River level River Thames at Sonning Lock (downstream data)

Check for flood warnings in this area

Latest recorded level 1.98m at 6:00am Saturday 4 July 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 3.18m 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
2020-07-04T05:00Z	1.98	false
2020-07-04T04:45Z	1.982	false
2020-07-04T04:30Z	1.983	false
2020-07-04T04:15Z	1.981	false
2020-07-04T04:00Z	1.981	false
2020-07-04T03:45Z	1.982	false
2020-07-04T03:30Z	1.981	false
2020-07-04T03:15Z	1.981	false
2020-07-04T03:00Z	1.981	false
2020-07-04T02:45Z	1.98	false
2020-07-04T02:30Z	1.981	false
2020-07-04T02:15Z	1.98	false
2020-07-04T02:00Z	1.98	false
2020-07-04T01:45Z	1.98	false
2020-07-04T01:30Z	1.981	false
2020-07-04T01:15Z	1.981	false
2020-07-04T01:00Z	1.981	false
2020-07-04T00:45Z	1.982	false
2020-07-04T00:30Z	1.983	false
2020-07-04T00:15Z	1.982	false
2020-07-04T00:00Z	1.981	false
2020-07-03T23:45Z	1.984	false
2020-07-03T23:30Z	1.983	false
2020-07-03T23:15Z	1.981	false
2020-07-03T23:00Z	1.984	false
2020-07-03T22:45Z	1.982	false
2020-07-03T22:30Z	1.982	false
2020-07-03T22:15Z	1.982	false
2020-07-03T22:00Z	1.981	false
2020-07-03T21:45Z	1.981	false
2020-07-03T21:30Z	1.983	false
2020-07-03T21:15Z	1.983	false
2020-07-03T21:00Z	1.983	false
2020-07-03T20:45Z	1.984	false
2020-07-03T20:30Z	1.978	false
2020-07-03T20:15Z	1.98	false
2020-07-03T20:00Z	1.986	false
2020-07-03T19:45Z	1.982	false
2020-07-03T19:30Z	1.98	false
2020-07-03T19:15Z	1.985	false
2020-07-03T19:00Z	1.99	false
2020-07-03T18:45Z	1.979	false
2020-07-03T18:30Z	1.981	false
2020-07-03T18:15Z	1.978	false
2020-07-03T18:00Z	1.977	false
2020-07-03T17:45Z	1.981	false
2020-07-03T17:30Z	1.979	false
2020-07-03T17:15Z	1.976	false
2020-07-03T17:00Z	1.978	false
2020-07-03T16:45Z	1.976	false
2020-07-03T16:30Z	1.978	false
2020-07-03T16:15Z	1.978	false
2020-07-03T16:00Z	1.981	false
2020-07-03T15:45Z	1.984	false
2020-07-03T15:30Z	1.983	false
2020-07-03T15:15Z	1.98	false
2020-07-03T15:00Z	1.986	false
2020-07-03T14:45Z	1.983	false
2020-07-03T14:30Z	1.982	false
2020-07-03T14:15Z	1.984	false
2020-07-03T14:00Z	1.986	false
2020-07-03T13:45Z	1.987	false
2020-07-03T13:30Z	1.987	false
2020-07-03T13:15Z	1.992	false
2020-07-03T13:00Z	1.993	false
2020-07-03T12:45Z	1.981	false
2020-07-03T12:30Z	1.988	false
2020-07-03T12:15Z	1.986	false
2020-07-03T12:00Z	1.99	false
2020-07-03T11:45Z	1.988	false
2020-07-03T11:30Z	1.989	false
2020-07-03T11:15Z	1.987	false
2020-07-03T11:00Z	1.987	false
2020-07-03T10:45Z	1.985	false
