River level The Roxbourne at Harrow, Thistledene Avenue

Check for flood warnings in this area

Latest recorded level 0.00m at 4:30am Thursday 15 November 2018.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 0.70m 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
2018-11-15T04:30Z	0.002	false
2018-11-15T04:15Z	0.002	false
2018-11-15T04:00Z	0.002	false
2018-11-15T03:45Z	0.002	false
2018-11-15T03:30Z	0.002	false
2018-11-15T03:15Z	0.002	false
2018-11-15T03:00Z	0.002	false
2018-11-15T02:45Z	0.002	false
2018-11-15T02:30Z	0.002	false
2018-11-15T02:15Z	0.002	false
2018-11-15T02:00Z	0.002	false
2018-11-15T01:45Z	0.002	false
2018-11-15T01:30Z	0.002	false
2018-11-15T01:15Z	0.002	false
2018-11-15T01:00Z	0.002	false
2018-11-15T00:45Z	0.002	false
2018-11-15T00:30Z	0.002	false
2018-11-15T00:15Z	0.002	false
2018-11-15T00:00Z	0.003	false
2018-11-14T23:45Z	0.002	false
2018-11-14T23:30Z	0.003	false
2018-11-14T23:15Z	0.003	false
2018-11-14T23:00Z	0.003	false
2018-11-14T22:45Z	0.003	false
2018-11-14T22:30Z	0.003	false
2018-11-14T22:15Z	0.003	false
2018-11-14T22:00Z	0.003	false
2018-11-14T21:45Z	0.003	false
2018-11-14T21:30Z	0.003	false
2018-11-14T21:15Z	0.003	false
2018-11-14T21:00Z	0.003	false
2018-11-14T20:45Z	0.003	false
2018-11-14T20:30Z	0.002	false
2018-11-14T20:15Z	0.003	false
2018-11-14T20:00Z	0.003	false
2018-11-14T19:45Z	0.003	false
2018-11-14T19:30Z	0.003	false
2018-11-14T19:15Z	0.003	false
2018-11-14T19:00Z	0.003	false
2018-11-14T18:45Z	0.003	false
2018-11-14T18:30Z	0.003	false
2018-11-14T18:15Z	0.003	false
2018-11-14T18:00Z	0.003	false
2018-11-14T17:45Z	0.003	false
2018-11-14T17:30Z	0.003	false
2018-11-14T17:15Z	0.003	false
2018-11-14T17:00Z	0.003	false
2018-11-14T16:45Z	0.002	false
2018-11-14T16:30Z	0.002	false
2018-11-14T16:15Z	0.002	false
2018-11-14T16:00Z	0.002	false
2018-11-14T15:45Z	0.001	false
2018-11-14T15:30Z	0.001	false
2018-11-14T15:15Z	0.001	false
2018-11-14T15:00Z	0.001	false
2018-11-14T14:45Z	0.001	false
2018-11-14T14:30Z	0.001	false
2018-11-14T14:15Z	0.001	false
2018-11-14T14:00Z	0.001	false
2018-11-14T13:45Z	0.001	false
2018-11-14T13:30Z	0.001	false
2018-11-14T13:15Z	0.001	false
2018-11-14T13:00Z	0.001	false
2018-11-14T12:45Z	0.001	false
2018-11-14T12:30Z	0.001	false
2018-11-14T12:15Z	0.001	false
2018-11-14T12:00Z	0.001	false
2018-11-14T11:45Z	0.001	false
2018-11-14T11:30Z	0.001	false
2018-11-14T11:15Z	0.001	false
2018-11-14T11:00Z	0.001	false
2018-11-14T10:45Z	0.001	false
2018-11-14T10:30Z	0.001	false
2018-11-14T10:15Z	0.001	false
2018-11-14T10:00Z	0.002	false
2018-11-14T09:45Z	0.002	false
2018-11-14T09:30Z	0.002	false
2018-11-14T09:15Z	0.002	false
2018-11-14T09:00Z	0.002	false
2018-11-14T08:45Z	0.002	false
2018-11-14T08:30Z	0.003	false
2018-11-14T08:15Z	0.002	false
2018-11-14T08:00Z	0.002	false
2018-11-14T07:45Z	0.002	false
