River level Canons Brook at Harlow, Elizabeth way

Check for flood warnings in this area

Latest recorded level 0.28m at 5:30am Saturday 20 July 2019.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.40m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2019-07-20T04:30Z	0.28	false
2019-07-20T04:15Z	0.287	false
2019-07-20T04:00Z	0.302	false
2019-07-20T03:45Z	0.346	false
2019-07-20T03:30Z	0.405	false
2019-07-20T03:15Z	0.468	false
2019-07-20T03:00Z	0.485	false
2019-07-20T02:45Z	0.441	false
2019-07-20T02:30Z	0.375	false
2019-07-20T02:15Z	0.405	false
2019-07-20T02:00Z	0.373	false
2019-07-20T01:45Z	0.392	false
2019-07-20T01:30Z	0.381	false
2019-07-20T01:15Z	0.323	false
2019-07-20T01:00Z	0.188	false
2019-07-20T00:45Z	0.196	false
2019-07-20T00:30Z	0.167	false
2019-07-20T00:15Z	0.079	false
2019-07-20T00:00Z	0.074	false
2019-07-19T23:45Z	0.074	false
2019-07-19T23:30Z	0.075	false
2019-07-19T23:15Z	0.076	false
2019-07-19T23:00Z	0.078	false
2019-07-19T22:45Z	0.08	false
2019-07-19T22:30Z	0.082	false
2019-07-19T22:15Z	0.084	false
2019-07-19T22:00Z	0.085	false
2019-07-19T21:45Z	0.086	false
2019-07-19T21:30Z	0.085	false
2019-07-19T21:15Z	0.084	false
2019-07-19T21:00Z	0.084	false
2019-07-19T20:45Z	0.083	false
2019-07-19T20:30Z	0.083	false
2019-07-19T20:15Z	0.085	false
2019-07-19T20:00Z	0.089	false
2019-07-19T19:45Z	0.093	false
2019-07-19T19:30Z	0.094	false
2019-07-19T19:15Z	0.092	false
2019-07-19T19:00Z	0.091	false
2019-07-19T18:45Z	0.092	false
2019-07-19T18:30Z	0.094	false
2019-07-19T18:15Z	0.096	false
2019-07-19T18:00Z	0.098	false
2019-07-19T17:45Z	0.1	false
2019-07-19T17:30Z	0.102	false
2019-07-19T17:15Z	0.104	false
2019-07-19T17:00Z	0.107	false
2019-07-19T16:45Z	0.109	false
2019-07-19T16:30Z	0.112	false
2019-07-19T16:15Z	0.115	false
2019-07-19T16:00Z	0.118	false
2019-07-19T15:45Z	0.122	false
2019-07-19T15:30Z	0.126	false
2019-07-19T15:15Z	0.127	false
2019-07-19T15:00Z	0.127	false
2019-07-19T14:45Z	0.127	false
2019-07-19T14:30Z	0.129	false
2019-07-19T14:15Z	0.132	false
2019-07-19T14:00Z	0.137	false
2019-07-19T13:45Z	0.144	false
2019-07-19T13:30Z	0.153	false
2019-07-19T13:15Z	0.165	false
2019-07-19T13:00Z	0.182	false
2019-07-19T12:45Z	0.206	false
2019-07-19T12:30Z	0.216	false
2019-07-19T12:15Z	0.224	false
2019-07-19T12:00Z	0.197	false
2019-07-19T11:45Z	0.112	false
2019-07-19T11:30Z	0.135	false
2019-07-19T11:15Z	0.154	false
2019-07-19T11:00Z	0.062	false
2019-07-19T10:45Z	0.044	false
2019-07-19T10:30Z	0.04	false
2019-07-19T10:15Z	0.04	false
2019-07-19T10:00Z	0.04	false
2019-07-19T09:45Z	0.04	false
2019-07-19T09:30Z	0.04	false
2019-07-19T09:15Z	0.04	false
2019-07-19T09:00Z	0.041	false
2019-07-19T08:45Z	0.041	false
2019-07-19T08:30Z	0.041	false
2019-07-19T08:15Z	0.041	false