2020-07-03T10:30Z	1.984	false
2020-07-03T10:15Z	1.98	false
2020-07-03T10:00Z	1.992	false
2020-07-03T09:45Z	1.988	false
2020-07-03T09:30Z	1.987	false
2020-07-03T09:15Z	1.987	false
2020-07-03T09:00Z	1.987	false
2020-07-03T08:45Z	1.988	false
2020-07-03T08:30Z	1.987	false
2020-07-03T08:15Z	1.985	false
2020-07-03T08:00Z	1.989	false
2020-07-03T07:45Z	1.986	false
2020-07-03T07:30Z	1.986	false
2020-07-03T07:15Z	1.986	false
2020-07-03T07:00Z	1.985	false
2020-07-03T06:45Z	1.986	false
2020-07-03T06:30Z	1.985	false
2020-07-03T06:15Z	1.985	false
2020-07-03T06:00Z	1.986	false
2020-07-03T05:45Z	1.987	false
2020-07-03T05:30Z	1.986	false
2020-07-03T05:15Z	1.988	false
2020-07-03T05:00Z	1.988	false
2020-07-03T04:45Z	1.989	false
2020-07-03T04:30Z	1.991	false
2020-07-03T04:15Z	1.991	false
2020-07-03T04:00Z	1.991	false
2020-07-03T03:45Z	1.992	false
2020-07-03T03:30Z	1.992	false
2020-07-03T03:15Z	1.993	false
2020-07-03T03:00Z	1.994	false
2020-07-03T02:45Z	1.995	false
2020-07-03T02:30Z	1.995	false
2020-07-03T02:15Z	1.996	false
2020-07-03T02:00Z	1.997	false
2020-07-03T01:45Z	1.997	false
2020-07-03T01:30Z	1.998	false
2020-07-03T01:15Z	1.999	false
2020-07-03T01:00Z	2	false
2020-07-03T00:45Z	2	false
2020-07-03T00:30Z	2	false
2020-07-03T00:15Z	2	false
2020-07-03T00:00Z	2.001	false
2020-07-02T23:45Z	2.002	false
2020-07-02T23:30Z	2.002	false
2020-07-02T23:15Z	2.003	false
2020-07-02T23:00Z	2.003	false
2020-07-02T22:45Z	2.004	false
2020-07-02T22:30Z	2.004	false
2020-07-02T22:15Z	2.006	false
2020-07-02T22:00Z	2.006	false
2020-07-02T21:45Z	2.006	false
2020-07-02T21:30Z	2.008	false
2020-07-02T21:15Z	2.006	false
2020-07-02T21:00Z	2.011	false
2020-07-02T20:45Z	2.01	false
2020-07-02T20:30Z	2.005	false
2020-07-02T20:15Z	2.011	false
2020-07-02T20:00Z	2.005	false
2020-07-02T19:45Z	2.009	false
2020-07-02T19:30Z	2.006	false
2020-07-02T19:15Z	2.002	false
2020-07-02T19:00Z	2.007	false
2020-07-02T18:45Z	2.007	false
2020-07-02T18:30Z	2.008	false
2020-07-02T18:15Z	2.01	false
2020-07-02T18:00Z	2.006	false
2020-07-02T17:45Z	2.019	false
2020-07-02T17:30Z	2.008	false
2020-07-02T17:15Z	2.01	false
2020-07-02T17:00Z	2.01	false
2020-07-02T16:45Z	2.008	false
2020-07-02T16:30Z	2.013	false
2020-07-02T16:15Z	2.008	false
2020-07-02T16:00Z	2.011	false
2020-07-02T15:45Z	2.018	false
2020-07-02T15:30Z	2.011	false
2020-07-02T15:15Z	2.01	false
2020-07-02T15:00Z	2.012	false
2020-07-02T14:45Z	2.011	false
2020-07-02T14:30Z	2.013	false
2020-07-02T14:15Z	2.007	false
2020-07-02T14:00Z	2.007	false
2020-07-02T13:45Z	2.01	false
