River level River Alne at Henley River

Flooding is possible - Be prepared

The latest information indicates flooding is possible - Take action.

Check for flood warnings in this area

Latest recorded level 0.56m at 7:00pm Tuesday 25 February 2020.

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
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Observed data

DateTime	Value	Error
2020-02-25T19:00Z	0.557	false
2020-02-25T18:45Z	0.557	false
2020-02-25T18:30Z	0.558	false
2020-02-25T18:15Z	0.558	false
2020-02-25T18:00Z	0.559	false
2020-02-25T17:45Z	0.558	false
2020-02-25T17:30Z	0.559	false
2020-02-25T17:15Z	0.559	false
2020-02-25T17:00Z	0.559	false
2020-02-25T16:45Z	0.558	false
2020-02-25T16:30Z	0.558	false
2020-02-25T16:15Z	0.558	false
2020-02-25T16:00Z	0.557	false
2020-02-25T15:45Z	0.556	false
2020-02-25T15:30Z	0.556	false
2020-02-25T15:15Z	0.554	false
2020-02-25T15:00Z	0.555	false
2020-02-25T14:45Z	0.552	false
2020-02-25T14:30Z	0.552	false
2020-02-25T14:15Z	0.55	false
2020-02-25T14:00Z	0.55	false
2020-02-25T13:45Z	0.549	false
2020-02-25T13:30Z	0.549	false
2020-02-25T13:15Z	0.545	false
2020-02-25T13:00Z	0.543	false
2020-02-25T12:45Z	0.542	false
2020-02-25T12:30Z	0.542	false
2020-02-25T12:15Z	0.542	false
2020-02-25T12:00Z	0.542	false
2020-02-25T11:45Z	0.542	false
2020-02-25T11:30Z	0.543	false
2020-02-25T11:15Z	0.544	false
2020-02-25T11:00Z	0.544	false
2020-02-25T10:45Z	0.546	false
2020-02-25T10:30Z	0.546	false
2020-02-25T10:15Z	0.545	false
2020-02-25T10:00Z	0.547	false
2020-02-25T09:45Z	0.547	false
2020-02-25T09:30Z	0.548	false
2020-02-25T09:15Z	0.549	false
2020-02-25T09:00Z	0.548	false
2020-02-25T08:45Z	0.549	false
2020-02-25T08:30Z	0.55	false
2020-02-25T08:15Z	0.549	false
2020-02-25T08:00Z	0.55	false
2020-02-25T07:45Z	0.551	false
2020-02-25T07:30Z	0.552	false
2020-02-25T07:15Z	0.553	false
2020-02-25T07:00Z	0.554	false
2020-02-25T06:45Z	0.555	false
2020-02-25T06:30Z	0.555	false
2020-02-25T06:15Z	0.556	false
2020-02-25T06:00Z	0.557	false
2020-02-25T05:45Z	0.558	false
2020-02-25T05:30Z	0.559	false
2020-02-25T05:15Z	0.559	false
2020-02-25T05:00Z	0.56	false
2020-02-25T04:45Z	0.561	false
2020-02-25T04:30Z	0.562	false
2020-02-25T04:15Z	0.562	false
2020-02-25T04:00Z	0.563	false
2020-02-25T03:45Z	0.565	false
2020-02-25T03:30Z	0.567	false
2020-02-25T03:15Z	0.566	false
2020-02-25T03:00Z	0.569	false
2020-02-25T02:45Z	0.568	false
2020-02-25T02:30Z	0.57	false
2020-02-25T02:15Z	0.572	false
2020-02-25T02:00Z	0.573	false
2020-02-25T01:45Z	0.575	false
