River level River Thames at Trowlock Island

Check for flood warnings in this area

Latest recorded level 4.55m at 5:30am Thursday 9 July 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
2020-07-09T04:30Z	4.55	false
2020-07-09T04:15Z	4.545	false
2020-07-09T04:00Z	4.551	false
2020-07-09T03:45Z	4.554	false
2020-07-09T03:30Z	4.549	false
2020-07-09T03:15Z	4.555	false
2020-07-09T03:00Z	4.555	false
2020-07-09T02:45Z	4.559	false
2020-07-09T02:30Z	4.554	false
2020-07-09T02:15Z	4.556	false
2020-07-09T02:00Z	4.572	false
2020-07-09T01:45Z	4.575	false
2020-07-09T01:30Z	4.577	false
2020-07-09T01:15Z	4.424	false
2020-07-09T01:00Z	4.435	false
2020-07-09T00:45Z	4.429	false
2020-07-09T00:30Z	4.435	false
2020-07-09T00:15Z	4.437	false
2020-07-09T00:00Z	4.44	false
2020-07-08T23:45Z	4.435	false
2020-07-08T23:30Z	4.425	false
2020-07-08T23:15Z	4.428	false
2020-07-08T23:00Z	4.43	false
2020-07-08T22:45Z	4.438	false
2020-07-08T22:30Z	4.431	false
2020-07-08T22:15Z	4.422	false
2020-07-08T22:00Z	4.431	false
2020-07-08T21:45Z	4.438	false
2020-07-08T21:30Z	4.426	false
2020-07-08T21:15Z	4.433	false
2020-07-08T21:00Z	4.438	false
2020-07-08T20:45Z	4.438	false
2020-07-08T20:30Z	4.433	false
2020-07-08T20:15Z	4.433	false
2020-07-08T20:00Z	4.442	false
2020-07-08T19:45Z	4.437	false
2020-07-08T19:30Z	4.435	false
2020-07-08T19:15Z	4.44	false
2020-07-08T19:00Z	4.443	false
2020-07-08T18:45Z	4.428	false
2020-07-08T18:30Z	4.439	false
2020-07-08T18:15Z	4.449	false
2020-07-08T18:00Z	4.442	false
2020-07-08T17:45Z	4.432	false
2020-07-08T17:30Z	4.444	false
2020-07-08T17:15Z	4.441	false
2020-07-08T17:00Z	4.434	false
2020-07-08T16:45Z	4.436	false
2020-07-08T16:30Z	4.429	false
2020-07-08T16:15Z	4.443	false
2020-07-08T16:00Z	4.441	false
2020-07-08T15:45Z	4.426	false
2020-07-08T15:30Z	4.442	false
2020-07-08T15:15Z	4.424	false
2020-07-08T15:00Z	4.442	false
2020-07-08T14:45Z	4.437	false
2020-07-08T14:30Z	4.45	false
2020-07-08T14:15Z	4.43	false
2020-07-08T14:00Z	4.443	false
2020-07-08T13:45Z	4.447	false
2020-07-08T13:30Z	4.443	false
2020-07-08T13:15Z	4.438	false
2020-07-08T13:00Z	4.448	false
2020-07-08T12:45Z	4.443	false
2020-07-08T12:30Z	4.438	false
2020-07-08T12:15Z	4.44	false
2020-07-08T12:00Z	4.43	false
2020-07-08T11:45Z	4.44	false
2020-07-08T11:30Z	4.427	false
2020-07-08T11:15Z	4.432	false
2020-07-08T11:00Z	4.436	false
2020-07-08T10:45Z	4.43	false
2020-07-08T10:30Z	4.441	false
2020-07-08T10:15Z	4.433	false
2020-07-08T10:00Z	4.436	false
2020-07-08T09:45Z	4.436	false
2020-07-08T09:30Z	4.424	false
2020-07-08T09:15Z	4.428	false
2020-07-08T09:00Z	4.436	false
2020-07-08T08:45Z	4.433	false
2020-07-08T08:30Z	4.438	false
2020-07-08T08:15Z	4.44	false
2020-07-08T08:00Z	4.412	false
2020-07-08T07:45Z	4.434	false
2020-07-08T07:30Z	4.424	false
2020-07-08T07:15Z	4.434	false
2020-07-08T07:00Z	4.422	false
2020-07-08T06:45Z	4.419	false
2020-07-08T06:30Z	4.429	false
2020-07-08T06:15Z	4.418	false
2020-07-08T06:00Z	4.432	false
