River level River Thames at Trowlock Island

Check for flood warnings in this area

Latest recorded level 4.48m at 4:30am Wednesday 22 January 2020.

River levels at this location in the last 5 days

Now
▼

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

You're missing out. A graph should be visible here.
Upgrade your browser to see and use all the features of this service.

You're missing out. A graph should be visible here.

Javascript must be enabled.

Observed data

DateTime	Value	Error
2020-01-22T04:30Z	4.483	false
2020-01-22T04:15Z	4.488	false
2020-01-22T04:00Z	4.491	false
2020-01-22T03:45Z	4.486	false
2020-01-22T03:30Z	4.497	false
2020-01-22T03:15Z	4.497	false
2020-01-22T03:00Z	4.502	false
2020-01-22T02:45Z	4.492	false
2020-01-22T02:30Z	4.501	false
2020-01-22T02:15Z	4.5	false
2020-01-22T02:00Z	4.505	false
2020-01-22T01:45Z	4.502	false
2020-01-22T01:30Z	4.503	false
2020-01-22T01:15Z	4.508	false
2020-01-22T01:00Z	4.529	false
2020-01-22T00:45Z	4.534	false
2020-01-22T00:30Z	4.522	false
2020-01-22T00:15Z	4.497	false
2020-01-22T00:00Z	4.489	false
2020-01-21T23:45Z	4.499	false
2020-01-21T23:30Z	4.497	false
2020-01-21T23:15Z	4.502	false
2020-01-21T23:00Z	4.5	false
2020-01-21T22:45Z	4.491	false
2020-01-21T22:30Z	4.501	false
2020-01-21T22:15Z	4.5	false
2020-01-21T22:00Z	4.502	false
2020-01-21T21:45Z	4.503	false
2020-01-21T21:30Z	4.503	false
2020-01-21T21:15Z	4.5	false
2020-01-21T21:00Z	4.499	false
2020-01-21T20:45Z	4.504	false
2020-01-21T20:30Z	4.508	false
2020-01-21T20:15Z	4.539	false
2020-01-21T20:00Z	4.534	false
2020-01-21T19:45Z	4.539	false
2020-01-21T19:30Z	4.539	false
2020-01-21T19:15Z	4.535	false
2020-01-21T19:00Z	4.53	false
2020-01-21T18:45Z	4.52	false
2020-01-21T18:30Z	4.527	false
2020-01-21T18:15Z	4.527	false
2020-01-21T18:00Z	4.516	false
2020-01-21T17:45Z	4.516	false
2020-01-21T17:30Z	4.512	false
2020-01-21T17:15Z	4.502	false
2020-01-21T17:00Z	4.483	false
2020-01-21T16:45Z	4.484	false
2020-01-21T16:30Z	4.48	false
2020-01-21T16:15Z	4.479	false
2020-01-21T16:00Z	4.476	false
2020-01-21T15:45Z	4.47	false
2020-01-21T15:30Z	4.465	false
2020-01-21T15:15Z	4.468	false
2020-01-21T15:00Z	4.471	false
2020-01-21T14:45Z	4.47	false
2020-01-21T14:30Z	4.472	false
2020-01-21T14:15Z	4.47	false
2020-01-21T14:00Z	4.476	false
2020-01-21T13:45Z	4.481	false
2020-01-21T13:30Z	4.484	false
2020-01-21T13:15Z	4.485	false
2020-01-21T13:00Z	4.484	false
2020-01-21T12:45Z	4.485	false
2020-01-21T12:30Z	4.483	false
2020-01-21T12:15Z	4.483	false
2020-01-21T12:00Z	4.479	false
2020-01-21T11:45Z	4.48	false
2020-01-21T11:30Z	4.474	false
2020-01-21T11:15Z	4.476	false
2020-01-21T11:00Z	4.472	false
2020-01-21T10:45Z	4.473	false
2020-01-21T10:30Z	4.473	false
2020-01-21T10:15Z	4.465	false
2020-01-21T10:00Z	4.465	false
2020-01-21T09:45Z	4.466	false
2020-01-21T09:30Z	4.47	false
2020-01-21T09:15Z	4.472	false
2020-01-21T09:00Z	4.472	false
2020-01-21T08:45Z	4.472	false