2020-02-25T01:30Z	0.576	false
2020-02-25T01:15Z	0.577	false
2020-02-25T01:00Z	0.578	false
2020-02-25T00:45Z	0.581	false
2020-02-25T00:30Z	0.581	false
2020-02-25T00:15Z	0.583	false
2020-02-25T00:00Z	0.585	false
2020-02-24T23:45Z	0.586	false
2020-02-24T23:30Z	0.588	false
2020-02-24T23:15Z	0.589	false
2020-02-24T23:00Z	0.593	false
2020-02-24T22:45Z	0.595	false
2020-02-24T22:30Z	0.596	false
2020-02-24T22:15Z	0.6	false
2020-02-24T22:00Z	0.602	false
2020-02-24T21:45Z	0.604	false
2020-02-24T21:30Z	0.607	false
2020-02-24T21:15Z	0.609	false
2020-02-24T21:00Z	0.612	false
2020-02-24T20:45Z	0.616	false
2020-02-24T20:30Z	0.621	false
2020-02-24T20:15Z	0.625	false
2020-02-24T20:00Z	0.63	false
2020-02-24T19:45Z	0.634	false
2020-02-24T19:30Z	0.639	false
2020-02-24T19:15Z	0.643	false
2020-02-24T19:00Z	0.649	false
2020-02-24T18:45Z	0.654	false
2020-02-24T18:30Z	0.662	false
2020-02-24T18:15Z	0.666	false
2020-02-24T18:00Z	0.671	false
2020-02-24T17:45Z	0.677	false
2020-02-24T17:30Z	0.687	false
2020-02-24T17:15Z	0.693	false
2020-02-24T17:00Z	0.702	false
2020-02-24T16:45Z	0.712	false
2020-02-24T16:30Z	0.721	false
2020-02-24T16:15Z	0.734	false
2020-02-24T16:00Z	0.747	false
2020-02-24T15:45Z	0.764	false
2020-02-24T15:30Z	0.775	false
2020-02-24T15:15Z	0.793	false
2020-02-24T15:00Z	0.814	false
2020-02-24T14:45Z	0.836	false
2020-02-24T14:30Z	0.869	false
2020-02-24T14:15Z	0.892	false
2020-02-24T14:00Z	0.917	false
2020-02-24T13:45Z	0.946	false
2020-02-24T13:30Z	0.958	false
2020-02-24T13:15Z	0.975	false
2020-02-24T13:00Z	0.977	false
2020-02-24T12:45Z	0.983	false
2020-02-24T12:30Z	0.966	false
2020-02-24T12:15Z	0.958	false
2020-02-24T12:00Z	0.943	false
2020-02-24T11:45Z	0.922	false
2020-02-24T11:30Z	0.89	false
2020-02-24T11:15Z	0.85	false
2020-02-24T11:00Z	0.819	false
2020-02-24T10:45Z	0.779	false
2020-02-24T10:30Z	0.723	false
2020-02-24T10:15Z	0.669	false
2020-02-24T10:00Z	0.629	false
2020-02-24T09:45Z	0.587	false
2020-02-24T09:30Z	0.562	false
2020-02-24T09:15Z	0.551	false
2020-02-24T09:00Z	0.544	false
2020-02-24T08:45Z	0.54	false
2020-02-24T08:30Z	0.535	false
2020-02-24T08:15Z	0.532	false
2020-02-24T08:00Z	0.529	false
2020-02-24T07:45Z	0.528	false
2020-02-24T07:30Z	0.526	false
2020-02-24T07:15Z	0.525	false
2020-02-24T07:00Z	0.525	false
2020-02-24T06:45Z	0.526	false
2020-02-24T06:30Z	0.525	false
2020-02-24T06:15Z	0.525	false
2020-02-24T06:00Z	0.525	false
2020-02-24T05:45Z	0.525	false
2020-02-24T05:30Z	0.526	false
2020-02-24T05:15Z	0.526	false