2020-07-02T13:30Z	2.009	false
2020-07-02T13:15Z	2.012	false
2020-07-02T13:00Z	2.008	false
2020-07-02T12:45Z	2.013	false
2020-07-02T12:30Z	2.009	false
2020-07-02T12:15Z	2.012	false
2020-07-02T12:00Z	2.01	false
2020-07-02T11:45Z	2.005	false
2020-07-02T11:30Z	2.012	false
2020-07-02T11:15Z	2.009	false
2020-07-02T11:00Z	2.011	false
2020-07-02T10:45Z	2.012	false
2020-07-02T10:30Z	2.008	false
2020-07-02T10:15Z	2.007	false
2020-07-02T10:00Z	2.007	false
2020-07-02T09:45Z	2.009	false
2020-07-02T09:30Z	2.008	false
2020-07-02T09:15Z	2.004	false
2020-07-02T09:00Z	2.009	false
2020-07-02T08:45Z	2.007	false
2020-07-02T08:30Z	2.012	false
2020-07-02T08:15Z	2.008	false
2020-07-02T08:00Z	2.007	false
2020-07-02T07:45Z	2.008	false
2020-07-02T07:30Z	2.009	false
2020-07-02T07:15Z	2.009	false
2020-07-02T07:00Z	2.01	false
2020-07-02T06:45Z	2.01	false
2020-07-02T06:30Z	2.01	false
2020-07-02T06:15Z	2.009	false
2020-07-02T06:00Z	2.011	false
2020-07-02T05:45Z	2.013	false
2020-07-02T05:30Z	2.013	false
2020-07-02T05:15Z	2.013	false
2020-07-02T05:00Z	2.013	false
2020-07-02T04:45Z	2.011	false
2020-07-02T04:30Z	2.012	false
2020-07-02T04:15Z	2.013	false
2020-07-02T04:00Z	2.013	false
2020-07-02T03:45Z	2.013	false
2020-07-02T03:30Z	2.014	false
2020-07-02T03:15Z	2.014	false
2020-07-02T03:00Z	2.015	false
2020-07-02T02:45Z	2.015	false
2020-07-02T02:30Z	2.016	false
2020-07-02T02:15Z	2.015	false
2020-07-02T02:00Z	2.017	false
2020-07-02T01:45Z	2.016	false
2020-07-02T01:30Z	2.016	false
2020-07-02T01:15Z	2.017	false
2020-07-02T01:00Z	2.016	false
2020-07-02T00:45Z	2.015	false
2020-07-02T00:30Z	2.016	false
2020-07-02T00:15Z	2.017	false
2020-07-02T00:00Z	2.016	false
2020-07-01T23:45Z	2.017	false
2020-07-01T23:30Z	2.017	false
2020-07-01T23:15Z	2.016	false
2020-07-01T23:00Z	2.018	false
2020-07-01T22:45Z	2.017	false
2020-07-01T22:30Z	2.017	false
2020-07-01T22:15Z	2.017	false
2020-07-01T22:00Z	2.019	false
2020-07-01T21:45Z	2.018	false
2020-07-01T21:30Z	2.017	false
2020-07-01T21:15Z	2.017	false
2020-07-01T21:00Z	2.019	false
2020-07-01T20:45Z	2.018	false
2020-07-01T20:30Z	2.02	false
2020-07-01T20:15Z	2.018	false
2020-07-01T20:00Z	2.018	false
2020-07-01T19:45Z	2.024	false
2020-07-01T19:30Z	2.018	false
2020-07-01T19:15Z	2.017	false
2020-07-01T19:00Z	2.018	false
2020-07-01T18:45Z	2.017	false
2020-07-01T18:30Z	2.02	false
2020-07-01T18:15Z	2.016	false
2020-07-01T18:00Z	2.02	false
2020-07-01T17:45Z	2.016	false
2020-07-01T17:30Z	2.016	false
2020-07-01T17:15Z	2.018	false
2020-07-01T17:00Z	2.017	false
