River level River Thames at Sunbury Lock (downstream data)

Flooding is possible - Be prepared

The latest information indicates flooding is possible - Take action.

Check for flood warnings in this area

Latest recorded level 3.53m at 12:00pm Monday 17 February 2020.

View upstream data for this station

Why are there 2 sets of data for this station?

Some monitoring stations are located near to a man-made structure which affects the river's flow characteristics, for example a weir, or lock. For these stations, we provide river levels from both the upstream and downstream sides of the structure.

River levels at this location in the last 5 days

Now
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• Measured level
• When the water level reaches 3.34m 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
2020-02-17T12:00Z	3.528	false
2020-02-17T11:45Z	3.534	false
2020-02-17T11:30Z	3.54	false
2020-02-17T11:15Z	3.544	false
2020-02-17T11:00Z	3.55	false
2020-02-17T10:45Z	3.554	false
2020-02-17T10:30Z	3.562	false
2020-02-17T10:15Z	3.567	false
2020-02-17T10:00Z	3.567	false
2020-02-17T09:45Z	3.562	false
2020-02-17T09:30Z	3.553	false
2020-02-17T09:15Z	3.547	false
2020-02-17T09:00Z	3.528	false
2020-02-17T08:45Z	3.513	false
2020-02-17T08:30Z	3.502	false
2020-02-17T08:15Z	3.49	false
2020-02-17T08:00Z	3.475	false
2020-02-17T07:45Z	3.467	false
2020-02-17T07:30Z	3.468	false
2020-02-17T07:15Z	3.458	false
2020-02-17T07:00Z	3.453	false
2020-02-17T06:45Z	3.45	false
2020-02-17T06:30Z	3.443	false
2020-02-17T06:15Z	3.441	false
2020-02-17T06:00Z	3.435	false
2020-02-17T05:45Z	3.433	false
2020-02-17T05:30Z	3.429	false
2020-02-17T05:15Z	3.424	false
2020-02-17T05:00Z	3.424	false
2020-02-17T04:45Z	3.419	false
2020-02-17T04:30Z	3.413	false
2020-02-17T04:15Z	3.41	false
2020-02-17T04:00Z	3.401	false
2020-02-17T03:45Z	3.402	false
2020-02-17T03:30Z	3.394	false
2020-02-17T03:15Z	3.397	false
2020-02-17T03:00Z	3.392	false
2020-02-17T02:45Z	3.397	false
2020-02-17T02:30Z	3.391	false
2020-02-17T02:15Z	3.389	false
2020-02-17T02:00Z	3.387	false
2020-02-17T01:45Z	3.384	false
2020-02-17T01:30Z	3.39	false
2020-02-17T01:15Z	3.386	false
2020-02-17T01:00Z	3.386	false
2020-02-17T00:45Z	3.385	false
2020-02-17T00:30Z	3.385	false
2020-02-17T00:15Z	3.385	false
2020-02-17T00:00Z	3.388	false
2020-02-16T23:45Z	3.387	false
2020-02-16T23:30Z	3.385	false
2020-02-16T23:15Z	3.391	false
2020-02-16T23:00Z	3.387	false
2020-02-16T22:45Z	3.391	false
2020-02-16T22:30Z	3.391	false
2020-02-16T22:15Z	3.37	false
2020-02-16T22:00Z	3.37	false
2020-02-16T21:45Z	3.366	false
2020-02-16T21:30Z	3.366	false