2020-02-24T05:00Z	0.526	false
2020-02-24T04:45Z	0.526	false
2020-02-24T04:30Z	0.525	false
2020-02-24T04:15Z	0.526	false
2020-02-24T04:00Z	0.526	false
2020-02-24T03:45Z	0.526	false
2020-02-24T03:30Z	0.527	false
2020-02-24T03:15Z	0.527	false
2020-02-24T03:00Z	0.528	false
2020-02-24T02:45Z	0.528	false
2020-02-24T02:30Z	0.528	false
2020-02-24T02:15Z	0.529	false
2020-02-24T02:00Z	0.529	false
2020-02-24T01:45Z	0.529	false
2020-02-24T01:30Z	0.53	false
2020-02-24T01:15Z	0.53	false
2020-02-24T01:00Z	0.53	false
2020-02-24T00:45Z	0.53	false
2020-02-24T00:30Z	0.531	false
2020-02-24T00:15Z	0.532	false
2020-02-24T00:00Z	0.532	false
2020-02-23T23:45Z	0.533	false
2020-02-23T23:30Z	0.534	false
2020-02-23T23:15Z	0.534	false
2020-02-23T23:00Z	0.534	false
2020-02-23T22:45Z	0.535	false
2020-02-23T22:30Z	0.535	false
2020-02-23T22:15Z	0.537	false
2020-02-23T22:00Z	0.538	false
2020-02-23T21:45Z	0.539	false
2020-02-23T21:30Z	0.54	false
2020-02-23T21:15Z	0.541	false
2020-02-23T21:00Z	0.541	false
2020-02-23T20:45Z	0.542	false
2020-02-23T20:30Z	0.544	false
2020-02-23T20:15Z	0.545	false
2020-02-23T20:00Z	0.546	false
2020-02-23T19:45Z	0.548	false
2020-02-23T19:30Z	0.549	false
2020-02-23T19:15Z	0.55	false
2020-02-23T19:00Z	0.552	false
2020-02-23T18:45Z	0.554	false
2020-02-23T18:30Z	0.556	false
2020-02-23T18:15Z	0.558	false
2020-02-23T18:00Z	0.559	false
2020-02-23T17:45Z	0.561	false
2020-02-23T17:30Z	0.563	false
2020-02-23T17:15Z	0.567	false
2020-02-23T17:00Z	0.568	false
2020-02-23T16:45Z	0.571	false
2020-02-23T16:30Z	0.574	false
2020-02-23T16:15Z	0.577	false
2020-02-23T16:00Z	0.579	false
2020-02-23T15:45Z	0.582	false
2020-02-23T15:30Z	0.586	false
2020-02-23T15:15Z	0.588	false
2020-02-23T15:00Z	0.593	false
2020-02-23T14:45Z	0.597	false
2020-02-23T14:30Z	0.6	false
2020-02-23T14:15Z	0.602	false
2020-02-23T14:00Z	0.607	false
2020-02-23T13:45Z	0.61	false
2020-02-23T13:30Z	0.613	false
2020-02-23T13:15Z	0.617	false
2020-02-23T13:00Z	0.62	false
2020-02-23T12:45Z	0.621	false
2020-02-23T12:30Z	0.624	false
2020-02-23T12:15Z	0.623	false
2020-02-23T12:00Z	0.621	false
2020-02-23T11:45Z	0.618	false
2020-02-23T11:30Z	0.619	false
2020-02-23T11:15Z	0.618	false
2020-02-23T11:00Z	0.618	false
2020-02-23T10:45Z	0.619	false
2020-02-23T10:30Z	0.621	false
2020-02-23T10:15Z	0.622	false
2020-02-23T10:00Z	0.627	false
2020-02-23T09:45Z	0.631	false
2020-02-23T09:30Z	0.636	false
2020-02-23T09:15Z	0.638	false
2020-02-23T09:00Z	0.642	false
2020-02-23T08:45Z	0.642	false
2020-02-23T08:30Z	0.647	false
