River level River Thames at Trowlock Island

Check for flood warnings in this area

Latest recorded level 4.71m at 10:00pm Sunday 16 February 2020.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 5.00m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2020-02-16T22:00Z	4.709	false
2020-02-16T21:45Z	4.737	false
2020-02-16T21:30Z	4.77	false
2020-02-16T21:15Z	4.807	false
2020-02-16T21:00Z	4.846	false
2020-02-16T20:45Z	4.884	false
2020-02-16T20:30Z	4.917	false
2020-02-16T20:15Z	4.955	false
2020-02-16T20:00Z	4.981	false
2020-02-16T19:45Z	4.982	false
2020-02-16T19:30Z	4.966	false
2020-02-16T19:15Z	4.91	false
2020-02-16T19:00Z	4.814	false
2020-02-16T18:45Z	4.714	false
2020-02-16T18:30Z	4.62	false
2020-02-16T18:15Z	4.546	false
2020-02-16T18:00Z	4.528	false
2020-02-16T17:45Z	4.526	false
2020-02-16T17:30Z	4.528	false
2020-02-16T17:15Z	4.531	false
2020-02-16T17:00Z	4.522	false
2020-02-16T16:45Z	4.528	false
2020-02-16T16:30Z	4.53	false
2020-02-16T16:15Z	4.53	false
2020-02-16T16:00Z	4.525	false
2020-02-16T15:45Z	4.531	false
2020-02-16T15:30Z	4.527	false
2020-02-16T15:15Z	4.531	false
2020-02-16T15:00Z	4.527	false
2020-02-16T14:45Z	4.532	false
2020-02-16T14:30Z	4.532	false
2020-02-16T14:15Z	4.547	false
2020-02-16T14:00Z	4.534	false
2020-02-16T13:45Z	4.523	false
2020-02-16T13:30Z	4.53	false
2020-02-16T13:15Z	4.533	false
2020-02-16T13:00Z	4.533	false
2020-02-16T12:45Z	4.53	false
2020-02-16T12:30Z	4.533	false
2020-02-16T12:15Z	4.531	false
2020-02-16T12:00Z	4.529	false
2020-02-16T11:45Z	4.528	false
2020-02-16T11:30Z	4.523	false
2020-02-16T11:15Z	4.529	false
2020-02-16T11:00Z	4.528	false
2020-02-16T10:45Z	4.526	false
2020-02-16T10:30Z	4.528	false
2020-02-16T10:15Z	4.525	false
2020-02-16T10:00Z	4.524	false
2020-02-16T09:45Z	4.518	false
2020-02-16T09:30Z	4.519	false
2020-02-16T09:15Z	4.529	false
2020-02-16T09:00Z	4.528	false
2020-02-16T08:45Z	4.528	false
2020-02-16T08:30Z	4.53	false
2020-02-16T08:15Z	4.528	false
2020-02-16T08:00Z	4.526	false
2020-02-16T07:45Z	4.521	false
2020-02-16T07:30Z	4.525	false
2020-02-16T07:15Z	4.525	false
2020-02-16T07:00Z	4.526	false
2020-02-16T06:45Z	4.525	false
2020-02-16T06:30Z	4.522	false
2020-02-16T06:15Z	4.525	false
2020-02-16T06:00Z	4.524	false
2020-02-16T05:45Z	4.522	false
2020-02-16T05:30Z	4.522	false
2020-02-16T05:15Z	4.525	false
2020-02-16T05:00Z	4.526	false
2020-02-16T04:45Z	4.524	false
2020-02-16T04:30Z	4.525	false
2020-02-16T04:15Z	4.522	false
2020-02-16T04:00Z	4.52	false
2020-02-16T03:45Z	4.522	false
2020-02-16T03:30Z	4.515	false
2020-02-16T03:15Z	4.522	false
2020-02-16T03:00Z	4.522	false
2020-02-16T02:45Z	4.521	false
2020-02-16T02:30Z	4.522	false
2020-02-16T02:15Z	4.517	false
2020-02-16T02:00Z	4.522	false
2020-02-16T01:45Z	4.522	false
2020-02-16T01:30Z	4.522	false
2020-02-16T01:15Z	4.522	false
2020-02-16T01:00Z	4.52	false