2020-02-16T21:15Z	3.359	false
2020-02-16T21:00Z	3.353	false
2020-02-16T20:45Z	3.345	false
2020-02-16T20:30Z	3.345	false
2020-02-16T20:15Z	3.33	false
2020-02-16T20:00Z	3.328	false
2020-02-16T19:45Z	3.317	false
2020-02-16T19:30Z	3.312	false
2020-02-16T19:15Z	3.305	false
2020-02-16T19:00Z	3.306	false
2020-02-16T18:45Z	3.304	false
2020-02-16T18:30Z	3.3	false
2020-02-16T18:15Z	3.293	false
2020-02-16T18:00Z	3.291	false
2020-02-16T17:45Z	3.289	false
2020-02-16T17:30Z	3.287	false
2020-02-16T17:15Z	3.285	false
2020-02-16T17:00Z	3.289	false
2020-02-16T16:45Z	3.287	false
2020-02-16T16:30Z	3.287	false
2020-02-16T16:15Z	3.286	false
2020-02-16T16:00Z	3.286	false
2020-02-16T15:45Z	3.295	false
2020-02-16T15:30Z	3.288	false
2020-02-16T15:15Z	3.292	false
2020-02-16T15:00Z	3.293	false
2020-02-16T14:45Z	3.29	false
2020-02-16T14:30Z	3.296	false
2020-02-16T14:15Z	3.299	false
2020-02-16T14:00Z	3.307	false
2020-02-16T13:45Z	3.304	false
2020-02-16T13:30Z	3.279	false
2020-02-16T13:15Z	3.282	false
2020-02-16T13:00Z	3.277	false
2020-02-16T12:45Z	3.286	false
2020-02-16T12:30Z	3.265	false
2020-02-16T12:15Z	3.24	false
2020-02-16T12:00Z	3.235	false
2020-02-16T11:45Z	3.227	false
2020-02-16T11:30Z	3.227	false
2020-02-16T11:15Z	3.227	false
2020-02-16T11:00Z	3.219	false
2020-02-16T10:45Z	3.213	false
2020-02-16T10:30Z	3.207	false
2020-02-16T10:15Z	3.2	false
2020-02-16T10:00Z	3.196	false
2020-02-16T09:45Z	3.193	false
2020-02-16T09:30Z	3.191	false
2020-02-16T09:15Z	3.188	false
2020-02-16T09:00Z	3.176	false
2020-02-16T08:45Z	3.175	false
2020-02-16T08:30Z	3.166	false
2020-02-16T08:15Z	3.152	false
2020-02-16T08:00Z	3.148	false
2020-02-16T07:45Z	3.142	false
2020-02-16T07:30Z	3.12	false
2020-02-16T07:15Z	3.123	false
2020-02-16T07:00Z	3.111	false
2020-02-16T06:45Z	3.1	false
2020-02-16T06:30Z	3.095	false
2020-02-16T06:15Z	3.086	false
2020-02-16T06:00Z	3.078	false
2020-02-16T05:45Z	3.074	false
2020-02-16T05:30Z	3.06	false
2020-02-16T05:15Z	3.071	false
2020-02-16T05:00Z	3.067	false
2020-02-16T04:45Z	3.057	false
2020-02-16T04:30Z	3.055	false
2020-02-16T04:15Z	3.043	false
2020-02-16T04:00Z	3.054	false
2020-02-16T03:45Z	3.045	false
2020-02-16T03:30Z	3.031	false
2020-02-16T03:15Z	3.031	false
2020-02-16T03:00Z	3.035	false
2020-02-16T02:45Z	3.028	false
2020-02-16T02:30Z	3.03	false
2020-02-16T02:15Z	3.031	false
2020-02-16T02:00Z	3.028	false
2020-02-16T01:45Z	3.03	false
2020-02-16T01:30Z	3.025	false
2020-02-16T01:15Z	3.025	false
2020-02-16T01:00Z	3.033	false
2020-02-16T00:45Z	3.025	false
2020-02-16T00:30Z	3.021	false
2020-02-16T00:15Z	3.022	false
2020-02-16T00:00Z	3.026	false
2020-02-15T23:45Z	3.019	false