2020-02-23T08:15Z	0.648	false
2020-02-23T08:00Z	0.647	false
2020-02-23T07:45Z	0.644	false
2020-02-23T07:30Z	0.638	false
2020-02-23T07:15Z	0.633	false
2020-02-23T07:00Z	0.63	false
2020-02-23T06:45Z	0.624	false
2020-02-23T06:30Z	0.615	false
2020-02-23T06:15Z	0.604	false
2020-02-23T06:00Z	0.591	false
2020-02-23T05:45Z	0.576	false
2020-02-23T05:30Z	0.558	false
2020-02-23T05:15Z	0.547	false
2020-02-23T05:00Z	0.537	false
2020-02-23T04:45Z	0.531	false
2020-02-23T04:30Z	0.526	false
2020-02-23T04:15Z	0.521	false
2020-02-23T04:00Z	0.518	false
2020-02-23T03:45Z	0.516	false
2020-02-23T03:30Z	0.514	false
2020-02-23T03:15Z	0.512	false
2020-02-23T03:00Z	0.51	false
2020-02-23T02:45Z	0.508	false
2020-02-23T02:30Z	0.506	false
2020-02-23T02:15Z	0.505	false
2020-02-23T02:00Z	0.503	false
2020-02-23T01:45Z	0.503	false
2020-02-23T01:30Z	0.502	false
2020-02-23T01:15Z	0.502	false
2020-02-23T01:00Z	0.502	false
2020-02-23T00:45Z	0.502	false
2020-02-23T00:30Z	0.502	false
2020-02-23T00:15Z	0.502	false
2020-02-23T00:00Z	0.501	false
2020-02-22T23:45Z	0.501	false
2020-02-22T23:30Z	0.5	false
2020-02-22T23:15Z	0.501	false
2020-02-22T23:00Z	0.5	false
2020-02-22T22:45Z	0.501	false
2020-02-22T22:30Z	0.5	false
2020-02-22T22:15Z	0.501	false
2020-02-22T22:00Z	0.501	false
2020-02-22T21:45Z	0.5	false
2020-02-22T21:30Z	0.501	false
2020-02-22T21:15Z	0.501	false
2020-02-22T21:00Z	0.502	false
2020-02-22T20:45Z	0.501	false
2020-02-22T20:30Z	0.502	false
2020-02-22T20:15Z	0.501	false
2020-02-22T20:00Z	0.502	false
2020-02-22T19:45Z	0.503	false
2020-02-22T19:30Z	0.502	false
2020-02-22T19:15Z	0.502	false
2020-02-22T19:00Z	0.502	false
2020-02-22T18:45Z	0.502	false
2020-02-22T18:30Z	0.503	false
2020-02-22T18:15Z	0.503	false
2020-02-22T18:00Z	0.503	false
2020-02-22T17:45Z	0.504	false
2020-02-22T17:30Z	0.504	false
2020-02-22T17:15Z	0.504	false
2020-02-22T17:00Z	0.504	false
2020-02-22T16:45Z	0.504	false
2020-02-22T16:30Z	0.505	false
2020-02-22T16:15Z	0.505	false
2020-02-22T16:00Z	0.505	false
2020-02-22T15:45Z	0.506	false
2020-02-22T15:30Z	0.507	false
2020-02-22T15:15Z	0.506	false
2020-02-22T15:00Z	0.507	false
2020-02-22T14:45Z	0.507	false
2020-02-22T14:30Z	0.507	false
2020-02-22T14:15Z	0.508	false
2020-02-22T14:00Z	0.509	false
2020-02-22T13:45Z	0.509	false
2020-02-22T13:30Z	0.508	false
2020-02-22T13:15Z	0.509	false
2020-02-22T13:00Z	0.509	false
2020-02-22T12:45Z	0.51	false
2020-02-22T12:30Z	0.51	false
2020-02-22T12:15Z	0.509	false
2020-02-22T12:00Z	0.51	false
2020-02-22T11:45Z	0.511	false