2020-07-01T16:45Z	2.019	false
2020-07-01T16:30Z	2.012	false
2020-07-01T16:15Z	2.016	false
2020-07-01T16:00Z	2.011	false
2020-07-01T15:45Z	2.011	false
2020-07-01T15:30Z	2.011	false
2020-07-01T15:15Z	2.01	false
2020-07-01T15:00Z	2.01	false
2020-07-01T14:45Z	2.01	false
2020-07-01T14:30Z	2.009	false
2020-07-01T14:15Z	2.012	false
2020-07-01T14:00Z	2.009	false
2020-07-01T13:45Z	2.007	false
2020-07-01T13:30Z	2.012	false
2020-07-01T13:15Z	2.012	false
2020-07-01T13:00Z	2.013	false
2020-07-01T12:45Z	2.012	false
2020-07-01T12:30Z	2.015	false
2020-07-01T12:15Z	2.006	false
2020-07-01T12:00Z	2.01	false
2020-07-01T11:45Z	2.012	false
2020-07-01T11:30Z	2.009	false
2020-07-01T11:15Z	2.012	false
2020-07-01T11:00Z	2.008	false
2020-07-01T10:45Z	2.009	false
2020-07-01T10:30Z	2.009	false
2020-07-01T10:15Z	2.01	false
2020-07-01T10:00Z	2.006	false
2020-07-01T09:45Z	2.016	false
2020-07-01T09:30Z	2.007	false
2020-07-01T09:15Z	2.007	false
2020-07-01T09:00Z	2.008	false
2020-07-01T08:45Z	2.009	false
2020-07-01T08:30Z	2.007	false
2020-07-01T08:15Z	2.009	false
2020-07-01T08:00Z	2.008	false
2020-07-01T07:45Z	2.008	false
2020-07-01T07:30Z	2.009	false
2020-07-01T07:15Z	2.008	false
2020-07-01T07:00Z	2.009	false
2020-07-01T06:45Z	2.01	false
2020-07-01T06:30Z	2.009	false
2020-07-01T06:15Z	2.01	false
2020-07-01T06:00Z	2.011	false
2020-07-01T05:45Z	2.012	false
2020-07-01T05:30Z	2.012	false
2020-07-01T05:15Z	2.013	false
2020-07-01T05:00Z	2.014	false
2020-07-01T04:45Z	2.013	false
2020-07-01T04:30Z	2.014	false
2020-07-01T04:15Z	2.016	false
2020-07-01T04:00Z	2.017	false
2020-07-01T03:45Z	2.016	false
2020-07-01T03:30Z	2.018	false
2020-07-01T03:15Z	2.018	false
2020-07-01T03:00Z	2.02	false
2020-07-01T02:45Z	2.019	false
2020-07-01T02:30Z	2.021	false
2020-07-01T02:15Z	2.021	false
2020-07-01T02:00Z	2.022	false
2020-07-01T01:45Z	2.022	false
2020-07-01T01:30Z	2.025	false
2020-07-01T01:15Z	2.025	false
2020-07-01T01:00Z	2.026	false
2020-07-01T00:45Z	2.027	false
2020-07-01T00:30Z	2.03	false
2020-07-01T00:15Z	2.029	false
2020-07-01T00:00Z	2.03	false
2020-06-30T23:45Z	2.032	false
2020-06-30T23:30Z	2.032	false
2020-06-30T23:15Z	2.033	false
2020-06-30T23:00Z	2.033	false
2020-06-30T22:45Z	2.034	false
2020-06-30T22:30Z	2.036	false
2020-06-30T22:15Z	2.036	false
2020-06-30T22:00Z	2.037	false
2020-06-30T21:45Z	2.04	false
2020-06-30T21:30Z	2.039	false
2020-06-30T21:15Z	2.041	false
2020-06-30T21:00Z	2.043	false
2020-06-30T20:45Z	2.043	false
2020-06-30T20:30Z	2.045	false
2020-06-30T20:15Z	2.045	false
2020-06-30T20:00Z	2.047	false