2020-02-15T23:30Z	3.029	false
2020-02-15T23:15Z	3.019	false
2020-02-15T23:00Z	3.019	false
2020-02-15T22:45Z	3.027	false
2020-02-15T22:30Z	3.03	false
2020-02-15T22:15Z	3.011	false
2020-02-15T22:00Z	3.035	false
2020-02-15T21:45Z	3.027	false
2020-02-15T21:30Z	3.039	false
2020-02-15T21:15Z	3.041	false
2020-02-15T21:00Z	3.044	false
2020-02-15T20:45Z	3.044	false
2020-02-15T20:30Z	3.044	false
2020-02-15T20:15Z	3.042	false
2020-02-15T20:00Z	3.037	false
2020-02-15T19:45Z	3.044	false
2020-02-15T19:30Z	3.043	false
2020-02-15T19:15Z	3.049	false
2020-02-15T19:00Z	3.053	false
2020-02-15T18:45Z	3.062	false
2020-02-15T18:30Z	3.046	false
2020-02-15T18:15Z	3.054	false
2020-02-15T18:00Z	3.057	false
2020-02-15T17:45Z	3.053	false
2020-02-15T17:30Z	3.06	false
2020-02-15T17:15Z	3.059	false
2020-02-15T17:00Z	3.055	false
2020-02-15T16:45Z	3.059	false
2020-02-15T16:30Z	3.057	false
2020-02-15T16:15Z	3.052	false
2020-02-15T16:00Z	3.056	false
2020-02-15T15:45Z	3.056	false
2020-02-15T15:30Z	3.05	false
2020-02-15T15:15Z	3.049	false
2020-02-15T15:00Z	3.049	false
2020-02-15T14:45Z	3.038	false
2020-02-15T14:30Z	3.049	false
2020-02-15T14:15Z	3.046	false
2020-02-15T14:00Z	3.054	false
2020-02-15T13:45Z	3.06	false
2020-02-15T13:30Z	3.068	false
2020-02-15T13:15Z	3.082	false
2020-02-15T13:00Z	3.082	false
2020-02-15T12:45Z	3.098	false
2020-02-15T12:30Z	3.108	false
2020-02-15T12:15Z	3.129	false
2020-02-15T12:00Z	3.146	false
2020-02-15T11:45Z	3.148	false
2020-02-15T11:30Z	3.154	false
2020-02-15T11:15Z	3.144	false
2020-02-15T11:00Z	3.097	false
2020-02-15T10:45Z	3.077	false
2020-02-15T10:30Z	3.088	false
2020-02-15T10:15Z	3.095	false
2020-02-15T10:00Z	3.1	false
2020-02-15T09:45Z	3.102	false
2020-02-15T09:30Z	3.107	false
2020-02-15T09:15Z	3.11	false
2020-02-15T09:00Z	3.116	false
2020-02-15T08:45Z	3.118	false
2020-02-15T08:30Z	3.123	false
2020-02-15T08:15Z	3.121	false
2020-02-15T08:00Z	3.118	false
2020-02-15T07:45Z	3.125	false
2020-02-15T07:30Z	3.122	false
2020-02-15T07:15Z	3.12	false
2020-02-15T07:00Z	3.126	false
2020-02-15T06:45Z	3.12	false
2020-02-15T06:30Z	3.13	false
2020-02-15T06:15Z	3.131	false
2020-02-15T06:00Z	3.134	false
2020-02-15T05:45Z	3.134	false
2020-02-15T05:30Z	3.137	false
2020-02-15T05:15Z	3.137	false
2020-02-15T05:00Z	3.138	false
2020-02-15T04:45Z	3.139	false
2020-02-15T04:30Z	3.142	false
2020-02-15T04:15Z	3.142	false
2020-02-15T04:00Z	3.141	false
2020-02-15T03:45Z	3.144	false
2020-02-15T03:30Z	3.145	false
2020-02-15T03:15Z	3.144	false
2020-02-15T03:00Z	3.144	false
2020-02-15T02:45Z	3.143	false
2020-02-15T02:30Z	3.146	false
2020-02-15T02:15Z	3.142	false