2020-07-08T05:45Z	4.434	false
2020-07-08T05:30Z	4.432	false
2020-07-08T05:15Z	4.423	false
2020-07-08T05:00Z	4.426	false
2020-07-08T04:45Z	4.428	false
2020-07-08T04:30Z	4.417	false
2020-07-08T04:15Z	4.419	false
2020-07-08T04:00Z	4.416	false
2020-07-08T03:45Z	4.416	false
2020-07-08T03:30Z	4.425	false
2020-07-08T03:15Z	4.423	false
2020-07-08T03:00Z	4.428	false
2020-07-08T02:45Z	4.424	false
2020-07-08T02:30Z	4.428	false
2020-07-08T02:15Z	4.423	false
2020-07-08T02:00Z	4.428	false
2020-07-08T01:45Z	4.429	false
2020-07-08T01:30Z	4.436	false
2020-07-08T01:15Z	4.433	false
2020-07-08T01:00Z	4.434	false
2020-07-08T00:45Z	4.443	false
2020-07-08T00:30Z	4.435	false
2020-07-08T00:15Z	4.434	false
2020-07-08T00:00Z	4.443	false
2020-07-07T23:45Z	4.45	false
2020-07-07T23:30Z	4.444	false
2020-07-07T23:15Z	4.451	false
2020-07-07T23:00Z	4.454	false
2020-07-07T22:45Z	4.441	false
2020-07-07T22:30Z	4.459	false
2020-07-07T22:15Z	4.449	false
2020-07-07T22:00Z	4.446	false
2020-07-07T21:45Z	4.451	false
2020-07-07T21:30Z	4.458	false
2020-07-07T21:15Z	4.452	false
2020-07-07T21:00Z	4.466	false
2020-07-07T20:45Z	4.467	false
2020-07-07T20:30Z	4.463	false
2020-07-07T20:15Z	4.46	false
2020-07-07T20:00Z	4.456	false
2020-07-07T19:45Z	4.469	false
2020-07-07T19:30Z	4.463	false
2020-07-07T19:15Z	4.465	false
2020-07-07T19:00Z	4.468	false
2020-07-07T18:45Z	4.469	false
2020-07-07T18:30Z	4.46	false
2020-07-07T18:15Z	4.467	false
2020-07-07T18:00Z	4.47	false
2020-07-07T17:45Z	4.457	false
2020-07-07T17:30Z	4.459	false
2020-07-07T17:15Z	4.469	false
2020-07-07T17:00Z	4.472	false
2020-07-07T16:45Z	4.462	false
2020-07-07T16:30Z	4.449	false
2020-07-07T16:15Z	4.462	false
2020-07-07T16:00Z	4.46	false
2020-07-07T15:45Z	4.468	false
2020-07-07T15:30Z	4.468	false
2020-07-07T15:15Z	4.475	false
2020-07-07T15:00Z	4.47	false
2020-07-07T14:45Z	4.466	false
2020-07-07T14:30Z	4.477	false
2020-07-07T14:15Z	4.501	false
2020-07-07T14:00Z	4.481	false
2020-07-07T13:45Z	4.473	false
2020-07-07T13:30Z	4.491	false
2020-07-07T13:15Z	4.482	false
2020-07-07T13:00Z	4.488	false
2020-07-07T12:45Z	4.486	false
2020-07-07T12:30Z	4.484	false
2020-07-07T12:15Z	4.486	false
2020-07-07T12:00Z	4.496	false
2020-07-07T11:45Z	4.497	false
2020-07-07T11:30Z	4.499	false
2020-07-07T11:15Z	4.497	false
2020-07-07T11:00Z	4.502	false
2020-07-07T10:45Z	4.488	false
2020-07-07T10:30Z	4.501	false
2020-07-07T10:15Z	4.5	false
2020-07-07T10:00Z	4.507	false
2020-07-07T09:45Z	4.486	false
2020-07-07T09:30Z	4.494	false
2020-07-07T09:15Z	4.495	false
2020-07-07T09:00Z	4.504	false
2020-07-07T08:45Z	4.509	false
2020-07-07T08:30Z	4.495	false
2020-07-07T08:15Z	4.51	false
2020-07-07T08:00Z	4.514	false
2020-07-07T07:45Z	4.505	false
2020-07-07T07:30Z	4.494	false
2020-07-07T07:15Z	4.512	false
2020-07-07T07:00Z	4.506	false
2020-07-07T06:45Z	4.513	false
2020-07-07T06:30Z	4.515	false
2020-07-07T06:15Z	4.514	false
2020-07-07T06:00Z	4.518	false
2020-07-07T05:45Z	4.524	false
2020-07-07T05:30Z	4.516	false
