River level River Thames at Whitchurch Lock (upstream data)

Check for flood warnings in this area

Latest recorded level 0.03m at 1:00am Wednesday 20 March 2019.

View downstream 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 0.23m 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
2019-03-20T01:00Z	0.027	false
2019-03-20T00:45Z	0.029	false
2019-03-20T00:30Z	0.03	false
2019-03-20T00:15Z	0.031	false
2019-03-20T00:00Z	0.032	false
2019-03-19T23:45Z	0.033	false
2019-03-19T23:30Z	0.033	false
2019-03-19T23:15Z	0.033	false
2019-03-19T23:00Z	0.036	false
2019-03-19T22:45Z	0.036	false
2019-03-19T22:30Z	0.038	false
2019-03-19T22:15Z	0.038	false
2019-03-19T22:00Z	0.04	false
2019-03-19T21:45Z	0.04	false
2019-03-19T21:30Z	0.042	false
2019-03-19T21:15Z	0.043	false
2019-03-19T21:00Z	0.044	false
2019-03-19T20:45Z	0.045	false
2019-03-19T20:30Z	0.047	false
2019-03-19T20:15Z	0.048	false
2019-03-19T20:00Z	0.049	false
2019-03-19T19:45Z	0.05	false
2019-03-19T19:30Z	0.051	false
2019-03-19T19:15Z	0.054	false
2019-03-19T19:00Z	0.053	false
2019-03-19T18:45Z	0.055	false
2019-03-19T18:30Z	0.055	false
2019-03-19T18:15Z	0.057	false
2019-03-19T10:00Z	0.071	false
2019-03-19T09:45Z	0.07	false
2019-03-19T09:30Z	0.072	false
2019-03-19T09:15Z	0.071	false
2019-03-19T09:00Z	0.071	false
2019-03-19T08:45Z	0.071	false
2019-03-19T08:30Z	0.071	false
2019-03-19T08:15Z	0.071	false
2019-03-19T08:00Z	0.07	false
2019-03-19T07:45Z	0.07	false
2019-03-19T07:30Z	0.068	false
2019-03-19T07:15Z	0.069	false
2019-03-19T07:00Z	0.07	false
2019-03-19T06:45Z	0.069	false
2019-03-19T06:30Z	0.068	false
2019-03-19T06:15Z	0.068	false
2019-03-19T06:00Z	0.067	false
2019-03-19T05:45Z	0.067	false
2019-03-19T05:30Z	0.066	false
2019-03-19T05:15Z	0.066	false
2019-03-19T05:00Z	0.066	false
2019-03-19T04:45Z	0.065	false
2019-03-19T04:30Z	0.065	false
2019-03-19T04:15Z	0.064	false
2019-03-19T04:00Z	0.063	false
2019-03-19T03:45Z	0.063	false
2019-03-19T03:30Z	0.063	false
2019-03-19T03:15Z	0.062	false
2019-03-19T03:00Z	0.062	false
2019-03-19T02:45Z	0.061	false
2019-03-19T02:30Z	0.06	false
2019-03-19T02:15Z	0.059	false
2019-03-19T02:00Z	0.06	false
2019-03-19T01:45Z	0.058	false
2019-03-19T01:30Z	0.059	false
2019-03-19T01:15Z	0.059	false
2019-03-19T01:00Z	0.056	false
2019-03-19T00:45Z	0.057	false
2019-03-19T00:30Z	0.056	false
2019-03-19T00:15Z	0.056	false
2019-03-19T00:00Z	0.055	false
2019-03-18T23:45Z	0.055	false
2019-03-18T23:30Z	0.055	false
2019-03-18T23:15Z	0.055	false
2019-03-18T23:00Z	0.053	false
2019-03-18T22:45Z	0.055	false
2019-03-18T22:30Z	0.055	false
2019-03-18T22:15Z	0.054	false
2019-03-18T22:00Z	0.053	false
2019-03-18T21:45Z	0.053	false
2019-03-18T21:30Z	0.054	false
2019-03-18T21:15Z	0.053	false
2019-03-18T21:00Z	0.055	false
2019-03-18T20:45Z	0.055	false
2019-03-18T20:30Z	0.055	false