2019-07-19T08:00Z	0.041	false
2019-07-19T07:45Z	0.041	false
2019-07-19T07:30Z	0.041	false
2019-07-19T07:15Z	0.042	false
2019-07-19T07:00Z	0.042	false
2019-07-19T06:45Z	0.042	false
2019-07-19T06:30Z	0.042	false
2019-07-19T06:15Z	0.042	false
2019-07-19T06:00Z	0.042	false
2019-07-19T05:45Z	0.043	false
2019-07-19T05:30Z	0.043	false
2019-07-19T05:15Z	0.043	false
2019-07-19T05:00Z	0.044	false
2019-07-19T04:45Z	0.044	false
2019-07-19T04:30Z	0.044	false
2019-07-19T04:15Z	0.044	false
2019-07-19T04:00Z	0.044	false
2019-07-19T03:45Z	0.045	false
2019-07-19T03:30Z	0.045	false
2019-07-19T03:15Z	0.045	false
2019-07-19T03:00Z	0.046	false
2019-07-19T02:45Z	0.046	false
2019-07-19T02:30Z	0.047	false
2019-07-19T02:15Z	0.047	false
2019-07-19T02:00Z	0.047	false
2019-07-19T01:45Z	0.048	false
2019-07-19T01:30Z	0.048	false
2019-07-19T01:15Z	0.049	false
2019-07-19T01:00Z	0.049	false
2019-07-19T00:45Z	0.05	false
2019-07-19T00:30Z	0.05	false
2019-07-19T00:15Z	0.05	false
2019-07-19T00:00Z	0.051	false
2019-07-18T23:45Z	0.051	false
2019-07-18T23:30Z	0.052	false
2019-07-18T23:15Z	0.052	false
2019-07-18T23:00Z	0.053	false
2019-07-18T22:45Z	0.054	false
2019-07-18T22:30Z	0.054	false
2019-07-18T22:15Z	0.055	false
2019-07-18T22:00Z	0.056	false
2019-07-18T21:45Z	0.056	false
2019-07-18T21:30Z	0.057	false
2019-07-18T21:15Z	0.058	false
2019-07-18T21:00Z	0.058	false
2019-07-18T20:45Z	0.059	false
2019-07-18T20:30Z	0.06	false
2019-07-18T20:15Z	0.06	false
2019-07-18T20:00Z	0.061	false
2019-07-18T19:45Z	0.062	false
2019-07-18T19:30Z	0.063	false
2019-07-18T19:15Z	0.064	false
2019-07-18T19:00Z	0.065	false
2019-07-18T18:45Z	0.066	false
2019-07-18T18:30Z	0.067	false
2019-07-18T18:15Z	0.068	false
2019-07-18T18:00Z	0.07	false
2019-07-18T17:45Z	0.071	false
2019-07-18T17:30Z	0.073	false
2019-07-18T17:15Z	0.074	false
2019-07-18T17:00Z	0.076	false
2019-07-18T16:45Z	0.077	false
2019-07-18T16:30Z	0.079	false
2019-07-18T16:15Z	0.08	false
2019-07-18T16:00Z	0.082	false
2019-07-18T15:45Z	0.084	false
2019-07-18T15:30Z	0.086	false
2019-07-18T15:15Z	0.088	false
2019-07-18T15:00Z	0.089	false
2019-07-18T14:45Z	0.092	false
2019-07-18T14:30Z	0.092	false
2019-07-18T14:15Z	0.094	false
2019-07-18T14:00Z	0.096	false
2019-07-18T13:45Z	0.098	false
2019-07-18T13:30Z	0.099	false
2019-07-18T13:15Z	0.101	false
2019-07-18T13:00Z	0.103	false
2019-07-18T12:45Z	0.105	false
2019-07-18T12:30Z	0.108	false
2019-07-18T12:15Z	0.112	false
2019-07-18T12:00Z	0.116	false
2019-07-18T11:45Z	0.12	false
2019-07-18T11:30Z	0.126	false
2019-07-18T11:15Z	0.132	false
2019-07-18T11:00Z	0.14	false
2019-07-18T10:45Z	0.148	false
2019-07-18T10:30Z	0.154	false
2019-07-18T10:15Z	0.16	false
2019-07-18T10:00Z	0.17	false
2019-07-18T09:45Z	0.178	false
2019-07-18T09:30Z	0.182	false
