River level The Roxbourne at Harrow, Thistledene Avenue

Check for flood warnings in this area

Latest recorded level 0.02m at 1:00pm Monday 14 October 2019.

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
2019-10-14T12:00Z	0.02	false
2019-10-14T11:45Z	0.022	false
2019-10-14T11:30Z	0.023	false
2019-10-14T11:15Z	0.024	false
2019-10-14T11:00Z	0.026	false
2019-10-14T10:45Z	0.028	false
2019-10-14T10:30Z	0.031	false
2019-10-14T10:15Z	0.033	false
2019-10-14T10:00Z	0.038	false
2019-10-14T09:45Z	0.043	false
2019-10-14T09:30Z	0.049	false
2019-10-14T09:15Z	0.056	false
2019-10-14T09:00Z	0.061	false
2019-10-14T08:45Z	0.066	false
2019-10-14T08:30Z	0.074	false
2019-10-14T08:15Z	0.083	false
2019-10-14T08:00Z	0.081	false
2019-10-14T07:45Z	0.071	false
2019-10-14T07:30Z	0.056	false
2019-10-14T07:15Z	0.034	false
2019-10-14T07:00Z	0.024	false
2019-10-14T06:45Z	0.015	false
2019-10-14T06:30Z	0.009	false
2019-10-14T06:15Z	0.007	false
2019-10-14T06:00Z	0.006	false
2019-10-14T05:45Z	0.006	false
2019-10-14T05:30Z	0.006	false
2019-10-14T05:15Z	0.006	false
2019-10-14T05:00Z	0.006	false
2019-10-14T04:45Z	0.006	false
2019-10-14T04:30Z	0.007	false
2019-10-14T04:15Z	0.007	false
2019-10-14T04:00Z	0.007	false
2019-10-14T03:45Z	0.008	false
2019-10-14T03:30Z	0.008	false
2019-10-14T03:15Z	0.008	false
2019-10-14T03:00Z	0.009	false
2019-10-14T02:45Z	0.009	false
2019-10-14T02:30Z	0.01	false
2019-10-14T02:15Z	0.01	false
2019-10-14T02:00Z	0.01	false
2019-10-14T01:45Z	0.01	false
2019-10-14T01:30Z	0.011	false
2019-10-14T01:15Z	0.011	false
2019-10-14T01:00Z	0.012	false
2019-10-14T00:45Z	0.012	false
2019-10-14T00:30Z	0.012	false
2019-10-14T00:15Z	0.013	false
2019-10-14T00:00Z	0.013	false
2019-10-13T23:45Z	0.014	false
2019-10-13T23:30Z	0.014	false
2019-10-13T23:15Z	0.014	false
2019-10-13T23:00Z	0.015	false
2019-10-13T22:45Z	0.015	false
2019-10-13T22:30Z	0.016	false
2019-10-13T22:15Z	0.017	false
2019-10-13T22:00Z	0.017	false
2019-10-13T21:45Z	0.017	false
2019-10-13T21:30Z	0.017	false
2019-10-13T21:15Z	0.018	false
2019-10-13T21:00Z	0.019	false
2019-10-13T20:45Z	0.019	false
2019-10-13T20:30Z	0.02	false
2019-10-13T20:15Z	0.02	false
2019-10-13T20:00Z	0.02	false
2019-10-13T19:45Z	0.021	false
2019-10-13T19:30Z	0.022	false
2019-10-13T19:15Z	0.022	false
2019-10-13T19:00Z	0.023	false
2019-10-13T18:45Z	0.024	false
2019-10-13T18:30Z	0.024	false
2019-10-13T18:15Z	0.025	false
2019-10-13T18:00Z	0.026	false
2019-10-13T17:45Z	0.027	false
2019-10-13T17:30Z	0.028	false
2019-10-13T17:15Z	0.028	false
2019-10-13T17:00Z	0.029	false
2019-10-13T16:45Z	0.03	false
2019-10-13T16:30Z	0.031	false
2019-10-13T16:15Z	0.031	false
2019-10-13T16:00Z	0.033	false
2019-10-13T15:45Z	0.033	false
2019-10-13T15:30Z	0.035	false
2019-10-13T15:15Z	0.035	false
2019-10-13T15:00Z	0.037	false
2019-10-13T14:45Z	0.038	false
2019-10-13T14:30Z	0.04	false
2019-10-13T14:15Z	0.041	false
2019-10-13T14:00Z	0.043	false
2019-10-13T13:45Z	0.046	false
2019-10-13T13:30Z	0.049	false