2020-06-30T19:45Z	2.045	false
2020-06-30T19:30Z	2.049	false
2020-06-30T19:15Z	2.05	false
2020-06-30T19:00Z	2.05	false
2020-06-30T18:45Z	2.052	false
2020-06-30T18:30Z	2.054	false
2020-06-30T18:15Z	2.055	false
2020-06-30T18:00Z	2.055	false
2020-06-30T17:45Z	2.056	false
2020-06-30T17:30Z	2.057	false
2020-06-30T17:15Z	2.059	false
2020-06-30T17:00Z	2.056	false
2020-06-30T16:45Z	2.069	false
2020-06-30T16:30Z	2.061	false
2020-06-30T16:15Z	2.06	false
2020-06-30T16:00Z	2.062	false
2020-06-30T15:45Z	2.063	false
2020-06-30T15:30Z	2.065	false
2020-06-30T15:15Z	2.067	false
2020-06-30T15:00Z	2.068	false
2020-06-30T14:45Z	2.068	false
2020-06-30T14:30Z	2.067	false
2020-06-30T14:15Z	2.069	false
2020-06-30T14:00Z	2.07	false
2020-06-30T13:45Z	2.072	false
2020-06-30T13:30Z	2.074	false
2020-06-30T13:15Z	2.073	false
2020-06-30T13:00Z	2.077	false
2020-06-30T12:45Z	2.073	false
2020-06-30T12:30Z	2.071	false
2020-06-30T12:15Z	2.071	false
2020-06-30T12:00Z	2.07	false
2020-06-30T11:45Z	2.073	false
2020-06-30T11:30Z	2.07	false
2020-06-30T11:15Z	2.076	false
2020-06-30T11:00Z	2.07	false
2020-06-30T10:45Z	2.07	false
2020-06-30T10:30Z	2.069	false
2020-06-30T10:15Z	2.071	false
2020-06-30T10:00Z	2.07	false
2020-06-30T09:45Z	2.068	false
2020-06-30T09:30Z	2.071	false
2020-06-30T09:15Z	2.07	false
2020-06-30T09:00Z	2.071	false
2020-06-30T08:45Z	2.07	false
2020-06-30T08:30Z	2.071	false
2020-06-30T08:15Z	2.071	false
2020-06-30T08:00Z	2.071	false
2020-06-30T07:45Z	2.071	false
2020-06-30T07:30Z	2.072	false
2020-06-30T07:15Z	2.072	false
2020-06-30T07:00Z	2.072	false
2020-06-30T06:45Z	2.072	false
2020-06-30T06:30Z	2.071	false
2020-06-30T06:15Z	2.072	false
2020-06-30T06:00Z	2.071	false
2020-06-30T05:45Z	2.072	false
2020-06-30T05:30Z	2.072	false
2020-06-30T05:15Z	2.072	false
2020-06-30T05:00Z	2.071	false
2020-06-30T04:45Z	2.072	false
2020-06-30T04:30Z	2.072	false
2020-06-30T04:15Z	2.071	false
2020-06-30T04:00Z	2.072	false
2020-06-30T03:45Z	2.072	false
2020-06-30T03:30Z	2.07	false
2020-06-30T03:15Z	2.073	false
2020-06-30T03:00Z	2.071	false
2020-06-30T02:45Z	2.07	false
2020-06-30T02:30Z	2.069	false
2020-06-30T02:15Z	2.068	false
2020-06-30T02:00Z	2.068	false
2020-06-30T01:45Z	2.068	false
2020-06-30T01:30Z	2.067	false
2020-06-30T01:15Z	2.065	false
2020-06-30T01:00Z	2.063	false
2020-06-30T00:45Z	2.063	false
2020-06-30T00:30Z	2.062	false
2020-06-30T00:15Z	2.061	false
2020-06-30T00:00Z	2.06	false
2020-06-29T23:45Z	2.06	false
2020-06-29T23:30Z	2.059	false
2020-06-29T23:15Z	2.057	false
