River level River Alne at Henley River

Check for flood warnings in this area

Latest recorded level 0.42m at 4:00am Tuesday 22 January 2019.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 0.55m here, minor flooding is possible in this area
• Highest recorded level. Hide
• Show highest recorded level

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Observed data

DateTime	Value	Error
2019-01-22T04:00Z	0.418	false
2019-01-22T03:45Z	0.418	false
2019-01-22T03:30Z	0.418	false
2019-01-22T03:15Z	0.418	false
2019-01-22T03:00Z	0.418	false
2019-01-22T02:45Z	0.418	false
2019-01-22T02:30Z	0.42	false
2019-01-22T02:15Z	0.42	false
2019-01-22T02:00Z	0.42	false
2019-01-22T01:45Z	0.42	false
2019-01-22T01:30Z	0.42	false
2019-01-22T01:15Z	0.42	false
2019-01-22T01:00Z	0.419	false
2019-01-22T00:45Z	0.418	false
2019-01-22T00:30Z	0.417	false
2019-01-22T00:15Z	0.415	false
2019-01-22T00:00Z	0.414	false
2019-01-21T23:45Z	0.413	false
2019-01-21T23:30Z	0.412	false
2019-01-21T23:15Z	0.413	false
2019-01-21T23:00Z	0.412	false
2019-01-21T22:45Z	0.412	false
2019-01-21T22:30Z	0.413	false
2019-01-21T22:15Z	0.412	false
2019-01-21T22:00Z	0.412	false
2019-01-21T21:45Z	0.412	false
2019-01-21T21:30Z	0.411	false
2019-01-21T21:15Z	0.412	false
2019-01-21T21:00Z	0.411	false
2019-01-21T20:45Z	0.412	false
2019-01-21T20:30Z	0.411	false
2019-01-21T20:15Z	0.412	false
2019-01-21T20:00Z	0.412	false
2019-01-21T19:45Z	0.412	false
2019-01-21T19:30Z	0.411	false
2019-01-21T19:15Z	0.412	false
2019-01-21T19:00Z	0.412	false
2019-01-21T18:45Z	0.411	false
2019-01-21T18:30Z	0.411	false
2019-01-21T18:15Z	0.412	false
2019-01-21T18:00Z	0.411	false
2019-01-21T17:45Z	0.411	false
2019-01-21T17:30Z	0.411	false
2019-01-21T17:15Z	0.411	false
2019-01-21T17:00Z	0.411	false
2019-01-21T16:45Z	0.411	false
2019-01-21T16:30Z	0.411	false
2019-01-21T16:15Z	0.411	false
2019-01-21T16:00Z	0.411	false
2019-01-21T15:45Z	0.411	false
2019-01-21T15:30Z	0.411	false
2019-01-21T15:15Z	0.41	false
2019-01-21T15:00Z	0.411	false
2019-01-21T14:45Z	0.411	false
2019-01-21T14:30Z	0.411	false
2019-01-21T14:15Z	0.411	false
2019-01-21T14:00Z	0.411	false
2019-01-21T13:45Z	0.411	false
2019-01-21T13:30Z	0.411	false
2019-01-21T13:15Z	0.411	false
2019-01-21T13:00Z	0.41	false
2019-01-21T12:45Z	0.41	false
2019-01-21T12:30Z	0.411	false
2019-01-21T12:15Z	0.411	false
2019-01-21T12:00Z	0.411	false
2019-01-21T11:45Z	0.411	false
2019-01-21T11:30Z	0.411	false
2019-01-21T11:15Z	0.41	false
2019-01-21T11:00Z	0.411	false
2019-01-21T10:45Z	0.411	false
2019-01-21T10:30Z	0.411	false