2020-01-21T08:30Z	4.466	false
2020-01-21T08:15Z	4.473	false
2020-01-21T08:00Z	4.475	false
2020-01-21T07:45Z	4.466	false
2020-01-21T07:30Z	4.477	false
2020-01-21T07:15Z	4.478	false
2020-01-21T07:00Z	4.475	false
2020-01-21T06:45Z	4.483	false
2020-01-21T06:30Z	4.48	false
2020-01-21T06:15Z	4.482	false
2020-01-21T06:00Z	4.485	false
2020-01-21T05:45Z	4.482	false
2020-01-21T05:30Z	4.488	false
2020-01-21T05:15Z	4.485	false
2020-01-21T05:00Z	4.484	false
2020-01-21T04:45Z	4.486	false
2020-01-21T04:30Z	4.493	false
2020-01-21T04:15Z	4.494	false
2020-01-21T04:00Z	4.495	false
2020-01-21T03:45Z	4.499	false
2020-01-21T03:30Z	4.501	false
2020-01-21T03:15Z	4.502	false
2020-01-21T03:00Z	4.502	false
2020-01-21T02:45Z	4.503	false
2020-01-21T02:30Z	4.505	false
2020-01-21T02:15Z	4.503	false
2020-01-21T02:00Z	4.501	false
2020-01-21T01:45Z	4.494	false
2020-01-21T01:30Z	4.504	false
2020-01-21T01:15Z	4.509	false
2020-01-21T01:00Z	4.526	false
2020-01-21T00:45Z	4.548	false
2020-01-21T00:30Z	4.573	false
2020-01-21T00:15Z	4.578	false
2020-01-21T00:00Z	4.595	false
2020-01-20T23:45Z	4.613	false
2020-01-20T23:30Z	4.612	false
2020-01-20T23:15Z	4.594	false
2020-01-20T23:00Z	4.563	false
2020-01-20T22:45Z	4.537	false
2020-01-20T22:30Z	4.492	false
2020-01-20T22:15Z	4.5	false
2020-01-20T22:00Z	4.498	false
2020-01-20T21:45Z	4.5	false
2020-01-20T21:30Z	4.493	false
2020-01-20T21:15Z	4.499	false
2020-01-20T21:00Z	4.503	false
2020-01-20T20:45Z	4.499	false
2020-01-20T20:30Z	4.498	false
2020-01-20T20:15Z	4.5	false
2020-01-20T20:00Z	4.495	false
2020-01-20T19:45Z	4.5	false
2020-01-20T19:30Z	4.503	false
2020-01-20T19:15Z	4.503	false
2020-01-20T19:00Z	4.494	false
2020-01-20T18:45Z	4.507	false
2020-01-20T18:30Z	4.514	false
2020-01-20T18:15Z	4.516	false
2020-01-20T18:00Z	4.515	false
2020-01-20T17:45Z	4.508	false
2020-01-20T17:30Z	4.507	false
2020-01-20T17:15Z	4.503	false
2020-01-20T17:00Z	4.505	false
2020-01-20T16:45Z	4.494	false
2020-01-20T16:30Z	4.502	false
2020-01-20T16:15Z	4.489	false
2020-01-20T16:00Z	4.501	false
2020-01-20T15:45Z	4.493	false
2020-01-20T15:30Z	4.488	false
2020-01-20T15:15Z	4.496	false
2020-01-20T15:00Z	4.498	false
2020-01-20T14:45Z	4.499	false
2020-01-20T14:30Z	4.5	false
2020-01-20T14:15Z	4.501	false
2020-01-20T14:00Z	4.492	false
2020-01-20T13:45Z	4.493	false
2020-01-20T13:30Z	4.504	false
2020-01-20T13:15Z	4.502	false
2020-01-20T13:00Z	4.507	false
2020-01-20T12:45Z	4.505	false
2020-01-20T12:30Z	4.506	false
2020-01-20T12:15Z	4.504	false
2020-01-20T12:00Z	4.516	false
2020-01-20T11:45Z	4.524	false
2020-01-20T11:30Z	4.531	false
2020-01-20T11:15Z	4.529	false
2020-01-20T11:00Z	4.534	false
2020-01-20T10:45Z	4.526	false
2020-01-20T10:30Z	4.51	false
2020-01-20T10:15Z	4.505	false
2020-01-20T10:00Z	4.505	false
2020-01-20T09:45Z	4.505	false
2020-01-20T09:30Z	4.502	false
2020-01-20T09:15Z	4.505	false
2020-01-20T09:00Z	4.503	false
2020-01-20T08:45Z	4.494	false