2018-11-14T07:30Z	0.002	false
2018-11-14T07:15Z	0.002	false
2018-11-14T07:00Z	0.002	false
2018-11-14T06:45Z	0.002	false
2018-11-14T06:30Z	0.003	false
2018-11-14T06:15Z	0.002	false
2018-11-14T06:00Z	0.002	false
2018-11-14T05:45Z	0.002	false
2018-11-14T05:30Z	0.002	false
2018-11-14T05:15Z	0.002	false
2018-11-14T05:00Z	0.002	false
2018-11-14T04:45Z	0.002	false
2018-11-14T04:30Z	0.002	false
2018-11-14T04:15Z	0.002	false
2018-11-14T04:00Z	0.002	false
2018-11-14T03:45Z	0.002	false
2018-11-14T03:30Z	0.002	false
2018-11-14T03:15Z	0.002	false
2018-11-14T03:00Z	0.002	false
2018-11-14T02:45Z	0.002	false
2018-11-14T02:30Z	0.002	false
2018-11-14T02:15Z	0.002	false
2018-11-14T02:00Z	0.002	false
2018-11-14T01:45Z	0.002	false
2018-11-14T01:30Z	0.002	false
2018-11-14T01:15Z	0.002	false
2018-11-14T01:00Z	0.002	false
2018-11-14T00:45Z	0.002	false
2018-11-14T00:30Z	0.002	false
2018-11-14T00:15Z	0.002	false
2018-11-14T00:00Z	0.002	false
2018-11-13T23:45Z	0.002	false
2018-11-13T23:30Z	0.002	false
2018-11-13T23:15Z	0.002	false
2018-11-13T23:00Z	0.001	false
2018-11-13T22:45Z	0.001	false
2018-11-13T22:30Z	0.002	false
2018-11-13T22:15Z	0.001	false
2018-11-13T22:00Z		true
2018-11-13T21:45Z		true
2018-11-13T21:30Z		true
2018-11-13T21:15Z		true
2018-11-13T21:00Z		true
2018-11-13T20:45Z		true
2018-11-13T20:30Z		true
2018-11-13T20:15Z		true
2018-11-13T20:00Z		true
2018-11-13T19:45Z		true
2018-11-13T19:30Z		true
2018-11-13T19:15Z		true
2018-11-13T19:00Z		true
2018-11-13T18:45Z		true
2018-11-13T18:30Z		true
2018-11-13T18:15Z		true
2018-11-13T18:00Z		true
2018-11-13T17:45Z		true
2018-11-13T17:30Z		true
2018-11-13T17:15Z		true
2018-11-13T17:00Z		true
2018-11-13T16:45Z		true
2018-11-13T16:30Z		true
2018-11-13T16:15Z		true
2018-11-13T16:00Z		true
2018-11-13T15:45Z		true
2018-11-13T15:30Z		true
2018-11-13T15:15Z		true
2018-11-13T15:00Z		true
2018-11-13T14:45Z		true
2018-11-13T14:30Z		true
2018-11-13T14:15Z		true
2018-11-13T14:00Z		true
2018-11-13T13:45Z		true
2018-11-13T13:30Z		true
2018-11-13T13:15Z		true
2018-11-13T13:00Z		true
2018-11-13T12:45Z		true
2018-11-13T12:30Z		true
2018-11-13T12:15Z		true
2018-11-13T12:00Z		true
2018-11-13T11:45Z		true
2018-11-13T11:30Z		true
2018-11-13T11:15Z		true
2018-11-13T11:00Z		true
2018-11-13T10:45Z		true
2018-11-13T10:30Z		true
2018-11-13T10:15Z		true
2018-11-13T10:00Z		true
2018-11-13T09:45Z		true
2018-11-13T09:30Z		true
2018-11-13T09:15Z		true
2018-11-13T09:00Z		true
2018-11-13T08:45Z		true
2018-11-13T08:30Z		true
2018-11-13T08:15Z		true
2018-11-13T08:00Z		true
2018-11-13T07:45Z		true
2018-11-13T07:30Z		true
2018-11-13T07:15Z		true
2018-11-13T07:00Z		true
2018-11-13T06:45Z		true
2018-11-13T06:30Z		true
2018-11-13T06:15Z		true
2018-11-13T06:00Z		true
2018-11-13T05:45Z		true
2018-11-13T05:30Z		true
2018-11-13T05:15Z		true
2018-11-13T05:00Z		true
2018-11-13T04:45Z		true