2020-07-07T05:15Z	4.512	false
2020-07-07T05:00Z	4.516	false
2020-07-07T04:45Z	4.52	false
2020-07-07T04:30Z	4.53	false
2020-07-07T04:15Z	4.531	false
2020-07-07T04:00Z	4.524	false
2020-07-07T03:45Z	4.522	false
2020-07-07T03:30Z	4.525	false
2020-07-07T03:15Z	4.528	false
2020-07-07T03:00Z	4.52	false
2020-07-07T02:45Z	4.53	false
2020-07-07T02:30Z	4.514	false
2020-07-07T02:15Z	4.534	false
2020-07-07T02:00Z	4.521	false
2020-07-07T01:45Z	4.522	false
2020-07-07T01:30Z	4.536	false
2020-07-07T01:15Z	4.536	false
2020-07-07T01:00Z	4.528	false
2020-07-07T00:45Z	4.525	false
2020-07-07T00:30Z	4.539	false
2020-07-07T00:15Z	4.54	false
2020-07-07T00:00Z	4.54	false
2020-07-06T23:45Z	4.53	false
2020-07-06T23:30Z	4.532	false
2020-07-06T23:15Z	4.536	false
2020-07-06T23:00Z	4.527	false
2020-07-06T22:45Z	4.533	false
2020-07-06T22:30Z	4.534	false
2020-07-06T22:15Z	4.546	false
2020-07-06T22:00Z	4.54	false
2020-07-06T21:45Z	4.541	false
2020-07-06T21:30Z	4.546	false
2020-07-06T21:15Z	4.542	false
2020-07-06T21:00Z	4.54	false
2020-07-06T20:45Z	4.536	false
2020-07-06T20:30Z	4.55	false
2020-07-06T20:15Z	4.544	false
2020-07-06T20:00Z	4.535	false
2020-07-06T19:45Z	4.533	false
2020-07-06T19:30Z	4.535	false
2020-07-06T19:15Z	4.539	false
2020-07-06T19:00Z	4.54	false
2020-07-06T18:45Z	4.536	false
2020-07-06T18:30Z	4.527	false
2020-07-06T18:15Z	4.547	false
2020-07-06T18:00Z	4.536	false
2020-07-06T17:45Z	4.529	false
2020-07-06T17:30Z	4.541	false
2020-07-06T17:15Z	4.535	false
2020-07-06T17:00Z	4.536	false
2020-07-06T16:45Z	4.544	false
2020-07-06T16:30Z	4.544	false
2020-07-06T16:15Z	4.551	false
2020-07-06T16:00Z	4.532	false
2020-07-06T15:45Z	4.538	false
2020-07-06T15:30Z	4.546	false
2020-07-06T15:15Z	4.535	false
2020-07-06T15:00Z	4.529	false
2020-07-06T14:45Z	4.522	false
2020-07-06T14:30Z	4.531	false
2020-07-06T14:15Z	4.524	false
2020-07-06T14:00Z	4.53	false
2020-07-06T13:45Z	4.533	false
2020-07-06T13:30Z	4.527	false
2020-07-06T13:15Z	4.53	false
2020-07-06T13:00Z	4.509	false
2020-07-06T12:45Z	4.525	false
2020-07-06T12:30Z	4.539	false
2020-07-06T12:15Z	4.529	false
2020-07-06T12:00Z	4.528	false
2020-07-06T11:45Z	4.525	false
2020-07-06T11:30Z	4.525	false
2020-07-06T11:15Z	4.508	false
2020-07-06T11:00Z	4.509	false
2020-07-06T10:45Z	4.519	false
2020-07-06T10:30Z	4.519	false
2020-07-06T10:15Z	4.51	false
2020-07-06T10:00Z	4.513	false
2020-07-06T09:45Z	4.513	false
2020-07-06T09:30Z	4.518	false
2020-07-06T09:15Z	4.501	false
2020-07-06T09:00Z	4.511	false
2020-07-06T08:45Z	4.493	false
2020-07-06T08:30Z	4.504	false
2020-07-06T08:15Z	4.504	false
2020-07-06T08:00Z	4.49	false
2020-07-06T07:45Z	4.499	false
2020-07-06T07:30Z	4.489	false
2020-07-06T07:15Z	4.487	false
2020-07-06T07:00Z	4.484	false
2020-07-06T06:45Z	4.484	false
2020-07-06T06:30Z	4.485	false
2020-07-06T06:15Z	4.487	false
2020-07-06T06:00Z	4.489	false
2020-07-06T05:45Z	4.498	false
2020-07-06T05:30Z	4.498	false
2020-07-06T05:15Z	4.499	false
2020-07-06T05:00Z	4.499	false