2019-01-21T10:15Z	0.411	false
2019-01-21T10:00Z	0.411	false
2019-01-21T09:45Z	0.411	false
2019-01-21T09:30Z	0.411	false
2019-01-21T09:15Z	0.411	false
2019-01-21T09:00Z	0.411	false
2019-01-21T08:45Z	0.411	false
2019-01-21T08:30Z	0.411	false
2019-01-21T08:15Z	0.411	false
2019-01-21T08:00Z	0.411	false
2019-01-21T07:45Z	0.411	false
2019-01-21T07:30Z	0.411	false
2019-01-21T07:15Z	0.411	false
2019-01-21T07:00Z	0.411	false
2019-01-21T06:45Z	0.411	false
2019-01-21T06:30Z	0.411	false
2019-01-21T06:15Z	0.412	false
2019-01-21T06:00Z	0.411	false
2019-01-21T05:45Z	0.412	false
2019-01-21T05:30Z	0.411	false
2019-01-21T05:15Z	0.412	false
2019-01-21T05:00Z	0.411	false
2019-01-21T04:45Z	0.412	false
2019-01-21T04:30Z	0.412	false
2019-01-21T04:15Z	0.412	false
2019-01-21T04:00Z	0.412	false
2019-01-21T03:45Z	0.412	false
2019-01-21T03:30Z	0.412	false
2019-01-21T03:15Z	0.412	false
2019-01-21T03:00Z	0.412	false
2019-01-21T02:45Z	0.412	false
2019-01-21T02:30Z	0.412	false
2019-01-21T02:15Z	0.412	false
2019-01-21T02:00Z	0.412	false
2019-01-21T01:45Z	0.412	false
2019-01-21T01:30Z	0.412	false
2019-01-21T01:15Z	0.412	false
2019-01-21T01:00Z	0.412	false
2019-01-21T00:45Z	0.412	false
2019-01-21T00:30Z	0.412	false
2019-01-21T00:15Z	0.412	false
2019-01-21T00:00Z	0.412	false
2019-01-20T23:45Z	0.412	false
2019-01-20T23:30Z	0.412	false
2019-01-20T23:15Z	0.412	false
2019-01-20T23:00Z	0.412	false
2019-01-20T22:45Z	0.412	false
2019-01-20T22:30Z	0.413	false
2019-01-20T22:15Z	0.413	false
2019-01-20T22:00Z	0.413	false
2019-01-20T21:45Z	0.413	false
2019-01-20T21:30Z	0.413	false
2019-01-20T21:15Z	0.413	false
2019-01-20T21:00Z	0.413	false
2019-01-20T20:45Z	0.414	false
2019-01-20T20:30Z	0.414	false
2019-01-20T20:15Z	0.413	false
2019-01-20T20:00Z	0.414	false
2019-01-20T19:45Z	0.413	false
2019-01-20T19:30Z	0.414	false
2019-01-20T19:15Z	0.414	false
2019-01-20T19:00Z	0.414	false
2019-01-20T18:45Z	0.414	false
2019-01-20T18:30Z	0.414	false
2019-01-20T18:15Z	0.414	false
2019-01-20T18:00Z	0.414	false
2019-01-20T17:45Z	0.414	false
2019-01-20T17:30Z	0.413	false
2019-01-20T17:15Z	0.413	false
2019-01-20T17:00Z	0.414	false
2019-01-20T16:45Z	0.414	false
2019-01-20T16:30Z	0.414	false
2019-01-20T16:15Z	0.414	false
2019-01-20T16:00Z	0.414	false
2019-01-20T15:45Z	0.414	false
2019-01-20T15:30Z	0.415	false
2019-01-20T15:15Z	0.415	false
2019-01-20T15:00Z	0.415	false
2019-01-20T14:45Z	0.415	false
2019-01-20T14:30Z	0.415	false
2019-01-20T14:15Z	0.414	false
2019-01-20T14:00Z	0.414	false
2019-01-20T13:45Z	0.415	false
2019-01-20T13:30Z	0.414	false