2019-10-13T13:15Z	0.052	false
2019-10-13T13:00Z	0.057	false
2019-10-13T12:45Z	0.061	false
2019-10-13T12:30Z	0.067	false
2019-10-13T12:15Z	0.071	false
2019-10-13T12:00Z	0.074	false
2019-10-13T11:45Z	0.074	false
2019-10-13T11:30Z	0.058	false
2019-10-13T11:15Z	0.046	false
2019-10-13T11:00Z	0.042	false
2019-10-13T10:45Z	0.04	false
2019-10-13T10:30Z	0.041	false
2019-10-13T10:15Z	0.041	false
2019-10-13T10:00Z	0.043	false
2019-10-13T09:45Z	0.043	false
2019-10-13T09:30Z	0.044	false
2019-10-13T09:15Z	0.045	false
2019-10-13T09:00Z	0.047	false
2019-10-13T08:45Z	0.048	false
2019-10-13T08:30Z	0.05	false
2019-10-13T08:15Z	0.051	false
2019-10-13T08:00Z	0.053	false
2019-10-13T07:45Z	0.055	false
2019-10-13T07:30Z	0.057	false
2019-10-13T07:15Z	0.059	false
2019-10-13T07:00Z	0.06	false
2019-10-13T06:45Z	0.063	false
2019-10-13T06:30Z	0.065	false
2019-10-13T06:15Z	0.068	false
2019-10-13T06:00Z	0.071	false
2019-10-13T05:45Z	0.072	false
2019-10-13T05:30Z	0.076	false
2019-10-13T05:15Z	0.078	false
2019-10-13T05:00Z	0.082	false
2019-10-13T04:45Z	0.086	false
2019-10-13T04:30Z	0.091	false
2019-10-13T04:15Z	0.095	false
2019-10-13T04:00Z	0.094	false
2019-10-13T03:45Z	0.091	false
2019-10-13T03:30Z	0.088	false
2019-10-13T03:15Z	0.086	false
2019-10-13T03:00Z	0.086	false
2019-10-13T02:45Z	0.086	false
2019-10-13T02:30Z	0.087	false
2019-10-13T02:15Z	0.09	false
2019-10-13T02:00Z	0.094	false
2019-10-13T01:45Z	0.099	false
2019-10-13T01:30Z	0.103	false
2019-10-13T01:15Z	0.11	false
2019-10-13T01:00Z	0.118	false
2019-10-13T00:45Z	0.117	false
2019-10-13T00:30Z	0.114	false
2019-10-13T00:15Z	0.118	false
2019-10-13T00:00Z	0.126	false
2019-10-12T23:45Z	0.133	false
2019-10-12T23:30Z	0.122	false
2019-10-12T23:15Z	0.108	false
2019-10-12T23:00Z	0.103	false
2019-10-12T22:45Z	0.102	false
2019-10-12T22:30Z	0.102	false
2019-10-12T22:15Z	0.103	false
2019-10-12T22:00Z	0.105	false
2019-10-12T21:45Z	0.112	false
2019-10-12T21:30Z	0.122	false
2019-10-12T21:15Z	0.139	false
2019-10-12T21:00Z	0.142	false
2019-10-12T20:45Z	0.127	false
2019-10-12T20:30Z	0.106	false
2019-10-12T20:15Z	0.09	false
2019-10-12T20:00Z	0.076	false
2019-10-12T19:45Z	0.058	false
2019-10-12T19:30Z	0.049	false
2019-10-12T19:15Z	0.043	false
2019-10-12T19:00Z	0.041	false
2019-10-12T18:45Z	0.042	false
2019-10-12T18:30Z	0.043	false
2019-10-12T18:15Z	0.047	false
2019-10-12T18:00Z	0.051	false
2019-10-12T17:45Z	0.056	false
2019-10-12T17:30Z	0.06	false
2019-10-12T17:15Z	0.064	false
2019-10-12T17:00Z	0.068	false
2019-10-12T16:45Z	0.069	false
2019-10-12T16:30Z	0.07	false
2019-10-12T16:15Z	0.071	false
2019-10-12T16:00Z	0.065	false
2019-10-12T15:45Z	0.055	false
2019-10-12T15:30Z	0.049	false
2019-10-12T15:15Z	0.045	false
2019-10-12T15:00Z	0.043	false
2019-10-12T14:45Z	0.042	false
2019-10-12T14:30Z	0.04	false
2019-10-12T14:15Z	0.039	false
2019-10-12T14:00Z	0.039	false
2019-10-12T13:45Z	0.04	false
2019-10-12T13:30Z	0.043	false
2019-10-12T13:15Z	0.048	false
2019-10-12T13:00Z	0.054	false