2020-02-22T11:30Z	0.511	false
2020-02-22T11:15Z	0.511	false
2020-02-22T11:00Z	0.512	false
2020-02-22T10:45Z	0.512	false
2020-02-22T10:30Z	0.513	false
2020-02-22T10:15Z	0.513	false
2020-02-22T10:00Z	0.513	false
2020-02-22T09:45Z	0.514	false
2020-02-22T09:30Z	0.514	false
2020-02-22T09:15Z	0.514	false
2020-02-22T09:00Z	0.515	false
2020-02-22T08:45Z	0.514	false
2020-02-22T08:30Z	0.516	false
2020-02-22T08:15Z	0.515	false
2020-02-22T08:00Z	0.516	false
2020-02-22T07:45Z	0.514	false
2020-02-22T07:30Z	0.515	false
2020-02-22T07:15Z	0.515	false
2020-02-22T07:00Z	0.516	false
2020-02-22T06:45Z	0.516	false
2020-02-22T06:30Z	0.516	false
2020-02-22T06:15Z	0.515	false
2020-02-22T06:00Z	0.516	false
2020-02-22T05:45Z	0.517	false
2020-02-22T05:30Z	0.517	false
2020-02-22T05:15Z	0.517	false
2020-02-22T05:00Z	0.517	false
2020-02-22T04:45Z	0.516	false
2020-02-22T04:30Z	0.518	false
2020-02-22T04:15Z	0.517	false
2020-02-22T04:00Z	0.518	false
2020-02-22T03:45Z	0.518	false
2020-02-22T03:30Z	0.518	false
2020-02-22T03:15Z	0.518	false
2020-02-22T03:00Z	0.519	false
2020-02-22T02:45Z	0.518	false
2020-02-22T02:30Z	0.519	false
2020-02-22T02:15Z	0.519	false
2020-02-22T02:00Z	0.52	false
2020-02-22T01:45Z	0.52	false
2020-02-22T01:30Z	0.519	false
2020-02-22T01:15Z	0.519	false
2020-02-22T01:00Z	0.52	false
2020-02-22T00:45Z	0.52	false
2020-02-22T00:30Z	0.52	false
2020-02-22T00:15Z	0.521	false
2020-02-22T00:00Z	0.52	false
2020-02-21T23:45Z	0.521	false
2020-02-21T23:30Z	0.521	false
2020-02-21T23:15Z	0.52	false
2020-02-21T23:00Z	0.522	false
2020-02-21T22:45Z	0.522	false
2020-02-21T22:30Z	0.521	false
2020-02-21T22:15Z	0.521	false
2020-02-21T22:00Z	0.523	false
2020-02-21T21:45Z	0.522	false
2020-02-21T21:30Z	0.523	false
2020-02-21T21:15Z	0.524	false
2020-02-21T21:00Z	0.523	false
2020-02-21T20:45Z	0.524	false
2020-02-21T20:30Z	0.524	false
2020-02-21T20:15Z	0.524	false
2020-02-21T20:00Z	0.524	false
2020-02-21T19:45Z	0.524	false
2020-02-21T19:30Z	0.525	false
2020-02-21T19:15Z	0.525	false
2020-02-21T19:00Z	0.526	false
2020-02-21T18:45Z	0.527	false
2020-02-21T18:30Z	0.526	false
2020-02-21T18:15Z	0.527	false
2020-02-21T18:00Z	0.528	false
2020-02-21T17:45Z	0.527	false
2020-02-21T17:30Z	0.528	false
2020-02-21T17:15Z	0.528	false
2020-02-21T17:00Z	0.529	false
2020-02-21T16:45Z	0.529	false
2020-02-21T16:30Z	0.528	false
2020-02-21T16:15Z	0.529	false
2020-02-21T16:00Z	0.53	false
2020-02-21T15:45Z	0.529	false
2020-02-21T15:30Z	0.53	false
2020-02-21T15:15Z	0.531	false
2020-02-21T15:00Z	0.531	false