2020-02-16T00:45Z	4.518	false
2020-02-16T00:30Z	4.522	false
2020-02-16T00:15Z	4.52	false
2020-02-16T00:00Z	4.52	false
2020-02-15T23:45Z	4.521	false
2020-02-15T23:30Z	4.518	false
2020-02-15T23:15Z	4.514	false
2020-02-15T23:00Z	4.521	false
2020-02-15T22:45Z	4.523	false
2020-02-15T22:30Z	4.52	false
2020-02-15T22:15Z	4.519	false
2020-02-15T22:00Z	4.514	false
2020-02-15T21:45Z	4.522	false
2020-02-15T21:30Z	4.522	false
2020-02-15T21:15Z	4.52	false
2020-02-15T21:00Z	4.52	false
2020-02-15T20:45Z	4.522	false
2020-02-15T20:30Z	4.52	false
2020-02-15T20:15Z	4.522	false
2020-02-15T20:00Z	4.549	false
2020-02-15T19:45Z	4.572	false
2020-02-15T19:30Z	4.583	false
2020-02-15T19:15Z	4.566	false
2020-02-15T19:00Z	4.529	false
2020-02-15T18:45Z	4.517	false
2020-02-15T18:30Z	4.521	false
2020-02-15T18:15Z	4.514	false
2020-02-15T18:00Z	4.522	false
2020-02-15T17:45Z	4.522	false
2020-02-15T17:30Z	4.524	false
2020-02-15T17:15Z	4.522	false
2020-02-15T17:00Z	4.524	false
2020-02-15T16:45Z	4.517	false
2020-02-15T16:30Z	4.515	false
2020-02-15T16:15Z	4.523	false
2020-02-15T16:00Z	4.525	false
2020-02-15T15:45Z	4.52	false
2020-02-15T15:30Z	4.522	false
2020-02-15T15:15Z	4.525	false
2020-02-15T15:00Z	4.516	false
2020-02-15T14:45Z	4.522	false
2020-02-15T14:30Z	4.523	false
2020-02-15T14:15Z	4.52	false
2020-02-15T14:00Z	4.521	false
2020-02-15T13:45Z	4.519	false
2020-02-15T13:30Z	4.524	false
2020-02-15T13:15Z	4.52	false
2020-02-15T13:00Z	4.518	false
2020-02-15T12:45Z	4.522	false
2020-02-15T12:30Z	4.52	false
2020-02-15T12:15Z	4.522	false
2020-02-15T12:00Z	4.523	false
2020-02-15T11:45Z	4.52	false
2020-02-15T11:30Z	4.525	false
2020-02-15T11:15Z	4.522	false
2020-02-15T11:00Z	4.525	false
2020-02-15T10:45Z	4.522	false
2020-02-15T10:30Z	4.515	false
2020-02-15T10:15Z	4.525	false
2020-02-15T10:00Z	4.528	false
2020-02-15T09:45Z	4.517	false
2020-02-15T09:30Z	4.536	false
2020-02-15T09:15Z	4.568	false
2020-02-15T09:00Z	4.607	false
2020-02-15T08:45Z	4.653	false
2020-02-15T08:30Z	4.704	false
2020-02-15T08:15Z	4.758	false
2020-02-15T08:00Z	4.813	false
2020-02-15T07:45Z	4.865	false
2020-02-15T07:30Z	4.898	false
2020-02-15T07:15Z	4.889	false
2020-02-15T07:00Z	4.826	false
2020-02-15T06:45Z	4.729	false
2020-02-15T06:30Z	4.608	false
2020-02-15T06:15Z	4.52	false
2020-02-15T06:00Z	4.521	false
2020-02-15T05:45Z	4.512	false
2020-02-15T05:30Z	4.52	false
2020-02-15T05:15Z	4.518	false
2020-02-15T05:00Z	4.52	false
2020-02-15T04:45Z	4.52	false
2020-02-15T04:30Z	4.523	false
2020-02-15T04:15Z	4.522	false
2020-02-15T04:00Z	4.522	false
2020-02-15T03:45Z	4.536	false
2020-02-15T03:30Z	4.537	false
2020-02-15T03:15Z	4.533	false
2020-02-15T03:00Z	4.536	false
2020-02-15T02:45Z	4.532	false
2020-02-15T02:30Z	4.531	false
2020-02-15T02:15Z	4.539	false
2020-02-15T02:00Z	4.537	false
2020-02-15T01:45Z	4.54	false
2020-02-15T01:30Z	4.537	false
2020-02-15T01:15Z	4.533	false