2018-11-13T04:30Z		true
2018-11-13T04:15Z		true
2018-11-13T04:00Z		true
2018-11-13T03:45Z		true
2018-11-13T03:30Z		true
2018-11-13T03:15Z		true
2018-11-13T03:00Z		true
2018-11-13T02:45Z		true
2018-11-13T02:30Z		true
2018-11-13T02:15Z		true
2018-11-13T02:00Z		true
2018-11-13T01:45Z		true
2018-11-13T01:30Z		true
2018-11-13T01:15Z		true
2018-11-13T01:00Z		true
2018-11-13T00:45Z		true
2018-11-13T00:30Z		true
2018-11-13T00:15Z		true
2018-11-13T00:00Z		true
2018-11-12T23:45Z		true
2018-11-12T23:30Z		true
2018-11-12T23:15Z		true
2018-11-12T23:00Z		true
2018-11-12T22:45Z		true
2018-11-12T22:30Z		true
2018-11-12T22:15Z		true
2018-11-12T22:00Z		true
2018-11-12T21:45Z		true
2018-11-12T21:30Z		true
2018-11-12T21:15Z		true
2018-11-12T21:00Z		true
2018-11-12T20:45Z		true
2018-11-12T20:30Z		true
2018-11-12T20:15Z		true
2018-11-12T20:00Z		true
2018-11-12T19:45Z		true
2018-11-12T19:30Z		true
2018-11-12T19:15Z		true
2018-11-12T19:00Z		true
2018-11-12T18:45Z		true
2018-11-12T18:30Z		true
2018-11-12T18:15Z		true
2018-11-12T18:00Z		true
2018-11-12T17:45Z		true
2018-11-12T17:30Z		true
2018-11-12T17:15Z		true
2018-11-12T17:00Z		true
2018-11-12T16:45Z		true
2018-11-12T16:30Z		true
2018-11-12T16:15Z		true
2018-11-12T16:00Z		true
2018-11-12T15:45Z		true
2018-11-12T15:30Z		true
2018-11-12T15:15Z		true
2018-11-12T15:00Z		true
2018-11-12T14:45Z		true
2018-11-12T14:30Z		true
2018-11-12T14:15Z		true
2018-11-12T14:00Z		true
2018-11-12T13:45Z		true
2018-11-12T13:30Z		true
2018-11-12T13:15Z		true
2018-11-12T13:00Z		true
2018-11-12T12:45Z		true
2018-11-12T12:30Z		true
2018-11-12T12:15Z		true
2018-11-12T12:00Z		true
2018-11-12T11:45Z		true
2018-11-12T11:30Z		true
2018-11-12T11:15Z	0	false
2018-11-12T11:00Z	0.002	false
2018-11-12T10:45Z	0.003	false
2018-11-12T10:30Z	0.005	false
2018-11-12T10:15Z	0.006	false
2018-11-12T10:00Z	0.009	false
2018-11-12T09:45Z	0.013	false
2018-11-12T09:30Z	0.019	false
2018-11-12T09:15Z	0.026	false
2018-11-12T09:00Z	0.037	false
2018-11-12T08:45Z	0.043	false
2018-11-12T08:30Z	0.021	false
2018-11-12T08:15Z	0.016	false
2018-11-12T08:00Z	0.002	false
2018-11-12T07:45Z		true
2018-11-12T07:30Z		true
2018-11-12T07:15Z		true
2018-11-12T07:00Z		true
2018-11-12T06:45Z		true
2018-11-12T06:30Z		true
2018-11-12T06:15Z		true
2018-11-12T06:00Z		true
2018-11-12T05:45Z		true
2018-11-12T05:30Z		true
2018-11-12T05:15Z		true
2018-11-12T05:00Z		true
2018-11-12T04:45Z		true
2018-11-12T04:30Z		true
2018-11-12T04:15Z		true
2018-11-12T04:00Z		true
2018-11-12T03:45Z		true
2018-11-12T03:30Z		true
2018-11-12T03:15Z		true
2018-11-12T03:00Z		true
2018-11-12T02:45Z		true
2018-11-12T02:30Z		true
2018-11-12T02:15Z	0	false
2018-11-12T02:00Z	0	false
2018-11-12T01:45Z	0	false
2018-11-12T01:30Z	0.001	false
2018-11-12T01:15Z	0.002	false
2018-11-12T01:00Z	0.002	false
2018-11-12T00:45Z	0.002	false