2019-10-12T12:45Z	0.058	false
2019-10-12T12:30Z	0.057	false
2019-10-12T12:15Z	0.054	false
2019-10-12T12:00Z	0.05	false
2019-10-12T11:45Z	0.049	false
2019-10-12T11:30Z	0.049	false
2019-10-12T11:15Z	0.051	false
2019-10-12T11:00Z	0.053	false
2019-10-12T10:45Z	0.046	false
2019-10-12T10:30Z	0.035	false
2019-10-12T10:15Z	0.032	false
2019-10-12T10:00Z	0.025	false
2019-10-12T09:45Z	0.02	false
2019-10-12T09:30Z	0.017	false
2019-10-12T09:15Z	0.015	false
2019-10-12T09:00Z	0.013	false
2019-10-12T08:45Z	0.012	false
2019-10-12T08:30Z	0.012	false
2019-10-12T08:15Z	0.012	false
2019-10-12T08:00Z	0.014	false
2019-10-12T07:45Z	0.014	false
2019-10-12T07:30Z	0.013	false
2019-10-12T07:15Z	0.013	false
2019-10-12T07:00Z	0.013	false
2019-10-12T06:45Z	0.014	false
2019-10-12T06:30Z	0.014	false
2019-10-12T06:15Z	0.015	false
2019-10-12T06:00Z	0.015	false
2019-10-12T05:45Z	0.015	false
2019-10-12T05:30Z	0.016	false
2019-10-12T05:15Z	0.017	false
2019-10-12T05:00Z	0.019	false
2019-10-12T04:45Z	0.02	false
2019-10-12T04:30Z	0.02	false
2019-10-12T04:15Z	0.022	false
2019-10-12T04:00Z	0.023	false
2019-10-12T03:45Z	0.025	false
2019-10-12T03:30Z	0.027	false
2019-10-12T03:15Z	0.029	false
2019-10-12T03:00Z	0.029	false
2019-10-12T02:45Z	0.028	false
2019-10-12T02:30Z	0.027	false
2019-10-12T02:15Z	0.027	false
2019-10-12T02:00Z	0.028	false
2019-10-12T01:45Z	0.029	false
2019-10-12T01:30Z	0.031	false
2019-10-12T01:15Z	0.033	false
2019-10-12T01:00Z	0.035	false
2019-10-12T00:45Z	0.037	false
2019-10-12T00:30Z	0.039	false
2019-10-12T00:15Z	0.039	false
2019-10-12T00:00Z	0.039	false
2019-10-11T23:45Z	0.039	false
2019-10-11T23:30Z	0.041	false
2019-10-11T23:15Z	0.042	false
2019-10-11T23:00Z	0.044	false
2019-10-11T22:45Z	0.047	false
2019-10-11T22:30Z	0.051	false
2019-10-11T22:15Z	0.055	false
2019-10-11T22:00Z	0.06	false
2019-10-11T21:45Z	0.066	false
2019-10-11T21:30Z	0.074	false
2019-10-11T21:15Z	0.083	false
2019-10-11T21:00Z	0.084	false
2019-10-11T20:45Z	0.075	false
2019-10-11T20:30Z	0.073	false
2019-10-11T20:15Z	0.075	false
2019-10-11T20:00Z	0.085	false
2019-10-11T19:45Z	0.086	false
2019-10-11T19:30Z	0.082	false
2019-10-11T19:15Z	0.091	false
2019-10-11T19:00Z	0.11	false
2019-10-11T18:45Z	0.136	false
2019-10-11T18:30Z	0.06	false
2019-10-11T18:15Z	0.074	false
2019-10-11T18:00Z	0.016	false
2019-10-11T17:45Z	0.016	false
2019-10-11T17:30Z	0.016	false
2019-10-11T17:15Z	0.016	false
2019-10-11T17:00Z	0.016	false
2019-10-11T16:45Z	0.016	false
2019-10-11T16:30Z	0.016	false
2019-10-11T16:15Z	0.016	false
2019-10-11T16:00Z	0.016	false
2019-10-11T15:45Z	0.016	false
2019-10-11T15:30Z	0.016	false
2019-10-11T15:15Z	0.016	false
2019-10-11T15:00Z	0.016	false
2019-10-11T14:45Z	0.016	false
2019-10-11T14:30Z	0.016	false
2019-10-11T14:15Z	0.016	false
2019-10-11T14:00Z	0.016	false
2019-10-11T13:45Z	0.016	false
2019-10-11T13:30Z	0.006	false
2019-10-11T13:15Z	0.007	false
2019-10-11T13:00Z	0.007	false
2019-10-11T12:45Z	0.008	false
2019-10-11T12:30Z	0.009	false