2019-03-18T20:15Z	0.056	false
2019-03-18T20:00Z	0.056	false
2019-03-18T19:45Z	0.058	false
2019-03-18T19:30Z	0.057	false
2019-03-18T19:15Z	0.058	false
2019-03-18T19:00Z	0.06	false
2019-03-18T18:45Z	0.061	false
2019-03-18T18:30Z	0.062	false
2019-03-18T18:15Z	0.064	false
2019-03-18T18:00Z	0.064	false
2019-03-18T17:45Z	0.066	false
2019-03-18T17:30Z	0.067	false
2019-03-18T17:15Z	0.07	false
2019-03-18T17:00Z	0.07	false
2019-03-18T16:45Z	0.073	false
2019-03-18T16:30Z	0.075	false
2019-03-18T16:15Z	0.076	false
2019-03-18T16:00Z	0.074	false
2019-03-18T15:45Z	0.076	false
2019-03-18T15:30Z	0.078	false
2019-03-18T15:15Z	0.077	false
2019-03-18T15:00Z	0.079	false
2019-03-18T14:45Z	0.078	false
2019-03-18T14:30Z	0.077	false
2019-03-18T14:15Z	0.077	false
2019-03-18T13:00Z	0.038	false
2019-03-18T12:45Z	0.074	false
2019-03-18T12:30Z	0.077	false
2019-03-18T12:15Z	0.078	false
2019-03-18T12:00Z	0.081	false
2019-03-18T11:45Z	0.075	false
2019-03-18T11:30Z	0.075	false
2019-03-18T11:15Z	0.076	false
2019-03-18T11:00Z	0.072	false
2019-03-18T10:45Z	0.075	false
2019-03-18T10:30Z	0.073	false
2019-03-18T10:15Z	0.074	false
2019-03-18T10:00Z	0.072	false
2019-03-18T09:45Z	0.077	false
2019-03-18T09:30Z	0.077	false
2019-03-18T09:15Z	0.077	false
2019-03-18T09:00Z	0.074	false
2019-03-18T08:45Z	0.077	false
2019-03-18T08:30Z	0.077	false
2019-03-18T08:15Z	0.075	false
2019-03-18T08:00Z	0.075	false
2019-03-18T07:45Z	0.077	false
2019-03-18T07:30Z	0.075	false
2019-03-18T07:15Z	0.076	false
2019-03-18T07:00Z	0.075	false
2019-03-18T06:45Z	0.076	false
2019-03-18T06:30Z	0.076	false
2019-03-18T06:15Z	0.076	false
2019-03-18T06:00Z	0.076	false
2019-03-18T05:45Z	0.075	false
2019-03-18T05:30Z	0.076	false
2019-03-18T05:15Z	0.074	false
2019-03-18T05:00Z	0.076	false
2019-03-18T04:45Z	0.075	false
2019-03-18T04:30Z	0.074	false
2019-03-18T04:15Z	0.075	false
2019-03-18T04:00Z	0.074	false
2019-03-18T03:45Z	0.072	false
2019-03-18T03:30Z	0.072	false
2019-03-18T03:15Z	0.074	false
2019-03-18T03:00Z	0.071	false
2019-03-18T02:45Z	0.072	false
2019-03-18T02:30Z	0.071	false
2019-03-18T02:15Z	0.07	false
2019-03-18T02:00Z	0.07	false
2019-03-18T01:45Z	0.071	false
2019-03-18T01:30Z	0.07	false
2019-03-18T01:15Z	0.069	false
2019-03-18T01:00Z	0.068	false
2019-03-18T00:45Z	0.073	false
2019-03-18T00:30Z	0.07	false
2019-03-18T00:15Z	0.068	false
2019-03-18T00:00Z	0.065	false
2019-03-17T23:45Z	0.064	false
2019-03-17T23:30Z	0.062	false
2019-03-17T23:15Z	0.07	false
2019-03-17T23:00Z	0.067	false
2019-03-17T22:45Z	0.066	false
2019-03-17T22:30Z	0.062	false
2019-03-17T22:15Z	0.061	false
2019-03-17T22:00Z	0.064	false
2019-03-17T21:45Z	0.06	false
2019-03-17T21:30Z	0.058	false
2019-03-17T21:15Z	0.059	false
2019-03-17T21:00Z	0.061	false
2019-03-17T20:45Z	0.058	false
2019-03-17T20:30Z	0.056	false