2018-11-12T00:30Z	0.003	false
2018-11-12T00:15Z	0.004	false
2018-11-12T00:00Z	0.004	false
2018-11-11T23:45Z	0.005	false
2018-11-11T23:30Z	0.005	false
2018-11-11T23:15Z	0.005	false
2018-11-11T23:00Z	0.006	false
2018-11-11T22:45Z	0.006	false
2018-11-11T22:30Z	0.007	false
2018-11-11T22:15Z	0.007	false
2018-11-11T22:00Z	0.007	false
2018-11-11T21:45Z	0.008	false
2018-11-11T21:30Z	0.009	false
2018-11-11T21:15Z	0.008	false
2018-11-11T21:00Z	0.009	false
2018-11-11T20:45Z	0.01	false
2018-11-11T20:30Z	0.01	false
2018-11-11T20:15Z	0.011	false
2018-11-11T20:00Z	0.011	false
2018-11-11T19:45Z	0.012	false
2018-11-11T19:30Z	0.013	false
2018-11-11T19:15Z	0.014	false
2018-11-11T19:00Z	0.013	false
2018-11-11T18:45Z	0.014	false
2018-11-11T18:30Z	0.015	false
2018-11-11T18:15Z	0.016	false
2018-11-11T18:00Z	0.016	false
2018-11-11T17:45Z	0.017	false
2018-11-11T17:30Z	0.017	false
2018-11-11T17:15Z	0.019	false
2018-11-11T17:00Z	0.019	false
2018-11-11T16:45Z	0.021	false
2018-11-11T16:30Z	0.022	false
2018-11-11T16:15Z	0.022	false
2018-11-11T16:00Z	0.022	false
2018-11-11T15:45Z	0.024	false
2018-11-11T15:30Z	0.025	false
2018-11-11T15:15Z	0.025	false
2018-11-11T15:00Z	0.025	false
2018-11-11T14:45Z	0.026	false
2018-11-11T14:30Z	0.027	false
2018-11-11T14:15Z	0.027	false
2018-11-11T14:00Z	0.029	false
2018-11-11T13:45Z	0.03	false
2018-11-11T13:30Z	0.031	false
2018-11-11T13:15Z	0.033	false
2018-11-11T13:00Z	0.034	false
2018-11-11T12:45Z	0.035	false
2018-11-11T12:30Z	0.037	false
2018-11-11T12:15Z	0.038	false
2018-11-11T12:00Z	0.04	false
2018-11-11T11:45Z	0.041	false
2018-11-11T11:30Z	0.043	false
2018-11-11T11:15Z	0.047	false
2018-11-11T11:00Z	0.048	false
2018-11-11T10:45Z	0.05	false
2018-11-11T10:30Z	0.051	false
2018-11-11T10:15Z	0.053	false
2018-11-11T10:00Z	0.054	false
2018-11-11T09:45Z	0.056	false
2018-11-11T09:30Z	0.059	false
2018-11-11T09:15Z	0.062	false
2018-11-11T09:00Z	0.066	false
2018-11-11T08:45Z	0.074	false
2018-11-11T08:30Z	0.079	false
2018-11-11T08:15Z	0.085	false
2018-11-11T08:00Z	0.095	false
2018-11-11T07:45Z	0.111	false
2018-11-11T07:30Z	0.14	false
2018-11-11T07:15Z	0.18	false
2018-11-11T07:00Z	0.175	false
2018-11-11T06:45Z	0.167	false
2018-11-11T06:30Z	0.191	false
2018-11-11T06:15Z	0.143	false
2018-11-11T06:00Z	0.121	false
2018-11-11T05:45Z	0.044	false
2018-11-11T05:30Z	0.043	false
2018-11-11T05:15Z	0.044	false
2018-11-11T05:00Z	0.046	false
2018-11-11T04:45Z	0.047	false
2018-11-11T04:30Z	0.049	false
2018-11-11T04:15Z	0.051	false
2018-11-11T04:00Z	0.052	false
2018-11-11T03:45Z	0.055	false
2018-11-11T03:30Z	0.06	false
2018-11-11T03:15Z	0.063	false
2018-11-11T03:00Z	0.065	false
2018-11-11T02:45Z	0.068	false
2018-11-11T02:30Z	0.072	false
2018-11-11T02:15Z	0.076	false
2018-11-11T02:00Z	0.082	false
2018-11-11T01:45Z	0.091	false
2018-11-11T01:30Z	0.103	false
2018-11-11T01:15Z	0.116	false