2019-01-20T13:15Z	0.414	false
2019-01-20T13:00Z	0.414	false
2019-01-20T12:45Z	0.414	false
2019-01-20T12:30Z	0.414	false
2019-01-20T12:15Z	0.415	false
2019-01-20T12:00Z	0.415	false
2019-01-20T11:45Z	0.414	false
2019-01-20T11:30Z	0.415	false
2019-01-20T11:15Z	0.415	false
2019-01-20T11:00Z	0.415	false
2019-01-20T10:45Z	0.415	false
2019-01-20T10:30Z	0.415	false
2019-01-20T10:15Z	0.415	false
2019-01-20T10:00Z	0.415	false
2019-01-20T09:45Z	0.415	false
2019-01-20T09:30Z	0.416	false
2019-01-20T09:15Z	0.415	false
2019-01-20T09:00Z	0.416	false
2019-01-20T08:45Z	0.416	false
2019-01-20T08:30Z	0.416	false
2019-01-20T08:15Z	0.416	false
2019-01-20T08:00Z	0.416	false
2019-01-20T07:45Z	0.416	false
2019-01-20T07:30Z	0.416	false
2019-01-20T07:15Z	0.416	false
2019-01-20T07:00Z	0.416	false
2019-01-20T06:45Z	0.416	false
2019-01-20T06:30Z	0.417	false
2019-01-20T06:15Z	0.417	false
2019-01-20T06:00Z	0.416	false
2019-01-20T05:45Z	0.417	false
2019-01-20T05:30Z	0.417	false
2019-01-20T05:15Z	0.417	false
2019-01-20T05:00Z	0.417	false
2019-01-20T04:45Z	0.418	false
2019-01-20T04:30Z	0.418	false
2019-01-20T04:15Z	0.418	false
2019-01-20T04:00Z	0.417	false
2019-01-20T03:45Z	0.418	false
2019-01-20T03:30Z	0.417	false
2019-01-20T03:15Z	0.417	false
2019-01-20T03:00Z	0.418	false
2019-01-20T02:45Z	0.418	false
2019-01-20T02:30Z	0.418	false
2019-01-20T02:15Z	0.418	false
2019-01-20T02:00Z	0.418	false
2019-01-20T01:45Z	0.418	false
2019-01-20T01:30Z	0.418	false
2019-01-20T01:15Z	0.418	false
2019-01-20T01:00Z	0.418	false
2019-01-20T00:45Z	0.418	false
2019-01-20T00:30Z	0.418	false
2019-01-20T00:15Z	0.418	false
2019-01-20T00:00Z	0.418	false
2019-01-19T23:45Z	0.418	false
2019-01-19T23:30Z	0.418	false
2019-01-19T23:15Z	0.418	false
2019-01-19T23:00Z	0.418	false
2019-01-19T22:45Z	0.418	false
2019-01-19T22:30Z	0.418	false
2019-01-19T22:15Z	0.418	false
2019-01-19T22:00Z	0.418	false
2019-01-19T21:45Z	0.417	false
2019-01-19T21:30Z	0.418	false
2019-01-19T21:15Z	0.418	false
2019-01-19T21:00Z	0.418	false
2019-01-19T20:45Z	0.417	false
2019-01-19T20:30Z	0.418	false
2019-01-19T20:15Z	0.417	false
2019-01-19T20:00Z	0.417	false
2019-01-19T19:45Z	0.417	false
2019-01-19T19:30Z	0.417	false
2019-01-19T19:15Z	0.418	false
2019-01-19T19:00Z	0.418	false
2019-01-19T18:45Z	0.418	false
2019-01-19T18:30Z	0.418	false
2019-01-19T18:15Z	0.418	false
2019-01-19T18:00Z	0.417	false
2019-01-19T17:45Z	0.417	false
2019-01-19T17:30Z	0.416	false
2019-01-19T17:15Z	0.416	false
2019-01-19T17:00Z	0.416	false
2019-01-19T16:45Z	0.416	false
2019-01-19T16:30Z	0.416	false