2020-06-29T23:00Z	2.054	false
2020-06-29T22:45Z	2.052	false
2020-06-29T22:30Z	2.053	false
2020-06-29T22:15Z	2.05	false
2020-06-29T22:00Z	2.051	false
2020-06-29T21:45Z	2.049	false
2020-06-29T21:30Z	2.047	false
2020-06-29T21:15Z	2.046	false
2020-06-29T21:00Z	2.045	false
2020-06-29T20:45Z	2.044	false
2020-06-29T20:30Z	2.043	false
2020-06-29T20:15Z	2.043	false
2020-06-29T20:00Z	2.043	false
2020-06-29T19:45Z	2.041	false
2020-06-29T19:30Z	2.045	false
2020-06-29T19:15Z	2.042	false
2020-06-29T19:00Z	2.041	false
2020-06-29T18:45Z	2.045	false
2020-06-29T18:30Z	2.041	false
2020-06-29T18:15Z	2.048	false
2020-06-29T18:00Z	2.041	false
2020-06-29T17:45Z	2.042	false
2020-06-29T17:30Z	2.041	false
2020-06-29T17:15Z	2.041	false
2020-06-29T17:00Z	2.042	false
2020-06-29T16:45Z	2.042	false
2020-06-29T16:30Z	2.041	false
2020-06-29T16:15Z	2.041	false
2020-06-29T16:00Z	2.041	false
2020-06-29T15:45Z	2.041	false
2020-06-29T15:30Z	2.038	false
2020-06-29T15:15Z	2.05	false
2020-06-29T15:00Z	2.038	false
2020-06-29T14:45Z	2.04	false
2020-06-29T14:30Z	2.04	false
2020-06-29T14:15Z	2.038	false
2020-06-29T14:00Z	2.037	false
2020-06-29T13:45Z	2.032	false
2020-06-29T13:30Z	2.039	false
2020-06-29T13:15Z	2.037	false
2020-06-29T13:00Z	2.035	false
2020-06-29T12:45Z	2.037	false
2020-06-29T12:30Z	2.034	false
2020-06-29T12:15Z	2.032	false
2020-06-29T12:00Z	2.033	false
2020-06-29T11:45Z	2.032	false
2020-06-29T11:30Z	2.032	false
2020-06-29T11:15Z	2.029	false
2020-06-29T11:00Z	2.026	false
2020-06-29T10:45Z	2.025	false
2020-06-29T10:30Z	2.025	false
2020-06-29T10:15Z	2.032	false
2020-06-29T10:00Z	2.029	false
2020-06-29T09:45Z	2.023	false
2020-06-29T09:30Z	2.027	false
2020-06-29T09:15Z	2.026	false
2020-06-29T09:00Z	2.027	false
2020-06-29T08:45Z	2.027	false
2020-06-29T08:30Z	2.028	false
2020-06-29T08:15Z	2.027	false
2020-06-29T08:00Z	2.028	false
2020-06-29T07:45Z	2.022	false
2020-06-29T07:30Z	2.03	false
2020-06-29T07:15Z	2.025	false
2020-06-29T07:00Z	2.026	false
2020-06-29T06:45Z	2.025	false
2020-06-29T06:30Z	2.027	false
2020-06-29T06:15Z	2.025	false
2020-06-29T06:00Z	2.026	false
2020-06-29T05:45Z	2.027	false
2020-06-29T05:30Z	2.027	false
2020-06-29T05:15Z	2.028	false

Forecast data

Key information

• Station name: Sonning Lock (downstream)
• Station ID: 7132
• River name: River Thames
• Typical range: 2.00m to 3.18m
• Highest level on record: 3.96m on 04 January 2003
• Site datum: 31.61mAOD (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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