2020-01-20T08:30Z	4.497	false
2020-01-20T08:15Z	4.505	false
2020-01-20T08:00Z	4.503	false
2020-01-20T07:45Z	4.504	false
2020-01-20T07:30Z	4.504	false
2020-01-20T07:15Z	4.504	false
2020-01-20T07:00Z	4.496	false
2020-01-20T06:45Z	4.505	false
2020-01-20T06:30Z	4.504	false
2020-01-20T06:15Z	4.5	false
2020-01-20T06:00Z	4.496	false
2020-01-20T05:45Z	4.502	false
2020-01-20T05:30Z	4.507	false
2020-01-20T05:15Z	4.504	false
2020-01-20T05:00Z	4.507	false
2020-01-20T04:45Z	4.504	false
2020-01-20T04:30Z	4.5	false
2020-01-20T04:15Z	4.506	false
2020-01-20T04:00Z	4.508	false
2020-01-20T03:45Z	4.504	false
2020-01-20T03:30Z	4.509	false
2020-01-20T03:15Z	4.508	false
2020-01-20T03:00Z	4.503	false
2020-01-20T02:45Z	4.503	false
2020-01-20T02:30Z	4.509	false
2020-01-20T02:15Z	4.503	false
2020-01-20T02:00Z	4.507	false
2020-01-20T01:45Z	4.501	false
2020-01-20T01:30Z	4.509	false
2020-01-20T01:15Z	4.511	false
2020-01-20T01:00Z	4.522	false
2020-01-20T00:45Z	4.54	false
2020-01-20T00:30Z	4.551	false
2020-01-20T00:15Z	4.565	false
2020-01-20T00:00Z	4.581	false
2020-01-19T23:45Z	4.599	false
2020-01-19T23:30Z	4.621	false
2020-01-19T23:15Z	4.639	false
2020-01-19T23:00Z	4.66	false
2020-01-19T22:45Z	4.671	false
2020-01-19T22:30Z	4.675	false
2020-01-19T22:15Z	4.657	false
2020-01-19T22:00Z	4.63	false
2020-01-19T21:45Z	4.607	false
2020-01-19T21:30Z	4.566	false
2020-01-19T21:15Z	4.537	false
2020-01-19T21:00Z	4.51	false
2020-01-19T20:45Z	4.504	false
2020-01-19T20:30Z	4.506	false
2020-01-19T20:15Z	4.499	false
2020-01-19T20:00Z	4.507	false
2020-01-19T19:45Z	4.507	false
2020-01-19T19:30Z	4.506	false
2020-01-19T19:15Z	4.506	false
2020-01-19T19:00Z	4.498	false
2020-01-19T18:45Z	4.507	false
2020-01-19T18:30Z	4.506	false
2020-01-19T18:15Z	4.508	false
2020-01-19T18:00Z	4.508	false
2020-01-19T17:45Z	4.507	false
2020-01-19T17:30Z	4.505	false
2020-01-19T17:15Z	4.508	false
2020-01-19T17:00Z	4.505	false
2020-01-19T16:45Z	4.51	false
2020-01-19T16:30Z	4.508	false
2020-01-19T16:15Z	4.508	false
2020-01-19T16:00Z	4.507	false
2020-01-19T15:45Z	4.505	false
2020-01-19T15:30Z	4.509	false
2020-01-19T15:15Z	4.51	false
2020-01-19T15:00Z	4.5	false
2020-01-19T14:45Z	4.508	false
2020-01-19T14:30Z	4.509	false
2020-01-19T14:15Z	4.51	false
2020-01-19T14:00Z	4.508	false
2020-01-19T13:45Z	4.507	false
2020-01-19T13:30Z	4.509	false
2020-01-19T13:15Z	4.509	false
2020-01-19T13:00Z	4.512	false
2020-01-19T12:45Z	4.511	false
2020-01-19T12:30Z	4.501	false
2020-01-19T12:15Z	4.51	false
2020-01-19T12:00Z	4.512	false
2020-01-19T11:45Z	4.512	false
2020-01-19T11:30Z	4.513	false
2020-01-19T11:15Z	4.521	false
2020-01-19T11:00Z	4.556	false
2020-01-19T10:45Z	4.582	false
2020-01-19T10:30Z	4.617	false
2020-01-19T10:15Z	4.639	false
2020-01-19T10:00Z	4.663	false
2020-01-19T09:45Z	4.672	false
2020-01-19T09:30Z	4.662	false
2020-01-19T09:15Z	4.636	false
2020-01-19T09:00Z	4.613	false
2020-01-19T08:45Z	4.602	false