2020-02-15T02:00Z	3.145	false
2020-02-15T01:45Z	3.144	false
2020-02-15T01:30Z	3.147	false
2020-02-15T01:15Z	3.144	false
2020-02-15T01:00Z	3.144	false
2020-02-15T00:45Z	3.148	false
2020-02-15T00:30Z	3.144	false
2020-02-15T00:15Z	3.15	false
2020-02-15T00:00Z	3.15	false
2020-02-14T23:45Z	3.15	false
2020-02-14T23:30Z	3.147	false
2020-02-14T23:15Z	3.153	false
2020-02-14T23:00Z	3.153	false
2020-02-14T22:45Z	3.153	false
2020-02-14T22:30Z	3.152	false
2020-02-14T22:15Z	3.153	false
2020-02-14T22:00Z	3.148	false
2020-02-14T21:45Z	3.15	false
2020-02-14T21:30Z	3.149	false
2020-02-14T21:15Z	3.15	false
2020-02-14T21:00Z	3.145	false
2020-02-14T20:45Z	3.144	false
2020-02-14T20:30Z	3.142	false
2020-02-14T20:15Z	3.136	false
2020-02-14T20:00Z	3.136	false
2020-02-14T19:45Z	3.13	false
2020-02-14T19:30Z	3.131	false
2020-02-14T19:15Z	3.124	false
2020-02-14T19:00Z	3.118	false
2020-02-14T18:45Z	3.11	false
2020-02-14T18:30Z	3.102	false
2020-02-14T18:15Z	3.097	false
2020-02-14T18:00Z	3.085	false
2020-02-14T17:45Z	3.077	false
2020-02-14T17:30Z	3.067	false
2020-02-14T17:15Z	3.063	false
2020-02-14T17:00Z	3.06	false
2020-02-14T16:45Z	3.051	false
2020-02-14T16:30Z	3.043	false
2020-02-14T16:15Z	3.036	false
2020-02-14T16:00Z	3.02	false
2020-02-14T15:45Z	3.017	false
2020-02-14T15:30Z	2.995	false
2020-02-14T15:15Z	2.995	false
2020-02-14T15:00Z	2.988	false
2020-02-14T14:45Z	2.99	false
2020-02-14T14:30Z	2.992	false
2020-02-14T14:15Z	2.996	false
2020-02-14T14:00Z	2.994	false
2020-02-14T13:45Z	3.003	false
2020-02-14T13:30Z	3.007	false
2020-02-14T13:15Z	3.012	false
2020-02-14T13:00Z	3.018	false
2020-02-14T12:45Z	3.021	false
2020-02-14T12:30Z	3.001	false
2020-02-14T12:15Z	2.945	false
2020-02-14T12:00Z	2.945	false
2020-02-14T11:45Z	2.948	false
2020-02-14T11:30Z	2.956	false
2020-02-14T11:15Z	2.952	false
2020-02-14T11:00Z	2.954	false
2020-02-14T10:45Z	2.961	false
2020-02-14T10:30Z	2.977	false
2020-02-14T10:15Z	2.993	false
2020-02-14T10:00Z	3.021	false
2020-02-14T09:45Z	3.04	false
2020-02-14T09:30Z	3.043	false
2020-02-14T09:15Z	3.044	false
2020-02-14T09:00Z	3.046	false
2020-02-14T08:45Z	3.049	false
2020-02-14T08:30Z	3.055	false
2020-02-14T08:15Z	3.054	false
2020-02-14T08:00Z	3.059	false
2020-02-14T07:45Z	3.058	false
2020-02-14T07:30Z	3.058	false
2020-02-14T07:15Z	3.061	false
2020-02-14T07:00Z	3.056	false
2020-02-14T06:45Z	3.049	false
2020-02-14T06:30Z	3.043	false
2020-02-14T06:15Z	3.038	false
2020-02-14T06:00Z	3.034	false
2020-02-14T05:45Z	3.031	false
2020-02-14T05:30Z	3.029	false
2020-02-14T05:15Z	3.028	false
2020-02-14T05:00Z	3.026	false
2020-02-14T04:45Z	3.027	false
2020-02-14T04:30Z	3.026	false