2020-02-21T14:45Z	0.532	false
2020-02-21T14:30Z	0.532	false
2020-02-21T14:15Z	0.531	false
2020-02-21T14:00Z	0.532	false
2020-02-21T13:45Z	0.533	false
2020-02-21T13:30Z	0.533	false
2020-02-21T13:15Z	0.533	false
2020-02-21T13:00Z	0.533	false
2020-02-21T12:45Z	0.534	false
2020-02-21T12:30Z	0.534	false
2020-02-21T12:15Z	0.534	false
2020-02-21T12:00Z	0.535	false
2020-02-21T11:45Z	0.535	false
2020-02-21T11:30Z	0.536	false
2020-02-21T11:15Z	0.536	false
2020-02-21T11:00Z	0.537	false
2020-02-21T10:45Z	0.537	false
2020-02-21T10:30Z	0.538	false
2020-02-21T10:15Z	0.539	false
2020-02-21T10:00Z	0.538	false
2020-02-21T09:45Z	0.539	false
2020-02-21T09:30Z	0.54	false
2020-02-21T09:15Z	0.54	false
2020-02-21T09:00Z	0.539	false
2020-02-21T08:45Z	0.54	false
2020-02-21T08:30Z	0.541	false
2020-02-21T08:15Z	0.541	false
2020-02-21T08:00Z	0.541	false
2020-02-21T07:45Z	0.543	false
2020-02-21T07:30Z	0.543	false
2020-02-21T07:15Z	0.543	false
2020-02-21T07:00Z	0.544	false
2020-02-21T06:45Z	0.544	false
2020-02-21T06:30Z	0.545	false
2020-02-21T06:15Z	0.546	false
2020-02-21T06:00Z	0.547	false
2020-02-21T05:45Z	0.548	false
2020-02-21T05:30Z	0.548	false
2020-02-21T05:15Z	0.549	false
2020-02-21T05:00Z	0.549	false
2020-02-21T04:45Z	0.55	false
2020-02-21T04:30Z	0.551	false
2020-02-21T04:15Z	0.552	false
2020-02-21T04:00Z	0.553	false
2020-02-21T03:45Z	0.554	false
2020-02-21T03:30Z	0.555	false
2020-02-21T03:15Z	0.557	false
2020-02-21T03:00Z	0.557	false
2020-02-21T02:45Z	0.558	false
2020-02-21T02:30Z	0.559	false
2020-02-21T02:15Z	0.561	false
2020-02-21T02:00Z	0.561	false
2020-02-21T01:45Z	0.563	false
2020-02-21T01:30Z	0.565	false
2020-02-21T01:15Z	0.567	false
2020-02-21T01:00Z	0.568	false
2020-02-21T00:45Z	0.57	false
2020-02-21T00:30Z	0.571	false
2020-02-21T00:15Z	0.573	false
2020-02-21T00:00Z	0.575	false
2020-02-20T23:45Z	0.577	false
2020-02-20T23:30Z	0.578	false
2020-02-20T23:15Z	0.581	false
2020-02-20T23:00Z	0.584	false
2020-02-20T22:45Z	0.586	false
2020-02-20T22:30Z	0.589	false
2020-02-20T22:15Z	0.591	false
2020-02-20T22:00Z	0.595	false
2020-02-20T21:45Z	0.598	false
2020-02-20T21:30Z	0.602	false
2020-02-20T21:15Z	0.604	false
2020-02-20T21:00Z	0.608	false
2020-02-20T20:45Z	0.613	false
2020-02-20T20:30Z	0.618	false
2020-02-20T20:15Z	0.621	false
2020-02-20T20:00Z	0.627	false
2020-02-20T19:45Z	0.632	false
2020-02-20T19:30Z	0.637	false
2020-02-20T19:15Z	0.644	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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