2020-01-19T08:30Z	4.59	false
2020-01-19T08:15Z	4.563	false
2020-01-19T08:00Z	4.552	false
2020-01-19T07:45Z	4.522	false
2020-01-19T07:30Z	4.511	false
2020-01-19T07:15Z	4.502	false
2020-01-19T07:00Z	4.511	false
2020-01-19T06:45Z	4.509	false
2020-01-19T06:30Z	4.513	false
2020-01-19T06:15Z	4.502	false
2020-01-19T06:00Z	4.511	false
2020-01-19T05:45Z	4.513	false
2020-01-19T05:30Z	4.509	false
2020-01-19T05:15Z	4.514	false
2020-01-19T05:00Z	4.505	false
2020-01-19T04:45Z	4.513	false
2020-01-19T04:30Z	4.508	false
2020-01-19T04:15Z	4.504	false
2020-01-19T04:00Z	4.511	false
2020-01-19T03:45Z	4.515	false
2020-01-19T03:30Z	4.515	false
2020-01-19T03:15Z	4.504	false
2020-01-19T03:00Z	4.516	false
2020-01-19T02:45Z	4.515	false
2020-01-19T02:30Z	4.506	false
2020-01-19T02:15Z	4.515	false
2020-01-19T02:00Z	4.518	false
2020-01-19T01:45Z	4.517	false
2020-01-19T01:30Z	4.517	false
2020-01-19T01:15Z	4.521	false
2020-01-19T01:00Z	4.518	false
2020-01-19T00:45Z	4.517	false
2020-01-19T00:30Z	4.517	false
2020-01-19T00:15Z	4.526	false
2020-01-19T00:00Z	4.55	false
2020-01-18T23:45Z	4.57	false
2020-01-18T23:30Z	4.589	false
2020-01-18T23:15Z	4.617	false
2020-01-18T23:00Z	4.641	false
2020-01-18T22:45Z	4.672	false
2020-01-18T22:30Z	4.703	false
2020-01-18T22:15Z	4.734	false
2020-01-18T22:00Z	4.766	false
2020-01-18T21:45Z	4.79	false
2020-01-18T21:30Z	4.81	false
2020-01-18T21:15Z	4.827	false
2020-01-18T21:00Z	4.821	false
2020-01-18T20:45Z	4.783	false
2020-01-18T20:30Z	4.744	false
2020-01-18T20:15Z	4.689	false
2020-01-18T20:00Z	4.64	false
2020-01-18T19:45Z	4.591	false
2020-01-18T19:30Z	4.538	false
2020-01-18T19:15Z	4.519	false
2020-01-18T19:00Z	4.521	false
2020-01-18T18:45Z	4.517	false
2020-01-18T18:30Z	4.51	false
2020-01-18T18:15Z	4.519	false
2020-01-18T18:00Z	4.513	false
2020-01-18T17:45Z	4.519	false
2020-01-18T17:30Z	4.517	false
2020-01-18T17:15Z	4.52	false
2020-01-18T17:00Z	4.519	false
2020-01-18T16:45Z	4.518	false
2020-01-18T16:30Z	4.521	false
2020-01-18T16:15Z	4.52	false
2020-01-18T16:00Z	4.521	false
2020-01-18T15:45Z	4.522	false
2020-01-18T15:30Z	4.518	false
2020-01-18T15:15Z	4.522	false
2020-01-18T15:00Z	4.524	false
2020-01-18T14:45Z	4.526	false
2020-01-18T14:30Z	4.518	false
2020-01-18T14:15Z	4.519	false
2020-01-18T14:00Z	4.521	false
2020-01-18T13:45Z	4.525	false
2020-01-18T13:30Z	4.525	false
2020-01-18T13:15Z	4.514	false
2020-01-18T13:00Z	4.526	false
2020-01-18T12:45Z	4.527	false
2020-01-18T12:30Z	4.527	false
2020-01-18T12:15Z	4.533	false
2020-01-18T12:00Z	4.542	false
2020-01-18T11:45Z	4.555	false
2020-01-18T11:30Z	4.571	false
2020-01-18T11:15Z	4.586	false
2020-01-18T11:00Z	4.605	false
2020-01-18T10:45Z	4.614	false
2020-01-18T10:30Z	4.646	false
2020-01-18T10:15Z	4.675	false
2020-01-18T10:00Z	4.701	false
2020-01-18T09:45Z	4.729	false
2020-01-18T09:30Z	4.758	false
2020-01-18T09:15Z	4.787	false
2020-01-18T09:00Z	4.812	false
2020-01-18T08:45Z	4.841	false