2020-02-15T01:00Z	4.538	false
2020-02-15T00:45Z	4.54	false
2020-02-15T00:30Z	4.54	false
2020-02-15T00:15Z	4.546	false
2020-02-15T00:00Z	4.548	false
2020-02-14T23:45Z	4.548	false
2020-02-14T23:30Z	4.562	false
2020-02-14T23:15Z	4.564	false
2020-02-14T23:00Z	4.573	false
2020-02-14T22:45Z	4.574	false
2020-02-14T22:30Z	4.594	false
2020-02-14T22:15Z	4.629	false
2020-02-14T22:00Z	4.622	false
2020-02-14T21:45Z	4.633	false
2020-02-14T21:30Z	4.63	false
2020-02-14T21:15Z	4.636	false
2020-02-14T21:00Z	4.636	false
2020-02-14T20:45Z	4.657	false
2020-02-14T20:30Z	4.684	false
2020-02-14T20:15Z	4.715	false
2020-02-14T20:00Z	4.746	false
2020-02-14T19:45Z	4.793	false
2020-02-14T19:30Z	4.84	false
2020-02-14T19:15Z	4.877	false
2020-02-14T19:00Z	4.895	false
2020-02-14T18:45Z	4.867	false
2020-02-14T18:30Z	4.792	false
2020-02-14T18:15Z	4.7	false
2020-02-14T18:00Z	4.594	false
2020-02-14T17:45Z	4.525	false
2020-02-14T17:30Z	4.525	false
2020-02-14T17:15Z	4.517	false
2020-02-14T17:00Z	4.515	false
2020-02-14T16:45Z	4.526	false
2020-02-14T16:30Z	4.516	false
2020-02-14T16:15Z	4.524	false
2020-02-14T16:00Z	4.525	false
2020-02-14T15:45Z	4.524	false
2020-02-14T15:30Z	4.525	false
2020-02-14T15:15Z	4.526	false
2020-02-14T15:00Z	4.524	false
2020-02-14T14:45Z	4.516	false
2020-02-14T14:30Z	4.527	false
2020-02-14T14:15Z	4.525	false
2020-02-14T14:00Z	4.528	false
2020-02-14T13:45Z	4.525	false
2020-02-14T13:30Z	4.53	false
2020-02-14T13:15Z	4.558	false
2020-02-14T13:00Z	4.542	false
2020-02-14T12:45Z	4.543	false
2020-02-14T12:30Z	4.534	false
2020-02-14T12:15Z	4.538	false
2020-02-14T12:00Z	4.544	false
2020-02-14T11:45Z	4.547	false
2020-02-14T11:30Z	4.544	false
2020-02-14T11:15Z	4.551	false
2020-02-14T11:00Z	4.557	false
2020-02-14T10:45Z	4.562	false
2020-02-14T10:30Z	4.554	false
2020-02-14T10:15Z	4.558	false
2020-02-14T10:00Z	4.55	false
2020-02-14T09:45Z	4.553	false
2020-02-14T09:30Z	4.565	false
2020-02-14T09:15Z	4.579	false
2020-02-14T09:00Z	4.586	false
2020-02-14T08:45Z	4.614	false
2020-02-14T08:30Z	4.631	false
2020-02-14T08:15Z	4.664	false
2020-02-14T08:00Z	4.704	false
2020-02-14T07:45Z	4.769	false
2020-02-14T07:30Z	4.824	false
2020-02-14T07:15Z	4.874	false
2020-02-14T07:00Z	4.924	false
2020-02-14T06:45Z	5.003	false
2020-02-14T06:30Z	5.064	false
2020-02-14T06:15Z	5.091	false
2020-02-14T06:00Z	5.077	false
2020-02-14T05:45Z	4.985	false
2020-02-14T05:30Z	4.844	false
2020-02-14T05:15Z	4.729	false
2020-02-14T05:00Z	4.634	false
2020-02-14T04:45Z	4.563	false
2020-02-14T04:30Z	4.527	false
2020-02-14T04:15Z	4.527	false
2020-02-14T04:00Z	4.526	false
2020-02-14T03:45Z	4.516	false
2020-02-14T03:30Z	4.517	false
2020-02-14T03:15Z	4.526	false
2020-02-14T03:00Z	4.528	false
2020-02-14T02:45Z	4.528	false
2020-02-14T02:30Z	4.526	false
2020-02-14T02:15Z	4.527	false
2020-02-14T02:00Z	4.527	false
2020-02-14T01:45Z	4.524	false