2019-10-11T12:15Z	0.009	false
2019-10-11T12:00Z	0.011	false
2019-10-11T11:45Z	0.012	false
2019-10-11T11:30Z	0.013	false
2019-10-11T11:15Z	0.014	false
2019-10-11T11:00Z	0.016	false
2019-10-11T10:45Z	0.018	false
2019-10-11T10:30Z	0.018	false
2019-10-11T10:15Z	0.016	false
2019-10-11T10:00Z	0.016	false
2019-10-11T09:45Z	0.017	false
2019-10-11T09:30Z	0.017	false
2019-10-11T09:15Z	0.017	false
2019-10-11T09:00Z	0.017	false
2019-10-11T08:45Z	0.016	false
2019-10-11T08:30Z	0.015	false
2019-10-11T08:15Z	0.016	false
2019-10-11T08:00Z	0.018	false
2019-10-11T07:45Z	0.021	false
2019-10-11T07:30Z	0.024	false
2019-10-11T07:15Z	0.026	false
2019-10-11T07:00Z	0.029	false
2019-10-11T06:45Z	0.032	false
2019-10-11T06:30Z	0.036	false
2019-10-11T06:15Z	0.039	false
2019-10-11T06:00Z	0.043	false
2019-10-11T05:45Z	0.047	false
2019-10-11T05:30Z	0.053	false
2019-10-11T05:15Z	0.061	false
2019-10-11T05:00Z	0.072	false
2019-10-11T04:45Z	0.093	false
2019-10-11T04:30Z	0.122	false
2019-10-11T04:15Z	0.15	false
2019-10-11T04:00Z	0.197	false
2019-10-11T03:45Z	0.279	false
2019-10-11T03:30Z	0.147	false
2019-10-11T03:15Z	0.148	false
2019-10-11T03:00Z	0.018	false
2019-10-11T02:45Z	0.018	false
2019-10-11T02:30Z	0.018	false
2019-10-11T02:15Z	0.018	false
2019-10-11T02:00Z	0.018	false
2019-10-11T01:45Z	0.018	false
2019-10-11T01:30Z	0.018	false
2019-10-11T01:15Z	0.018	false
2019-10-11T01:00Z	0.018	false
2019-10-11T00:45Z	0.018	false
2019-10-11T00:30Z	0.018	false
2019-10-11T00:15Z	0.019	false
2019-10-11T00:00Z	0.018	false
2019-10-10T23:45Z	0.018	false
2019-10-10T23:30Z	0.018	false
2019-10-10T23:15Z	0.018	false
2019-10-10T23:00Z	0.018	false
2019-10-10T22:45Z	0.018	false
2019-10-10T22:30Z	0.018	false
2019-10-10T22:15Z	0.018	false
2019-10-10T22:00Z	0.018	false
2019-10-10T21:45Z	0.018	false
2019-10-10T21:30Z	0.018	false
2019-10-10T21:15Z	0.018	false
2019-10-10T21:00Z	0.018	false
2019-10-10T20:45Z	0.018	false
2019-10-10T20:30Z	0.018	false
2019-10-10T20:15Z	0.018	false
2019-10-10T20:00Z	0.018	false
2019-10-10T19:45Z	0.019	false
2019-10-10T19:30Z	0.018	false
2019-10-10T19:15Z	0.019	false
2019-10-10T19:00Z	0.019	false
2019-10-10T18:45Z	0.019	false
2019-10-10T18:30Z	0.019	false
2019-10-10T18:15Z	0.019	false
2019-10-10T18:00Z	0.019	false
2019-10-10T17:45Z	0.019	false
2019-10-10T17:30Z	0.019	false
2019-10-10T17:15Z	0.019	false
2019-10-10T17:00Z	0.019	false
2019-10-10T16:45Z	0.018	false
2019-10-10T16:30Z	0.019	false
2019-10-10T16:15Z	0.019	false
2019-10-10T16:00Z	0.019	false
2019-10-10T15:45Z	0.019	false
2019-10-10T15:30Z	0.019	false
2019-10-10T15:15Z	0.019	false
2019-10-10T15:00Z	0.019	false
2019-10-10T14:45Z	0.019	false
2019-10-10T14:30Z	0.018	false
2019-10-10T14:15Z	0.018	false
2019-10-10T14:00Z	0.019	false
2019-10-10T13:45Z	0.018	false
2019-10-10T13:30Z	0.018	false
2019-10-10T13:15Z	0.019	false
2019-10-10T13:00Z	0.018	false
2019-10-10T12:45Z	0.019	false
2019-10-10T12:30Z	0.019	false
2019-10-10T12:15Z	0.019	false
2019-10-10T12:00Z	0.019	false