2018-11-11T01:00Z	0.108	false
2018-11-11T00:45Z	0.098	false
2018-11-11T00:30Z	0.092	false
2018-11-11T00:15Z	0.092	false
2018-11-11T00:00Z	0.095	false
2018-11-10T23:45Z	0.099	false
2018-11-10T23:30Z	0.108	false
2018-11-10T23:15Z	0.125	false
2018-11-10T23:00Z	0.147	false
2018-11-10T22:45Z	0.154	false
2018-11-10T22:30Z	0.145	false
2018-11-10T22:15Z	0.136	false
2018-11-10T22:00Z	0.122	false
2018-11-10T21:45Z	0.123	false
2018-11-10T21:30Z	0.132	false
2018-11-10T21:15Z	0.158	false
2018-11-10T21:00Z	0.166	false
2018-11-10T20:45Z	0.132	false
2018-11-10T20:30Z	0.116	false
2018-11-10T20:15Z	0.117	false
2018-11-10T20:00Z	0.13	false
2018-11-10T19:45Z	0.153	false
2018-11-10T19:30Z	0.171	false
2018-11-10T19:15Z	0.206	false
2018-11-10T19:00Z	0.261	false
2018-11-10T18:45Z	0.325	false
2018-11-10T18:30Z	0.351	false
2018-11-10T18:15Z	0.354	false
2018-11-10T18:00Z	0.373	false
2018-11-10T17:45Z	0.366	false
2018-11-10T17:30Z	0.276	false
2018-11-10T17:15Z	0.162	false
2018-11-10T17:00Z	0.101	false
2018-11-10T16:45Z	0.125	false
2018-11-10T16:30Z	0.106	false
2018-11-10T16:15Z	0.094	false
2018-11-10T16:00Z	0.103	false
2018-11-10T15:45Z	0.137	false
2018-11-10T15:30Z	0.178	false
2018-11-10T15:15Z	0.201	false
2018-11-10T15:00Z	0.115	false
2018-11-10T14:45Z	0.055	false
2018-11-10T14:30Z	0.001	false
2018-11-10T14:15Z	0.001	false
2018-11-10T14:00Z	0.002	false
2018-11-10T13:45Z	0.003	false
2018-11-10T13:30Z	0.002	false
2018-11-10T13:15Z	0.002	false
2018-11-10T13:00Z	0.003	false
2018-11-10T12:45Z	0.004	false
2018-11-10T12:30Z	0.004	false
2018-11-10T12:15Z	0.004	false
2018-11-10T12:00Z	0.005	false
2018-11-10T11:45Z	0.005	false
2018-11-10T11:30Z	0.006	false
2018-11-10T11:15Z	0.007	false
2018-11-10T11:00Z	0.007	false
2018-11-10T10:45Z	0.007	false
2018-11-10T10:30Z	0.009	false
2018-11-10T10:15Z	0.009	false
2018-11-10T10:00Z	0.01	false
2018-11-10T09:45Z	0.011	false
2018-11-10T09:30Z	0.011	false
2018-11-10T09:15Z	0.012	false
2018-11-10T09:00Z	0.013	false
2018-11-10T08:45Z	0.014	false
2018-11-10T08:30Z	0.015	false
2018-11-10T08:15Z	0.016	false
2018-11-10T08:00Z	0.018	false
2018-11-10T07:45Z	0.019	false
2018-11-10T07:30Z	0.02	false
2018-11-10T07:15Z	0.022	false
2018-11-10T07:00Z	0.023	false
2018-11-10T06:45Z	0.025	false
2018-11-10T06:30Z	0.025	false
2018-11-10T06:15Z	0.027	false
2018-11-10T06:00Z	0.028	false
2018-11-10T05:45Z	0.034	false
2018-11-10T05:30Z	0.036	false
2018-11-10T05:15Z	0.039	false
2018-11-10T05:00Z	0.042	false
2018-11-10T04:45Z	0.045	false

Forecast data

Key information

• Station name: Harrow, Thistledene Avenue
• Station ID: 7272
• River name: The Roxbourne
• Typical range: 0.01m to 0.70m
• Highest level on record: 1.43m on 20 December 2010
• Site datum: 35.16mAOD (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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