2019-03-17T20:15Z	0.055	false
2019-03-17T20:00Z	0.054	false
2019-03-17T19:45Z	0.055	false
2019-03-17T19:30Z	0.051	false
2019-03-17T19:15Z	0.056	false
2019-03-17T19:00Z	0.054	false
2019-03-17T18:45Z	0.052	false
2019-03-17T18:30Z	0.049	false
2019-03-17T18:15Z	0.05	false
2019-03-17T18:00Z	0.048	false
2019-03-17T17:45Z	0.048	false
2019-03-17T17:30Z	0.048	false
2019-03-17T17:15Z	0.054	false
2019-03-17T17:00Z	0.051	false
2019-03-17T16:45Z	0.05	false
2019-03-17T16:30Z	0.053	false
2019-03-17T16:15Z	0.045	false
2019-03-17T16:00Z	0.054	false
2019-03-17T15:45Z	0.057	false
2019-03-17T15:30Z	0.064	false
2019-03-17T15:15Z	0.063	false
2019-03-17T15:00Z	0.073	false
2019-03-17T14:45Z	0.071	false
2019-03-17T14:30Z	0.074	false
2019-03-17T14:15Z	0.067	false
2019-03-17T14:00Z	0.075	false
2019-03-17T13:45Z	0.071	false
2019-03-17T13:30Z	0.075	false
2019-03-17T13:15Z	0.079	false
2019-03-17T13:00Z	0.079	false
2019-03-17T12:45Z	0.082	false
2019-03-17T12:30Z	0.079	false
2019-03-17T12:15Z	0.075	false
2019-03-17T12:00Z	0.087	false
2019-03-17T11:45Z	0.084	false
2019-03-17T11:30Z	0.089	false
2019-03-17T11:15Z	0.085	false
2019-03-17T11:00Z	0.093	false
2019-03-17T10:45Z	0.088	false
2019-03-17T10:30Z	0.096	false
2019-03-17T10:15Z	0.087	false
2019-03-17T10:00Z	0.09	false
2019-03-17T09:45Z	0.099	false
2019-03-17T09:30Z	0.096	false
2019-03-17T09:15Z	0.089	false
2019-03-17T09:00Z	0.094	false
2019-03-17T08:45Z	0.096	false
2019-03-17T08:30Z	0.097	false
2019-03-17T08:15Z	0.091	false
2019-03-17T08:00Z	0.093	false
2019-03-17T07:45Z	0.092	false
2019-03-17T07:30Z	0.093	false
2019-03-17T07:15Z	0.094	false
2019-03-17T07:00Z	0.094	false
2019-03-17T06:45Z	0.095	false
2019-03-17T06:30Z	0.095	false
2019-03-17T06:15Z	0.094	false
2019-03-17T06:00Z	0.094	false
2019-03-17T05:45Z	0.095	false
2019-03-17T05:30Z	0.095	false
2019-03-17T05:15Z	0.097	false
2019-03-17T05:00Z	0.096	false
2019-03-17T04:45Z	0.095	false
2019-03-17T04:30Z	0.097	false
2019-03-17T04:15Z	0.096	false
2019-03-17T04:00Z	0.098	false
2019-03-17T03:45Z	0.095	false
2019-03-17T03:30Z	0.098	false
2019-03-17T03:15Z	0.097	false
2019-03-17T03:00Z	0.096	false
2019-03-17T02:45Z	0.097	false
2019-03-17T02:30Z	0.099	false
2019-03-17T02:15Z	0.097	false
2019-03-17T02:00Z	0.097	false
2019-03-17T01:45Z	0.096	false
2019-03-17T01:30Z	0.098	false
2019-03-17T01:15Z	0.098	false
2019-03-17T01:00Z	0.099	false
2019-03-17T00:45Z	0.099	false
2019-03-17T00:30Z	0.1	false
2019-03-17T00:15Z	0.103	false
2019-03-17T00:00Z	0.103	false
2019-03-16T23:45Z	0.101	false
2019-03-16T23:30Z	0.101	false
2019-03-16T23:15Z	0.103	false
2019-03-16T23:00Z	0.103	false
2019-03-16T22:45Z	0.104	false
2019-03-16T22:30Z	0.108	false
2019-03-16T22:15Z	0.107	false
2019-03-16T22:00Z	0.103	false
2019-03-16T21:45Z	0.106	false
2019-03-16T21:30Z	0.104	false
2019-03-16T21:15Z	0.107	false