2020-07-06T04:45Z	4.483	false
2020-07-06T04:30Z	4.481	false
2020-07-06T04:15Z	4.498	false
2020-07-06T04:00Z	4.495	false
2020-07-06T03:45Z	4.491	false
2020-07-06T03:30Z	4.481	false
2020-07-06T03:15Z	4.489	false
2020-07-06T03:00Z	4.481	false
2020-07-06T02:45Z	4.489	false
2020-07-06T02:30Z	4.484	false
2020-07-06T02:15Z	4.488	false
2020-07-06T02:00Z	4.485	false
2020-07-06T01:45Z	4.494	false
2020-07-06T01:30Z	4.494	false
2020-07-06T01:15Z	4.487	false
2020-07-06T01:00Z	4.485	false
2020-07-06T00:45Z	4.495	false
2020-07-06T00:30Z	4.498	false
2020-07-06T00:15Z	4.497	false
2020-07-06T00:00Z	4.485	false
2020-07-05T23:45Z	4.499	false
2020-07-05T23:30Z	4.501	false
2020-07-05T23:15Z	4.5	false
2020-07-05T23:00Z	4.496	false
2020-07-05T22:45Z	4.501	false
2020-07-05T22:30Z	4.498	false
2020-07-05T22:15Z	4.5	false
2020-07-05T22:00Z	4.498	false
2020-07-05T21:45Z	4.492	false
2020-07-05T21:30Z	4.502	false
2020-07-05T21:15Z	4.508	false
2020-07-05T21:00Z	4.5	false
2020-07-05T20:45Z	4.5	false
2020-07-05T20:30Z	4.497	false
2020-07-05T20:15Z	4.5	false
2020-07-05T20:00Z	4.495	false
2020-07-05T19:45Z	4.5	false
2020-07-05T19:30Z	4.51	false
2020-07-05T19:15Z	4.481	false
2020-07-05T19:00Z	4.492	false
2020-07-05T18:45Z	4.486	false
2020-07-05T18:30Z	4.497	false
2020-07-05T18:15Z	4.49	false
2020-07-05T18:00Z	4.491	false
2020-07-05T17:45Z	4.478	false
2020-07-05T17:30Z	4.508	false
2020-07-05T17:15Z	4.49	false
2020-07-05T17:00Z	4.495	false
2020-07-05T16:45Z	4.494	false
2020-07-05T16:30Z	4.486	false
2020-07-05T16:15Z	4.51	false
2020-07-05T16:00Z	4.495	false
2020-07-05T15:45Z	4.495	false
2020-07-05T15:30Z	4.494	false
2020-07-05T15:15Z	4.488	false
2020-07-05T15:00Z	4.498	false
2020-07-05T14:45Z	4.48	false
2020-07-05T14:30Z	4.498	false
2020-07-05T14:15Z	4.483	false
2020-07-05T14:00Z	4.492	false
2020-07-05T13:45Z	4.487	false
2020-07-05T13:30Z	4.494	false
2020-07-05T13:15Z	4.48	false
2020-07-05T13:00Z	4.493	false
2020-07-05T12:45Z	4.493	false
2020-07-05T12:30Z	4.499	false
2020-07-05T12:15Z	4.489	false
2020-07-05T12:00Z	4.481	false
2020-07-05T11:45Z	4.479	false
2020-07-05T11:30Z	4.476	false
2020-07-05T11:15Z	4.497	false
2020-07-05T11:00Z	4.49	false
2020-07-05T10:45Z	4.478	false
2020-07-05T10:30Z	4.491	false
2020-07-05T10:15Z	4.487	false
2020-07-05T10:00Z	4.479	false
2020-07-05T09:45Z	4.466	false
2020-07-05T09:30Z	4.484	false
2020-07-05T09:15Z	4.502	false
2020-07-05T09:00Z	4.483	false
2020-07-05T08:45Z	4.481	false
2020-07-05T08:30Z	4.497	false
2020-07-05T08:15Z	4.488	false
2020-07-05T08:00Z	4.487	false
2020-07-05T07:45Z	4.489	false
2020-07-05T07:30Z	4.485	false
2020-07-05T07:15Z	4.483	false
2020-07-05T07:00Z	4.481	false
2020-07-05T06:45Z	4.479	false
2020-07-05T06:30Z	4.471	false
2020-07-05T06:15Z	4.482	false
2020-07-05T06:00Z	4.485	false
2020-07-05T05:45Z	4.483	false
2020-07-05T05:30Z	4.485	false
2020-07-05T05:15Z	4.479	false
2020-07-05T05:00Z	4.471	false
2020-07-05T04:45Z	4.488	false
2020-07-05T04:30Z	4.473	false