2020-02-14T04:15Z	3.026	false
2020-02-14T04:00Z	3.028	false
2020-02-14T03:45Z	3.027	false
2020-02-14T03:30Z	3.028	false
2020-02-14T03:15Z	3.026	false
2020-02-14T03:00Z	3.026	false
2020-02-14T02:45Z	3.029	false
2020-02-14T02:30Z	3.023	false
2020-02-14T02:15Z	3.029	false
2020-02-14T02:00Z	3.03	false
2020-02-14T01:45Z	3.032	false
2020-02-14T01:30Z	3.032	false
2020-02-14T01:15Z	3.036	false
2020-02-14T01:00Z	3.033	false
2020-02-14T00:45Z	3.037	false
2020-02-14T00:30Z	3.038	false
2020-02-14T00:15Z	3.045	false
2020-02-14T00:00Z	3.048	false
2020-02-13T23:45Z	3.049	false
2020-02-13T23:30Z	3.049	false
2020-02-13T23:15Z	3.057	false
2020-02-13T23:00Z	3.058	false
2020-02-13T22:45Z	3.062	false
2020-02-13T22:30Z	3.064	false
2020-02-13T22:15Z	3.069	false
2020-02-13T22:00Z	3.069	false
2020-02-13T21:45Z	3.072	false
2020-02-13T21:30Z	3.074	false
2020-02-13T21:15Z	3.078	false
2020-02-13T21:00Z	3.075	false
2020-02-13T20:45Z	3.075	false
2020-02-13T20:30Z	3.073	false
2020-02-13T20:15Z	3.072	false
2020-02-13T20:00Z	3.069	false
2020-02-13T19:45Z	3.068	false
2020-02-13T19:30Z	3.076	false
2020-02-13T19:15Z	3.063	false
2020-02-13T19:00Z	3.068	false
2020-02-13T18:45Z	3.06	false
2020-02-13T18:30Z	3.048	false
2020-02-13T18:15Z	3.035	false
2020-02-13T18:00Z	3.024	false
2020-02-13T17:45Z	3.017	false
2020-02-13T17:30Z	3.013	false
2020-02-13T17:15Z	3.003	false
2020-02-13T17:00Z	2.999	false
2020-02-13T16:45Z	2.991	false
2020-02-13T16:30Z	2.987	false
2020-02-13T16:15Z	2.977	false
2020-02-13T16:00Z	2.96	false
2020-02-13T15:45Z	2.954	false
2020-02-13T15:30Z	2.96	false
2020-02-13T15:15Z	2.953	false
2020-02-13T15:00Z	2.954	false
2020-02-13T14:45Z	2.951	false
2020-02-13T14:30Z	2.954	false
2020-02-13T14:15Z	2.962	false
2020-02-13T14:00Z	2.957	false
2020-02-13T13:45Z	2.946	false
2020-02-13T13:30Z	2.945	false
2020-02-13T13:15Z	2.938	false
2020-02-13T13:00Z	2.936	false
2020-02-13T12:45Z	2.932	false
2020-02-13T12:30Z	2.924	false
2020-02-13T12:15Z	2.922	false
2020-02-13T12:00Z	2.917	false
2020-02-13T11:45Z	2.915	false
2020-02-13T11:30Z	2.911	false
2020-02-13T11:15Z	2.912	false
2020-02-13T11:00Z	2.911	false
2020-02-13T10:45Z	2.918	false
2020-02-13T10:30Z	2.911	false
2020-02-13T10:15Z	2.912	false
2020-02-13T10:00Z	2.914	false
2020-02-13T09:45Z	2.912	false
2020-02-13T09:30Z	2.912	false
2020-02-13T09:15Z	2.91	false
2020-02-13T09:00Z	2.912	false
2020-02-13T08:45Z	2.911	false
2020-02-13T08:30Z	2.912	false
2020-02-13T08:15Z	2.915	false
2020-02-13T08:00Z	2.915	false
2020-02-13T07:45Z	2.919	false
2020-02-13T07:30Z	2.92	false
2020-02-13T07:15Z	2.921	false
2020-02-13T07:00Z	2.923	false