2019-01-19T16:15Z	0.416	false
2019-01-19T16:00Z	0.417	false
2019-01-19T15:45Z	0.416	false
2019-01-19T15:30Z	0.416	false
2019-01-19T15:15Z	0.416	false
2019-01-19T15:00Z	0.416	false
2019-01-19T14:45Z	0.416	false
2019-01-19T14:30Z	0.416	false
2019-01-19T14:15Z	0.417	false
2019-01-19T14:00Z	0.416	false
2019-01-19T13:45Z	0.416	false
2019-01-19T13:30Z	0.417	false
2019-01-19T13:15Z	0.417	false
2019-01-19T13:00Z	0.417	false
2019-01-19T12:45Z	0.416	false
2019-01-19T12:30Z	0.415	false
2019-01-19T12:15Z	0.415	false
2019-01-19T12:00Z	0.415	false
2019-01-19T11:45Z	0.415	false
2019-01-19T11:30Z	0.415	false
2019-01-19T11:15Z	0.414	false
2019-01-19T11:00Z	0.414	false
2019-01-19T10:45Z	0.415	false
2019-01-19T10:30Z	0.414	false
2019-01-19T10:15Z	0.415	false
2019-01-19T10:00Z	0.415	false
2019-01-19T09:45Z	0.414	false
2019-01-19T09:30Z	0.415	false
2019-01-19T09:15Z	0.414	false
2019-01-19T09:00Z	0.415	false
2019-01-19T08:45Z	0.415	false
2019-01-19T08:30Z	0.414	false
2019-01-19T08:15Z	0.415	false
2019-01-19T08:00Z	0.414	false
2019-01-19T07:45Z	0.415	false
2019-01-19T07:30Z	0.415	false
2019-01-19T07:15Z	0.415	false
2019-01-19T07:00Z	0.415	false
2019-01-19T06:45Z	0.414	false
2019-01-19T06:30Z	0.414	false
2019-01-19T06:15Z	0.414	false
2019-01-19T06:00Z	0.414	false
2019-01-19T05:45Z	0.414	false
2019-01-19T05:30Z	0.413	false
2019-01-19T05:15Z	0.412	false
2019-01-19T05:00Z	0.412	false
2019-01-19T04:45Z	0.411	false
2019-01-19T04:30Z	0.411	false
2019-01-19T04:15Z	0.411	false
2019-01-19T04:00Z	0.411	false
2019-01-19T03:45Z	0.411	false
2019-01-19T03:30Z	0.411	false
2019-01-19T03:15Z	0.411	false
2019-01-19T03:00Z	0.41	false
2019-01-19T02:45Z	0.409	false
2019-01-19T02:30Z	0.41	false
2019-01-19T02:15Z	0.41	false
2019-01-19T02:00Z	0.41	false
2019-01-19T01:45Z	0.41	false
2019-01-19T01:30Z	0.41	false
2019-01-19T01:15Z	0.41	false
2019-01-19T01:00Z	0.41	false
2019-01-19T00:45Z	0.41	false
2019-01-19T00:30Z	0.409	false
2019-01-19T00:15Z	0.409	false
2019-01-19T00:00Z	0.409	false
2019-01-18T23:45Z	0.409	false
2019-01-18T23:30Z	0.409	false
2019-01-18T23:15Z	0.408	false
2019-01-18T23:00Z	0.408	false
2019-01-18T22:45Z	0.408	false
2019-01-18T22:30Z	0.407	false
2019-01-18T22:15Z	0.407	false
2019-01-18T22:00Z	0.407	false
2019-01-18T21:45Z	0.407	false
2019-01-18T21:30Z	0.407	false
2019-01-18T21:15Z	0.407	false
2019-01-18T21:00Z	0.406	false
2019-01-18T20:45Z	0.407	false
2019-01-18T20:30Z	0.406	false
2019-01-18T20:15Z	0.406	false
2019-01-18T20:00Z	0.406	false
2019-01-18T19:45Z	0.406	false
2019-01-18T19:30Z	0.406	false