2019-03-16T21:00Z	0.106	false
2019-03-16T20:45Z	0.104	false
2019-03-16T20:30Z	0.103	false
2019-03-16T20:15Z	0.112	false
2019-03-16T20:00Z	0.103	false
2019-03-16T19:45Z	0.111	false
2019-03-16T19:30Z	0.104	false
2019-03-16T19:15Z	0.101	false
2019-03-16T19:00Z	0.109	false
2019-03-16T18:45Z	0.112	false
2019-03-16T18:30Z	0.103	false
2019-03-16T18:15Z	0.099	false
2019-03-16T18:00Z	0.1	false
2019-03-16T17:45Z	0.108	false
2019-03-16T17:30Z	0.098	false
2019-03-16T17:15Z	0.111	false
2019-03-16T17:00Z	0.104	false
2019-03-16T16:45Z	0.11	false
2019-03-16T16:30Z	0.096	false
2019-03-16T16:15Z	0.097	false
2019-03-16T16:00Z	0.098	false
2019-03-16T15:45Z	0.1	false
2019-03-16T15:30Z	0.092	false
2019-03-16T15:15Z	0.092	false
2019-03-16T15:00Z	0.091	false
2019-03-16T14:45Z	0.095	false
2019-03-16T14:30Z	0.084	false
2019-03-16T14:15Z	0.077	false
2019-03-16T14:00Z	0.087	false
2019-03-16T13:45Z	0.091	false
2019-03-16T13:30Z	0.092	false
2019-03-16T13:15Z	0.093	false
2019-03-16T13:00Z	0.104	false
2019-03-16T12:45Z	0.114	false
2019-03-16T12:30Z	0.105	false
2019-03-16T12:15Z	0.109	false
2019-03-16T12:00Z	0.104	false
2019-03-16T11:45Z	0.109	false
2019-03-16T11:30Z	0.106	false
2019-03-16T11:15Z	0.113	false
2019-03-16T11:00Z	0.111	false
2019-03-16T10:45Z	0.115	false
2019-03-16T10:30Z	0.108	false
2019-03-16T10:15Z	0.115	false
2019-03-16T10:00Z	0.114	false
2019-03-16T09:45Z	0.113	false
2019-03-16T09:30Z	0.116	false
2019-03-16T09:15Z	0.109	false
2019-03-16T09:00Z	0.116	false
2019-03-16T08:45Z	0.115	false
2019-03-16T08:30Z	0.117	false
2019-03-16T08:15Z	0.116	false
2019-03-16T08:00Z	0.116	false
2019-03-16T07:45Z	0.117	false
2019-03-16T07:30Z	0.115	false
2019-03-16T07:15Z	0.118	false
2019-03-16T07:00Z	0.117	false
2019-03-16T06:45Z	0.112	false
2019-03-16T06:30Z	0.116	false
2019-03-16T06:15Z	0.117	false
2019-03-16T06:00Z	0.117	false
2019-03-16T05:45Z	0.124	false
2019-03-16T05:30Z	0.116	false
2019-03-16T05:15Z	0.118	false
2019-03-16T05:00Z	0.116	false
2019-03-16T04:45Z	0.12	false
2019-03-16T04:30Z	0.12	false
2019-03-16T04:15Z	0.115	false
2019-03-16T04:00Z	0.124	false
2019-03-16T03:45Z	0.118	false
2019-03-16T03:30Z	0.123	false
2019-03-16T03:15Z	0.113	false
2019-03-16T03:00Z	0.116	false
2019-03-16T02:45Z	0.116	false
2019-03-16T02:30Z	0.117	false
2019-03-16T02:15Z	0.114	false
2019-03-16T02:00Z	0.115	false
2019-03-16T01:45Z	0.117	false
2019-03-16T01:30Z	0.115	false
2019-03-16T01:15Z	0.117	false
2019-03-16T01:00Z	0.112	false
2019-03-16T00:45Z	0.114	false
2019-03-16T00:30Z	0.111	false
2019-03-16T00:15Z	0.112	false
2019-03-16T00:00Z	0.111	false
2019-03-15T23:45Z	0.108	false
2019-03-15T23:30Z	0.108	false
2019-03-15T23:15Z	0.106	false
2019-03-15T23:00Z	0.106	false
2019-03-15T22:45Z	0.103	false
2019-03-15T22:30Z	0.099	false
2019-03-15T22:15Z	0.098	false
2019-03-15T22:00Z	0.098	false