2020-07-05T04:15Z	4.489	false
2020-07-05T04:00Z	4.479	false
2020-07-05T03:45Z	4.483	false
2020-07-05T03:30Z	4.481	false
2020-07-05T03:15Z	4.487	false
2020-07-05T03:00Z	4.494	false
2020-07-05T02:45Z	4.493	false
2020-07-05T02:30Z	4.477	false
2020-07-05T02:15Z	4.494	false
2020-07-05T02:00Z	4.488	false
2020-07-05T01:45Z	4.495	false
2020-07-05T01:30Z	4.488	false
2020-07-05T01:15Z	4.5	false
2020-07-05T01:00Z	4.502	false
2020-07-05T00:45Z	4.49	false
2020-07-05T00:30Z	4.496	false
2020-07-05T00:15Z	4.494	false
2020-07-05T00:00Z	4.512	false
2020-07-04T23:45Z	4.514	false
2020-07-04T23:30Z	4.515	false
2020-07-04T23:15Z	4.502	false
2020-07-04T23:00Z	4.512	false
2020-07-04T22:45Z	4.515	false
2020-07-04T22:30Z	4.518	false
2020-07-04T22:15Z	4.522	false
2020-07-04T22:00Z	4.522	false
2020-07-04T21:45Z	4.522	false
2020-07-04T21:30Z	4.525	false
2020-07-04T21:15Z	4.522	false
2020-07-04T21:00Z	4.515	false
2020-07-04T20:45Z	4.523	false
2020-07-04T20:30Z	4.528	false
2020-07-04T20:15Z	4.521	false
2020-07-04T20:00Z	4.51	false
2020-07-04T19:45Z	4.518	false
2020-07-04T19:30Z	4.527	false
2020-07-04T19:15Z	4.523	false
2020-07-04T19:00Z	4.519	false
2020-07-04T18:45Z	4.524	false
2020-07-04T18:30Z	4.533	false
2020-07-04T18:15Z	4.533	false
2020-07-04T18:00Z	4.523	false
2020-07-04T17:45Z	4.523	false
2020-07-04T17:30Z	4.518	false
2020-07-04T17:15Z	4.542	false
2020-07-04T17:00Z	4.53	false
2020-07-04T16:45Z	4.535	false
2020-07-04T16:30Z	4.541	false
2020-07-04T16:15Z	4.541	false
2020-07-04T16:00Z	4.536	false
2020-07-04T15:45Z	4.54	false
2020-07-04T15:30Z	4.554	false
2020-07-04T15:15Z	4.539	false
2020-07-04T15:00Z	4.545	false
2020-07-04T14:45Z	4.546	false
2020-07-04T14:30Z	4.549	false
2020-07-04T14:15Z	4.558	false
2020-07-04T14:00Z	4.398	false
2020-07-04T13:45Z	4.41	false
2020-07-04T13:30Z	4.396	false
2020-07-04T13:15Z	4.41	false
2020-07-04T13:00Z	4.397	false
2020-07-04T12:45Z	4.411	false
2020-07-04T12:30Z	4.409	false
2020-07-04T12:15Z	4.409	false
2020-07-04T12:00Z	4.4	false
2020-07-04T11:45Z	4.412	false
2020-07-04T11:30Z	4.405	false
2020-07-04T11:15Z	4.392	false
2020-07-04T11:00Z	4.409	false
2020-07-04T10:45Z	4.415	false
2020-07-04T10:30Z	4.411	false
2020-07-04T10:15Z	4.398	false
2020-07-04T10:00Z	4.402	false
2020-07-04T09:45Z	4.395	false
2020-07-04T09:30Z	4.395	false
2020-07-04T09:15Z	4.407	false
2020-07-04T09:00Z	4.414	false
2020-07-04T08:45Z	4.407	false
2020-07-04T08:30Z	4.41	false
2020-07-04T08:15Z	4.409	false
2020-07-04T08:00Z	4.396	false
2020-07-04T07:45Z	4.413	false
2020-07-04T07:30Z	4.398	false
2020-07-04T07:15Z	4.41	false
2020-07-04T07:00Z	4.415	false
2020-07-04T06:45Z	4.417	false
2020-07-04T06:30Z	4.411	false
2020-07-04T06:15Z	4.405	false
2020-07-04T06:00Z	4.411	false
2020-07-04T05:45Z	4.41	false
2020-07-04T05:30Z	4.42	false
2020-07-04T05:15Z	4.42	false
2020-07-04T05:00Z	4.414	false
2020-07-04T04:45Z	4.422	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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