2020-02-13T06:45Z	2.921	false
2020-02-13T06:30Z	2.917	false
2020-02-13T06:15Z	2.907	false
2020-02-13T06:00Z	2.896	false
2020-02-13T05:45Z	2.877	false
2020-02-13T05:30Z	2.866	false
2020-02-13T05:15Z	2.857	false
2020-02-13T05:00Z	2.852	false
2020-02-13T04:45Z	2.849	false
2020-02-13T04:30Z	2.845	false
2020-02-13T04:15Z	2.846	false
2020-02-13T04:00Z	2.849	false
2020-02-13T03:45Z	2.846	false
2020-02-13T03:30Z	2.846	false
2020-02-13T03:15Z	2.849	false
2020-02-13T03:00Z	2.849	false
2020-02-13T02:45Z	2.855	false
2020-02-13T02:30Z	2.855	false
2020-02-13T02:15Z	2.86	false
2020-02-13T02:00Z	2.861	false
2020-02-13T01:45Z	2.865	false
2020-02-13T01:30Z	2.872	false
2020-02-13T01:15Z	2.875	false
2020-02-13T01:00Z	2.883	false
2020-02-13T00:45Z	2.886	false
2020-02-13T00:30Z	2.889	false
2020-02-13T00:15Z	2.897	false
2020-02-13T00:00Z	2.899	false
2020-02-12T23:45Z	2.907	false
2020-02-12T23:30Z	2.911	false
2020-02-12T23:15Z	2.917	false
2020-02-12T23:00Z	2.924	false
2020-02-12T22:45Z	2.926	false
2020-02-12T22:30Z	2.929	false
2020-02-12T22:15Z	2.932	false
2020-02-12T22:00Z	2.933	false
2020-02-12T21:45Z	2.934	false
2020-02-12T21:30Z	2.936	false
2020-02-12T21:15Z	2.935	false
2020-02-12T21:00Z	2.938	false
2020-02-12T20:45Z	2.935	false
2020-02-12T20:30Z	2.938	false
2020-02-12T20:15Z	2.942	false
2020-02-12T20:00Z	2.946	false
2020-02-12T19:45Z	2.954	false
2020-02-12T19:30Z	2.962	false
2020-02-12T19:15Z	2.993	false
2020-02-12T19:00Z	2.996	false
2020-02-12T18:45Z	2.997	false
2020-02-12T18:30Z	2.99	false
2020-02-12T18:15Z	2.986	false
2020-02-12T18:00Z	2.976	false
2020-02-12T17:45Z	2.963	false
2020-02-12T17:30Z	2.943	false
2020-02-12T17:15Z	2.923	false
2020-02-12T17:00Z	2.903	false
2020-02-12T16:45Z	2.896	false
2020-02-12T16:30Z	2.889	false
2020-02-12T16:15Z	2.887	false
2020-02-12T16:00Z	2.874	false
2020-02-12T15:45Z	2.851	false
2020-02-12T15:30Z	2.836	false
2020-02-12T15:15Z	2.841	false
2020-02-12T15:00Z	2.846	false
2020-02-12T14:45Z	2.849	false
2020-02-12T14:30Z	2.854	false
2020-02-12T14:15Z	2.854	false
2020-02-12T14:00Z	2.854	false
2020-02-12T13:45Z	2.859	false
2020-02-12T13:30Z	2.86	false
2020-02-12T13:15Z	2.861	false
2020-02-12T13:00Z	2.861	false
2020-02-12T12:45Z	2.851	false
2020-02-12T12:30Z	2.843	false
2020-02-12T12:15Z	2.834	false

Forecast data

Key information

• Station name: Sunbury Lock (downstream)
• Station ID: 7245
• River name: River Thames
• Typical range: 2.29m to 3.34m
• Highest level on record: 5.05m on 11 February 2014
• Site datum: 3.94mAOD (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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