2020-02-14T01:30Z	4.519	false
2020-02-14T01:15Z	4.519	false
2020-02-14T01:00Z	4.528	false
2020-02-14T00:45Z	4.52	false
2020-02-14T00:30Z	4.523	false
2020-02-14T00:15Z	4.532	false
2020-02-14T00:00Z	4.531	false
2020-02-13T23:45Z	4.533	false
2020-02-13T23:30Z	4.534	false
2020-02-13T23:15Z	4.534	false
2020-02-13T23:00Z	4.526	false
2020-02-13T22:45Z	4.53	false
2020-02-13T22:30Z	4.544	false
2020-02-13T22:15Z	4.553	false
2020-02-13T22:00Z	4.568	false
2020-02-13T21:45Z	4.584	false
2020-02-13T21:30Z	4.613	false
2020-02-13T21:15Z	4.622	false
2020-02-13T21:00Z	4.631	false
2020-02-13T20:45Z	4.642	false
2020-02-13T20:30Z	4.649	false
2020-02-13T20:15Z	4.68	false
2020-02-13T20:00Z	4.718	false
2020-02-13T19:45Z	4.775	false
2020-02-13T19:30Z	4.826	false
2020-02-13T19:15Z	4.872	false
2020-02-13T19:00Z	4.93	false
2020-02-13T18:45Z	5.01	false
2020-02-13T18:30Z	5.083	false
2020-02-13T18:15Z	5.106	false
2020-02-13T18:00Z	5.06	false
2020-02-13T17:45Z	4.934	false
2020-02-13T17:30Z	4.785	false
2020-02-13T17:15Z	4.63	false
2020-02-13T17:00Z	4.544	false
2020-02-13T16:45Z	4.538	false
2020-02-13T16:30Z	4.536	false
2020-02-13T16:15Z	4.537	false
2020-02-13T16:00Z	4.541	false
2020-02-13T15:45Z	4.539	false
2020-02-13T15:30Z	4.536	false
2020-02-13T15:15Z	4.538	false
2020-02-13T15:00Z	4.534	false
2020-02-13T14:45Z	4.534	false
2020-02-13T14:30Z	4.523	false
2020-02-13T14:15Z	4.533	false
2020-02-13T14:00Z	4.526	false
2020-02-13T13:45Z	4.534	false
2020-02-13T13:30Z	4.534	false
2020-02-13T13:15Z	4.533	false
2020-02-13T13:00Z	4.532	false
2020-02-13T12:45Z	4.53	false
2020-02-13T12:30Z	4.536	false
2020-02-13T12:15Z	4.531	false
2020-02-13T12:00Z	4.538	false
2020-02-13T11:45Z	4.538	false
2020-02-13T11:30Z	4.539	false
2020-02-13T11:15Z	4.539	false
2020-02-13T11:00Z	4.54	false
2020-02-13T10:45Z	4.532	false
2020-02-13T10:30Z	4.56	false
2020-02-13T10:15Z	4.566	false
2020-02-13T10:00Z	4.566	false
2020-02-13T09:45Z	4.567	false
2020-02-13T09:30Z	4.571	false
2020-02-13T09:15Z	4.576	false
2020-02-13T09:00Z	4.572	false
2020-02-13T08:45Z	4.587	false
2020-02-13T08:30Z	4.591	false
2020-02-13T08:15Z	4.603	false
2020-02-13T08:00Z	4.618	false
2020-02-13T07:45Z	4.637	false
2020-02-13T07:30Z	4.651	false
2020-02-13T07:15Z	4.685	false
2020-02-13T07:00Z	4.74	false
2020-02-13T06:45Z	4.806	false
2020-02-13T06:30Z	4.853	false
2020-02-13T06:15Z	4.915	false
2020-02-13T06:00Z	4.979	false
2020-02-13T05:45Z	5.031	false
2020-02-13T05:30Z	5.028	false
2020-02-13T05:15Z	4.954	false
2020-02-13T05:00Z	4.803	false
2020-02-13T04:45Z	4.67	false
2020-02-13T04:30Z	4.582	false
2020-02-13T04:15Z	4.534	false
2020-02-13T04:00Z	4.533	false
2020-02-13T03:45Z	4.531	false
2020-02-13T03:30Z	4.531	false
2020-02-13T03:15Z	4.525	false
2020-02-13T03:00Z	4.533	false
2020-02-13T02:45Z	4.529	false
2020-02-13T02:30Z	4.531	false
2020-02-13T02:15Z	4.532	false