2019-10-10T11:45Z	0.019	false
2019-10-10T11:30Z	0.019	false
2019-10-10T11:15Z	0.019	false
2019-10-10T11:00Z	0.019	false
2019-10-10T10:45Z	0.019	false
2019-10-10T10:30Z	0.019	false
2019-10-10T10:15Z	0.019	false
2019-10-10T10:00Z	0.019	false
2019-10-10T09:45Z	0.019	false
2019-10-10T09:30Z	0.02	false
2019-10-10T09:15Z	0.02	false
2019-10-10T09:00Z	0.02	false
2019-10-10T08:45Z	0.02	false
2019-10-10T08:30Z	0.02	false
2019-10-10T08:15Z	0.02	false
2019-10-10T08:00Z	0.021	false
2019-10-10T07:45Z	0.021	false
2019-10-10T07:30Z	0.021	false
2019-10-10T07:15Z	0.021	false
2019-10-10T07:00Z	0.021	false
2019-10-10T06:45Z	0.021	false
2019-10-10T06:30Z	0.021	false
2019-10-10T06:15Z	0.021	false
2019-10-10T06:00Z	0.021	false
2019-10-10T05:45Z	0.021	false
2019-10-10T05:30Z	0.021	false
2019-10-10T05:15Z	0.021	false
2019-10-10T05:00Z	0.021	false
2019-10-10T04:45Z	0.02	false
2019-10-10T04:30Z	0.021	false
2019-10-10T04:15Z	0.021	false
2019-10-10T04:00Z	0.021	false
2019-10-10T03:45Z	0.021	false
2019-10-10T03:30Z	0.02	false
2019-10-10T03:15Z	0.021	false
2019-10-10T03:00Z	0.021	false
2019-10-10T02:45Z	0.021	false
2019-10-10T02:30Z	0.021	false
2019-10-10T02:15Z	0.021	false
2019-10-10T02:00Z	0.021	false
2019-10-10T01:45Z	0.02	false
2019-10-10T01:30Z	0.02	false
2019-10-10T01:15Z	0.02	false
2019-10-10T01:00Z	0.021	false
2019-10-10T00:45Z	0.02	false
2019-10-10T00:30Z	0.02	false
2019-10-10T00:15Z	0.02	false
2019-10-10T00:00Z	0.02	false
2019-10-09T23:45Z	0.02	false
2019-10-09T23:30Z	0.02	false
2019-10-09T23:15Z	0.02	false
2019-10-09T23:00Z	0.02	false
2019-10-09T22:45Z	0.02	false
2019-10-09T22:30Z	0.02	false
2019-10-09T22:15Z	0.02	false
2019-10-09T22:00Z	0.02	false
2019-10-09T21:45Z	0.02	false
2019-10-09T21:30Z	0.02	false
2019-10-09T21:15Z	0.02	false
2019-10-09T21:00Z	0.02	false
2019-10-09T20:45Z	0.02	false
2019-10-09T20:30Z	0.02	false
2019-10-09T20:15Z	0.02	false
2019-10-09T20:00Z	0.019	false
2019-10-09T19:45Z	0.019	false
2019-10-09T19:30Z	0.02	false
2019-10-09T19:15Z	0.02	false
2019-10-09T19:00Z	0.019	false
2019-10-09T18:45Z	0.019	false
2019-10-09T18:30Z	0.019	false
2019-10-09T18:15Z	0.019	false
2019-10-09T18:00Z	0.019	false
2019-10-09T17:45Z	0.019	false
2019-10-09T17:30Z	0.019	false
2019-10-09T17:15Z	0.019	false
2019-10-09T17:00Z	0.019	false
2019-10-09T16:45Z	0.019	false
2019-10-09T16:30Z	0.019	false
2019-10-09T16:15Z	0.019	false
2019-10-09T16:00Z	0.019	false
2019-10-09T15:45Z	0.019	false
2019-10-09T15:30Z	0.019	false
2019-10-09T15:15Z	0.019	false
2019-10-09T15:00Z	0.018	false
2019-10-09T14:45Z	0.019	false
2019-10-09T14:30Z	0.019	false
2019-10-09T14:15Z	0.019	false
2019-10-09T14:00Z	0.019	false
2019-10-09T13:45Z	0.02	false
2019-10-09T13:30Z	0.019	false
2019-10-09T13:15Z	0.019	false
2019-10-09T13:00Z	0.018	false
2019-10-09T12:45Z	0.019	false
2019-10-09T12:30Z	0.02	false
2019-10-09T12:15Z	0.019	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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