2019-01-18T19:15Z	0.406	false
2019-01-18T19:00Z	0.406	false
2019-01-18T18:45Z	0.406	false
2019-01-18T18:30Z	0.406	false
2019-01-18T18:15Z	0.406	false
2019-01-18T18:00Z	0.406	false
2019-01-18T17:45Z	0.406	false
2019-01-18T17:30Z	0.406	false
2019-01-18T17:15Z	0.406	false
2019-01-18T17:00Z	0.406	false
2019-01-18T16:45Z	0.406	false
2019-01-18T16:30Z	0.406	false
2019-01-18T16:15Z	0.405	false
2019-01-18T16:00Z	0.406	false
2019-01-18T15:45Z	0.405	false
2019-01-18T15:30Z	0.405	false
2019-01-18T15:15Z	0.405	false
2019-01-18T15:00Z	0.405	false
2019-01-18T14:45Z	0.405	false
2019-01-18T14:30Z	0.405	false
2019-01-18T14:15Z	0.405	false
2019-01-18T14:00Z	0.405	false
2019-01-18T13:45Z	0.405	false
2019-01-18T13:30Z	0.405	false
2019-01-18T13:15Z	0.405	false
2019-01-18T13:00Z	0.406	false
2019-01-18T12:45Z	0.405	false
2019-01-18T12:30Z	0.405	false
2019-01-18T12:15Z	0.405	false
2019-01-18T12:00Z	0.405	false
2019-01-18T11:45Z	0.405	false
2019-01-18T11:30Z	0.405	false
2019-01-18T11:15Z	0.405	false
2019-01-18T11:00Z	0.406	false
2019-01-18T10:45Z	0.405	false
2019-01-18T10:30Z	0.405	false
2019-01-18T10:15Z	0.405	false
2019-01-18T10:00Z	0.405	false
2019-01-18T09:45Z	0.405	false
2019-01-18T09:30Z	0.405	false
2019-01-18T09:15Z	0.405	false
2019-01-18T09:00Z	0.405	false
2019-01-18T08:45Z	0.405	false
2019-01-18T08:30Z	0.405	false
2019-01-18T08:15Z	0.405	false
2019-01-18T08:00Z	0.405	false
2019-01-18T07:45Z	0.405	false
2019-01-18T07:30Z	0.405	false
2019-01-18T07:15Z	0.405	false
2019-01-18T07:00Z	0.405	false
2019-01-18T06:45Z	0.405	false
2019-01-18T06:30Z	0.406	false
2019-01-18T06:15Z	0.406	false
2019-01-18T06:00Z	0.405	false
2019-01-18T05:45Z	0.405	false
2019-01-18T05:30Z	0.405	false
2019-01-18T05:15Z	0.405	false
2019-01-18T05:00Z	0.405	false
2019-01-18T04:45Z	0.406	false
2019-01-18T04:30Z	0.405	false
2019-01-18T04:15Z	0.405	false
2019-01-18T04:00Z	0.406	false
2019-01-18T03:45Z	0.405	false
2019-01-18T03:30Z	0.406	false
2019-01-18T03:15Z	0.405	false
2019-01-18T03:00Z	0.405	false
2019-01-18T02:45Z	0.406	false
2019-01-18T02:30Z	0.405	false
2019-01-18T02:15Z	0.405	false
2019-01-18T02:00Z	0.405	false
2019-01-18T01:45Z	0.406	false
2019-01-18T01:30Z	0.406	false
2019-01-18T01:15Z	0.406	false
2019-01-18T01:00Z	0.406	false
2019-01-18T00:45Z	0.406	false
2019-01-18T00:30Z	0.406	false
2019-01-18T00:15Z	0.406	false
2019-01-18T00:00Z	0.406	false
2019-01-17T23:45Z	0.405	false
2019-01-17T23:30Z	0.406	false
2019-01-17T23:15Z	0.405	false
2019-01-17T23:00Z	0.405	false
2019-01-17T22:45Z	0.406	false
2019-01-17T22:30Z	0.406	false
