10T05:00Z	0.142	false
2021-05-10T04:45Z	0.142	false
2021-05-10T04:30Z	0.142	false
2021-05-10T04:15Z	0.142	false
2021-05-10T04:00Z	0.142	false
2021-05-10T03:45Z	0.142	false
2021-05-10T03:30Z	0.142	false
2021-05-10T03:15Z	0.142	false
2021-05-10T03:00Z	0.142	false
2021-05-10T02:45Z	0.142	false
2021-05-10T02:30Z	0.142	false
2021-05-10T02:15Z	0.142	false
2021-05-10T02:00Z	0.142	false
2021-05-10T01:45Z	0.142	false
2021-05-10T01:30Z	0.142	false
2021-05-10T01:15Z	0.142	false
2021-05-10T01:00Z	0.142	false
2021-05-10T00:45Z	0.142	false
2021-05-10T00:30Z	0.141	false
2021-05-10T00:15Z	0.141	false
2021-05-10T00:00Z	0.141	false
2021-05-09T23:45Z	0.142	false
2021-05-09T23:30Z	0.141	false
2021-05-09T23:15Z	0.142	false
2021-05-09T23:00Z	0.142	false
2021-05-09T22:45Z	0.141	false
2021-05-09T22:30Z	0.141	false
2021-05-09T22:15Z	0.141	false
2021-05-09T22:00Z	0.141	false
2021-05-09T21:45Z	0.142	false
2021-05-09T21:30Z	0.141	false
2021-05-09T21:15Z	0.141	false
2021-05-09T21:00Z	0.141	false
2021-05-09T20:45Z	0.141	false
2021-05-09T20:30Z	0.141	false
2021-05-09T20:15Z	0.141	false
2021-05-09T20:00Z	0.141	false
2021-05-09T19:45Z	0.141	false
2021-05-09T19:30Z	0.141	false
2021-05-09T19:15Z	0.141	false
2021-05-09T19:00Z	0.141	false
2021-05-09T18:45Z	0.141	false
2021-05-09T18:30Z	0.141	false
2021-05-09T18:15Z	0.141	false
2021-05-09T18:00Z	0.141	false
2021-05-09T17:45Z	0.141	false
2021-05-09T17:30Z	0.141	false
2021-05-09T17:15Z	0.141	false
2021-05-09T17:00Z	0.141	false
2021-05-09T16:45Z	0.141	false
2021-05-09T16:30Z	0.141	false
2021-05-09T16:15Z	0.141	false
2021-05-09T16:00Z	0.141	false
2021-05-09T15:45Z	0.141	false
2021-05-09T15:30Z	0.141	false
2021-05-09T15:15Z	0.141	false
2021-05-09T15:00Z	0.141	false
2021-05-09T14:45Z	0.141	false
2021-05-09T14:30Z	0.141	false
2021-05-09T14:15Z	0.141	false
2021-05-09T14:00Z	0.141	false
2021-05-09T13:45Z	0.141	false
2021-05-09T13:30Z	0.141	false
2021-05-09T13:15Z	0.141	false
2021-05-09T13:00Z	0.141	false
2021-05-09T12:45Z	0.14	false
2021-05-09T12:30Z	0.141	false
2021-05-09T12:15Z	0.141	false
2021-05-09T12:00Z	0.141	false
2021-05-09T11:45Z	0.14	false
2021-05-09T11:30Z	0.141	false
2021-05-09T11:15Z	0.141	false
2021-05-09T11:00Z	0.142	false
2021-05-09T10:45Z	0.141	false
2021-05-09T10:30Z	0.14	false
2021-05-09T10:15Z	0.14	false
2021-05-09T10:00Z	0.141	false
2021-05-09T09:45Z	0.141	false
2021-05-09T09:30Z	0.14	false
2021-05-09T09:15Z	0.141	false
2021-05-09T09:00Z	0.14	false
2021-05-09T08:45Z	0.141	false
2021-05-09T08:30Z	0.139	false
2021-05-09T08:15Z	0.14	false
2021-05-09T08:00Z	0.142	false
2021-05-09T07:45Z	0.141	false
2021-05-09T07:30Z	0.141	false
2021-05-09T07:15Z	0.141	false
2021-05-09T07:00Z	0.141	false
2021-05-09T06:45Z	0.141	false
2021-05-09T06:30Z	0.14	false

Forecast data

Key information

• Station name: Idless Dam
• Station ID: 3171
• River name: River Allen
• Typical range: 0.05m to 1.10m
• Highest level on record: 1.25m on 07 December 2000
• Site datum: 1.25mAOD (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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