2020-02-13T02:00Z	4.532	false
2020-02-13T01:45Z	4.538	false
2020-02-13T01:30Z	4.538	false
2020-02-13T01:15Z	4.538	false
2020-02-13T01:00Z	4.531	false
2020-02-13T00:45Z	4.534	false
2020-02-13T00:30Z	4.545	false
2020-02-13T00:15Z	4.545	false
2020-02-13T00:00Z	4.546	false
2020-02-12T23:45Z	4.551	false
2020-02-12T23:30Z	4.54	false
2020-02-12T23:15Z	4.553	false
2020-02-12T23:00Z	4.553	false
2020-02-12T22:45Z	4.555	false
2020-02-12T22:30Z	4.556	false
2020-02-12T22:15Z	4.555	false
2020-02-12T22:00Z	4.561	false
2020-02-12T21:45Z	4.554	false
2020-02-12T21:30Z	4.555	false
2020-02-12T21:15Z	4.571	false
2020-02-12T21:00Z	4.576	false
2020-02-12T20:45Z	4.587	false
2020-02-12T20:30Z	4.598	false
2020-02-12T20:15Z	4.61	false
2020-02-12T20:00Z	4.629	false
2020-02-12T19:45Z	4.637	false
2020-02-12T19:30Z	4.665	false
2020-02-12T19:15Z	4.699	false
2020-02-12T19:00Z	4.759	false
2020-02-12T18:45Z	4.813	false
2020-02-12T18:30Z	4.863	false
2020-02-12T18:15Z	4.92	false
2020-02-12T18:00Z	5.011	false
2020-02-12T17:45Z	5.11	false
2020-02-12T17:30Z	5.169	false
2020-02-12T17:15Z	5.157	false
2020-02-12T17:00Z	5.098	false
2020-02-12T16:45Z	4.942	false
2020-02-12T16:30Z	4.729	false
2020-02-12T16:15Z	4.544	false
2020-02-12T16:00Z	4.508	false
2020-02-12T15:45Z	4.512	false
2020-02-12T15:30Z	4.509	false
2020-02-12T15:15Z	4.512	false
2020-02-12T15:00Z	4.513	false
2020-02-12T14:45Z	4.513	false
2020-02-12T14:30Z	4.513	false
2020-02-12T14:15Z	4.513	false
2020-02-12T14:00Z	4.514	false
2020-02-12T13:45Z	4.513	false
2020-02-12T13:30Z	4.515	false
2020-02-12T13:15Z	4.511	false
2020-02-12T13:00Z	4.513	false
2020-02-12T12:45Z	4.516	false
2020-02-12T12:30Z	4.514	false
2020-02-12T12:15Z	4.504	false
2020-02-12T12:00Z	4.505	false
2020-02-12T11:45Z	4.516	false
2020-02-12T11:30Z	4.515	false
2020-02-12T11:15Z	4.509	false
2020-02-12T11:00Z	4.517	false
2020-02-12T10:45Z	4.519	false
2020-02-12T10:30Z	4.516	false
2020-02-12T10:15Z	4.517	false
2020-02-12T10:00Z	4.517	false
2020-02-12T09:45Z	4.519	false
2020-02-12T09:30Z	4.518	false
2020-02-12T09:15Z	4.514	false
2020-02-12T09:00Z	4.517	false
2020-02-12T08:45Z	4.522	false
2020-02-12T08:30Z	4.516	false
2020-02-12T08:15Z	4.519	false
2020-02-12T08:00Z	4.523	false
2020-02-12T07:45Z	4.521	false
2020-02-12T07:30Z	4.532	false
2020-02-12T07:15Z	4.543	false
2020-02-12T07:00Z	4.565	false
2020-02-12T06:45Z	4.591	false
2020-02-12T06:30Z	4.613	false
2020-02-12T06:15Z	4.652	false
2020-02-12T06:00Z	4.71	false
2020-02-12T05:45Z	4.773	false
2020-02-12T05:30Z	4.84	false
2020-02-12T05:15Z	4.896	false
2020-02-12T05:00Z	4.95	false
2020-02-12T04:45Z	4.967	false
2020-02-12T04:30Z	4.901	false
2020-02-12T04:15Z	4.79	false
2020-02-12T04:00Z	4.677	false
2020-02-12T03:45Z	4.599	false
2020-02-12T03:30Z	4.545	false
2020-02-12T03:15Z	4.52	false
2020-02-12T03:00Z	4.512	false
2020-02-12T02:45Z	4.51	false