2019-01-17T22:15Z	0.405	false
2019-01-17T22:00Z	0.406	false
2019-01-17T21:45Z	0.406	false
2019-01-17T21:30Z	0.406	false
2019-01-17T21:15Z	0.406	false
2019-01-17T21:00Z	0.406	false
2019-01-17T20:45Z	0.406	false
2019-01-17T20:30Z	0.406	false
2019-01-17T20:15Z	0.407	false
2019-01-17T20:00Z	0.407	false
2019-01-17T19:45Z	0.406	false
2019-01-17T19:30Z	0.407	false
2019-01-17T19:15Z	0.407	false
2019-01-17T19:00Z	0.407	false
2019-01-17T18:45Z	0.406	false
2019-01-17T18:30Z	0.406	false
2019-01-17T18:15Z	0.407	false
2019-01-17T18:00Z	0.407	false
2019-01-17T17:45Z	0.406	false
2019-01-17T17:30Z	0.407	false
2019-01-17T17:15Z	0.407	false
2019-01-17T17:00Z	0.406	false
2019-01-17T16:45Z	0.406	false
2019-01-17T16:30Z	0.407	false
2019-01-17T16:15Z	0.407	false
2019-01-17T16:00Z	0.406	false
2019-01-17T15:45Z	0.407	false
2019-01-17T15:30Z	0.407	false
2019-01-17T15:15Z	0.407	false
2019-01-17T15:00Z	0.407	false
2019-01-17T14:45Z	0.407	false
2019-01-17T14:30Z	0.407	false
2019-01-17T14:15Z	0.408	false
2019-01-17T14:00Z	0.408	false
2019-01-17T13:45Z	0.408	false
2019-01-17T13:30Z	0.408	false
2019-01-17T13:15Z	0.408	false
2019-01-17T13:00Z	0.408	false
2019-01-17T12:45Z	0.408	false
2019-01-17T12:30Z	0.408	false
2019-01-17T12:15Z	0.409	false
2019-01-17T12:00Z	0.408	false
2019-01-17T11:45Z	0.408	false
2019-01-17T11:30Z	0.409	false
2019-01-17T11:15Z	0.409	false
2019-01-17T11:00Z	0.409	false
2019-01-17T10:45Z	0.409	false
2019-01-17T10:30Z	0.409	false
2019-01-17T10:15Z	0.409	false
2019-01-17T10:00Z	0.41	false
2019-01-17T09:45Z	0.41	false
2019-01-17T09:30Z	0.409	false
2019-01-17T09:15Z	0.409	false
2019-01-17T09:00Z	0.41	false
2019-01-17T08:45Z	0.41	false
2019-01-17T08:30Z	0.411	false
2019-01-17T08:15Z	0.41	false
2019-01-17T08:00Z	0.411	false
2019-01-17T07:45Z	0.411	false
2019-01-17T07:30Z	0.411	false
2019-01-17T07:15Z	0.41	false
2019-01-17T07:00Z	0.411	false
2019-01-17T06:45Z	0.411	false
2019-01-17T06:30Z	0.411	false
2019-01-17T06:15Z	0.411	false
2019-01-17T06:00Z	0.411	false
2019-01-17T05:45Z	0.411	false
2019-01-17T05:30Z	0.411	false
2019-01-17T05:15Z	0.411	false
2019-01-17T05:00Z	0.41	false
2019-01-17T04:45Z	0.411	false
2019-01-17T04:30Z	0.411	false
2019-01-17T04:15Z	0.411	false

Forecast data

Key information

• Station name: Henley River
• Station ID: 2083
• River name: River Alne
• Typical range: 0.39m to 0.55m
• Highest level on record: 2.43m on 20 July 2007
• Site datum: 73.50mAOD (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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