2020-01-18T08:30Z	4.861	false
2020-01-18T08:15Z	4.877	false
2020-01-18T08:00Z	4.883	false
2020-01-18T07:45Z	4.88	false
2020-01-18T07:30Z	4.853	false
2020-01-18T07:15Z	4.839	false
2020-01-18T07:00Z	4.794	false
2020-01-18T06:45Z	4.742	false
2020-01-18T06:30Z	4.681	false
2020-01-18T06:15Z	4.618	false
2020-01-18T06:00Z	4.557	false
2020-01-18T05:45Z	4.527	false
2020-01-18T05:30Z	4.53	false
2020-01-18T05:15Z	4.52	false
2020-01-18T05:00Z	4.528	false
2020-01-18T04:45Z	4.529	false
2020-01-18T04:30Z	4.523	false
2020-01-18T04:15Z	4.53	false
2020-01-18T04:00Z	4.53	false
2020-01-18T03:45Z	4.532	false
2020-01-18T03:30Z	4.535	false
2020-01-18T03:15Z	4.533	false
2020-01-18T03:00Z	4.533	false
2020-01-18T02:45Z	4.534	false
2020-01-18T02:30Z	4.533	false
2020-01-18T02:15Z	4.523	false
2020-01-18T02:00Z	4.535	false
2020-01-18T01:45Z	4.537	false
2020-01-18T01:30Z	4.537	false
2020-01-18T01:15Z	4.536	false
2020-01-18T01:00Z	4.55	false
2020-01-18T00:45Z	4.559	false
2020-01-18T00:30Z	4.575	false
2020-01-18T00:15Z	4.584	false
2020-01-18T00:00Z	4.61	false
2020-01-17T23:45Z	4.631	false
2020-01-17T23:30Z	4.649	false
2020-01-17T23:15Z	4.682	false
2020-01-17T23:00Z	4.698	false
2020-01-17T22:45Z	4.738	false
2020-01-17T22:30Z	4.774	false
2020-01-17T22:15Z	4.812	false
2020-01-17T22:00Z	4.843	false
2020-01-17T21:45Z	4.888	false
2020-01-17T21:30Z	4.929	false
2020-01-17T21:15Z	4.973	false
2020-01-17T21:00Z	5.037	false
2020-01-17T20:45Z	5.094	false
2020-01-17T20:30Z	5.134	false
2020-01-17T20:15Z	5.16	false
2020-01-17T20:00Z	5.146	false
2020-01-17T19:45Z	5.082	false
2020-01-17T19:30Z	4.976	false
2020-01-17T19:15Z	4.852	false
2020-01-17T19:00Z	4.707	false
2020-01-17T18:45Z	4.582	false
2020-01-17T18:30Z	4.52	false
2020-01-17T18:15Z	4.527	false
2020-01-17T18:00Z	4.523	false
2020-01-17T17:45Z	4.514	false
2020-01-17T17:30Z	4.523	false
2020-01-17T17:15Z	4.525	false
2020-01-17T17:00Z	4.524	false
2020-01-17T16:45Z	4.519	false
2020-01-17T16:30Z	4.524	false
2020-01-17T16:15Z	4.519	false
2020-01-17T16:00Z	4.526	false
2020-01-17T15:45Z	4.52	false
2020-01-17T15:30Z	4.528	false
2020-01-17T15:15Z	4.527	false
2020-01-17T15:00Z	4.529	false
2020-01-17T14:45Z	4.523	false
2020-01-17T14:30Z	4.534	false
2020-01-17T14:15Z	4.534	false
2020-01-17T14:00Z	4.554	false
2020-01-17T13:45Z	4.557	false
2020-01-17T13:30Z	4.551	false
2020-01-17T13:15Z	4.547	false
2020-01-17T13:00Z	4.546	false
2020-01-17T12:45Z	4.541	false
2020-01-17T12:30Z	4.548	false
2020-01-17T12:15Z	4.553	false
2020-01-17T12:00Z	4.555	false
2020-01-17T11:45Z	4.566	false
2020-01-17T11:30Z	4.568	false
2020-01-17T11:15Z	4.576	false
2020-01-17T11:00Z	4.581	false
2020-01-17T10:45Z	4.591	false
2020-01-17T10:30Z	4.605	false
2020-01-17T10:15Z	4.619	false
2020-01-17T10:00Z	4.637	false
2020-01-17T09:45Z	4.669	false
2020-01-17T09:30Z	4.689	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

Share this page

• Twitter
• Facebook
• Email