2019-03-15T21:45Z	0.097	false
2019-03-15T21:30Z	0.094	false
2019-03-15T21:15Z	0.09	false
2019-03-15T21:00Z	0.089	false
2019-03-15T20:45Z	0.087	false
2019-03-15T20:30Z	0.079	false
2019-03-15T20:15Z	0.083	false
2019-03-15T20:00Z	0.08	false
2019-03-15T19:45Z	0.078	false
2019-03-15T19:30Z	0.078	false
2019-03-15T19:15Z	0.079	false
2019-03-15T19:00Z	0.075	false
2019-03-15T18:45Z	0.08	false
2019-03-15T18:30Z	0.088	false
2019-03-15T18:15Z	0.089	false
2019-03-15T18:00Z	0.096	false
2019-03-15T17:45Z	0.093	false
2019-03-15T17:30Z	0.096	false
2019-03-15T17:15Z	0.091	false
2019-03-15T17:00Z	0.099	false
2019-03-15T16:45Z	0.094	false
2019-03-15T16:30Z	0.097	false
2019-03-15T16:15Z	0.084	false
2019-03-15T16:00Z	0.089	false
2019-03-15T15:45Z	0.081	false
2019-03-15T15:30Z	0.08	false
2019-03-15T15:15Z	0.076	false
2019-03-15T15:00Z	0.072	false
2019-03-15T14:45Z	0.074	false
2019-03-15T14:30Z	0.074	false
2019-03-15T14:15Z	0.077	false
2019-03-15T14:00Z	0.065	false
2019-03-15T13:45Z	0.066	false
2019-03-15T13:30Z	0.066	false
2019-03-15T13:15Z	0.062	false
2019-03-15T13:00Z	0.056	false
2019-03-15T12:45Z	0.046	false
2019-03-15T12:30Z	0.057	false
2019-03-15T12:15Z	0.051	false
2019-03-15T12:00Z	0.046	false
2019-03-15T11:45Z	0.035	false
2019-03-15T11:30Z	0.039	false
2019-03-15T11:15Z	0.027	false
2019-03-15T11:00Z	0.023	false
2019-03-15T10:45Z	0.018	false
2019-03-15T10:30Z	0.013	false
2019-03-15T10:15Z	0.014	false
2019-03-15T10:00Z	0.021	false
2019-03-15T09:45Z		true
2019-03-15T09:30Z		true
2019-03-15T09:15Z		true
2019-03-15T09:00Z		true
2019-03-15T08:45Z		true
2019-03-15T08:30Z		true
2019-03-15T08:15Z		true
2019-03-15T08:00Z		true
2019-03-15T07:45Z		true
2019-03-15T07:30Z		true
2019-03-15T07:15Z	0.003	false
2019-03-15T07:00Z		true
2019-03-15T06:45Z	0.013	false
2019-03-15T06:30Z	0.008	false
2019-03-15T06:15Z	0.013	false
2019-03-15T06:00Z	0.011	false
2019-03-15T05:45Z	0.028	false
2019-03-15T05:30Z	0.034	false
2019-03-15T05:15Z	0.035	false
2019-03-15T05:00Z	0.026	false
2019-03-15T04:45Z	0.026	false
2019-03-15T04:30Z	0.036	false
2019-03-15T04:15Z	0.035	false
2019-03-15T04:00Z	0.029	false
2019-03-15T03:45Z	0.037	false
2019-03-15T03:30Z	0.037	false
2019-03-15T03:15Z	0.04	false
2019-03-15T03:00Z	0.048	false
2019-03-15T02:45Z	0.041	false
2019-03-15T02:30Z	0.041	false
2019-03-15T02:15Z	0.043	false
2019-03-15T02:00Z	0.039	false
2019-03-15T01:45Z	0.042	false
2019-03-15T01:30Z	0.039	false
2019-03-15T01:15Z	0.048	false

Forecast data

Key information

• Station name: Whitchurch Lock (upstream)
• Station ID: 7102
• River name: River Thames
• Typical range: 0.01m to 0.23m
• Highest level on record: 0.98m on 04 January 2003
• Site datum: 39.71mAOD (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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