2020-02-12T02:30Z	4.511	false
2020-02-12T02:15Z	4.512	false
2020-02-12T02:00Z	4.514	false
2020-02-12T01:45Z	4.515	false
2020-02-12T01:30Z	4.508	false
2020-02-12T01:15Z	4.513	false
2020-02-12T01:00Z	4.517	false
2020-02-12T00:45Z	4.51	false
2020-02-12T00:30Z	4.514	false
2020-02-12T00:15Z	4.521	false
2020-02-12T00:00Z	4.526	false
2020-02-11T23:45Z	4.528	false
2020-02-11T23:30Z	4.524	false
2020-02-11T23:15Z	4.524	false
2020-02-11T23:00Z	4.52	false
2020-02-11T22:45Z	4.512	false
2020-02-11T22:30Z	4.518	false
2020-02-11T22:15Z	4.518	false
2020-02-11T22:00Z	4.516	false
2020-02-11T21:45Z	4.515	false
2020-02-11T21:30Z	4.512	false
2020-02-11T21:15Z	4.513	false
2020-02-11T21:00Z	4.511	false
2020-02-11T20:45Z	4.501	false
2020-02-11T20:30Z	4.509	false
2020-02-11T20:15Z	4.501	false
2020-02-11T20:00Z	4.51	false
2020-02-11T19:45Z	4.512	false
2020-02-11T19:30Z	4.512	false
2020-02-11T19:15Z	4.508	false
2020-02-11T19:00Z	4.5	false
2020-02-11T18:45Z	4.509	false
2020-02-11T18:30Z	4.509	false
2020-02-11T18:15Z	4.499	false
2020-02-11T18:00Z	4.504	false
2020-02-11T17:45Z	4.51	false
2020-02-11T17:30Z	4.506	false
2020-02-11T17:15Z	4.51	false
2020-02-11T17:00Z	4.502	false
2020-02-11T16:45Z	4.511	false
2020-02-11T16:30Z	4.512	false
2020-02-11T16:15Z	4.51	false
2020-02-11T16:00Z	4.51	false
2020-02-11T15:45Z	4.509	false
2020-02-11T15:30Z	4.512	false
2020-02-11T15:15Z	4.512	false
2020-02-11T15:00Z	4.506	false
2020-02-11T14:45Z	4.512	false
2020-02-11T14:30Z	4.519	false
2020-02-11T14:15Z	4.519	false
2020-02-11T14:00Z	4.522	false
2020-02-11T13:45Z	4.528	false
2020-02-11T13:30Z	4.538	false
2020-02-11T13:15Z	4.547	false
2020-02-11T13:00Z	4.575	false
2020-02-11T12:45Z	4.58	false
2020-02-11T12:30Z	4.569	false
2020-02-11T12:15Z	4.583	false
2020-02-11T12:00Z	4.576	false
2020-02-11T11:45Z	4.575	false
2020-02-11T11:30Z	4.571	false
2020-02-11T11:15Z	4.571	false
2020-02-11T11:00Z	4.565	false
2020-02-11T10:45Z	4.575	false
2020-02-11T10:30Z	4.571	false
2020-02-11T10:15Z	4.563	false
2020-02-11T10:00Z	4.569	false
2020-02-11T09:45Z	4.562	false
2020-02-11T09:30Z	4.565	false
2020-02-11T09:15Z	4.567	false
2020-02-11T09:00Z	4.566	false
2020-02-11T08:45Z	4.558	false
2020-02-11T08:30Z	4.563	false
2020-02-11T08:15Z	4.564	false
2020-02-11T08:00Z	4.554	false
2020-02-11T07:45Z	4.559	false
2020-02-11T07:30Z	4.564	false
2020-02-11T07:15Z	4.565	false
2020-02-11T07:00Z	4.566	false
2020-02-11T06:45Z	4.566	false
2020-02-11T06:30Z	4.576	false
2020-02-11T06:15Z	4.583	false
2020-02-11T06:00Z	4.588	false

Forecast data

Key information

• Station name: Trowlock Island
• Station ID: 7269
• River name: River Thames
• Typical range: 4.42m to 5.00m
• Highest level on record: 5.58m on 07 March 2007
• Site datum: 0.00mAOD (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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