2019-07-18T09:15Z	0.179	false
2019-07-18T09:00Z	0.168	false
2019-07-18T08:45Z	0.081	false
2019-07-18T08:30Z	0.079	false
2019-07-18T08:15Z	0.079	false
2019-07-18T08:00Z	0.075	false
2019-07-18T07:45Z	0.045	false
2019-07-18T07:30Z	0.043	false
2019-07-18T07:15Z	0.042	false
2019-07-18T07:00Z	0.04	false
2019-07-18T06:45Z	0.041	false
2019-07-18T06:30Z	0.041	false
2019-07-18T06:15Z	0.04	false
2019-07-18T06:00Z	0.039	false
2019-07-18T05:45Z	0.039	false
2019-07-18T05:30Z	0.04	false
2019-07-18T05:15Z	0.039	false
2019-07-18T05:00Z	0.039	false
2019-07-18T04:45Z	0.039	false
2019-07-18T04:30Z	0.039	false
2019-07-18T04:15Z	0.038	false
2019-07-18T04:00Z	0.038	false
2019-07-18T03:45Z	0.038	false
2019-07-18T03:30Z	0.038	false
2019-07-18T03:15Z	0.038	false
2019-07-18T03:00Z	0.038	false
2019-07-18T02:45Z	0.039	false
2019-07-18T02:30Z	0.039	false
2019-07-18T02:15Z	0.039	false
2019-07-18T02:00Z	0.039	false
2019-07-18T01:45Z	0.039	false
2019-07-18T01:30Z	0.04	false
2019-07-18T01:15Z	0.04	false
2019-07-18T01:00Z	0.04	false
2019-07-18T00:45Z	0.04	false
2019-07-18T00:30Z	0.04	false
2019-07-18T00:15Z	0.041	false
2019-07-18T00:00Z	0.04	false
2019-07-17T23:45Z	0.04	false
2019-07-17T23:30Z	0.04	false
2019-07-17T23:15Z	0.041	false
2019-07-17T23:00Z	0.041	false
2019-07-17T22:45Z	0.041	false
2019-07-17T22:30Z	0.041	false
2019-07-17T22:15Z	0.041	false
2019-07-17T22:00Z	0.041	false
2019-07-17T21:45Z	0.041	false
2019-07-17T21:30Z	0.041	false
2019-07-17T21:15Z	0.042	false
2019-07-17T21:00Z	0.042	false
2019-07-17T20:45Z	0.042	false
2019-07-17T20:30Z	0.041	false
2019-07-17T20:15Z	0.041	false
2019-07-17T20:00Z	0.041	false
2019-07-17T19:45Z	0.041	false
2019-07-17T19:30Z	0.041	false
2019-07-17T19:15Z	0.041	false
2019-07-17T19:00Z	0.04	false
2019-07-17T18:45Z	0.04	false
2019-07-17T18:30Z	0.039	false
2019-07-17T18:15Z	0.039	false
2019-07-17T18:00Z	0.038	false
2019-07-17T17:45Z	0.036	false
2019-07-17T17:30Z	0.035	false
2019-07-17T17:15Z	0.034	false
2019-07-17T17:00Z	0.034	false
2019-07-17T16:45Z	0.034	false
2019-07-17T16:30Z	0.034	false
2019-07-17T16:15Z	0.034	false
2019-07-17T16:00Z	0.034	false
2019-07-17T15:45Z	0.034	false
2019-07-17T15:30Z	0.034	false
2019-07-17T15:15Z	0.034	false
2019-07-17T15:00Z	0.034	false
2019-07-17T14:45Z	0.034	false
2019-07-17T14:30Z	0.034	false
2019-07-17T14:15Z	0.034	false
2019-07-17T14:00Z	0.034	false
2019-07-17T13:45Z	0.034	false
2019-07-17T13:30Z	0.034	false
2019-07-17T13:15Z	0.034	false
2019-07-17T13:00Z	0.034	false
2019-07-17T12:45Z	0.034	false
2019-07-17T12:30Z	0.034	false
2019-07-17T12:15Z	0.034	false
2019-07-17T12:00Z	0.034	false
2019-07-17T11:45Z	0.035	false
2019-07-17T11:30Z	0.035	false
2019-07-17T11:15Z	0.035	false
2019-07-17T11:00Z	0.035	false
2019-07-17T10:45Z	0.035	false
2019-07-17T10:30Z	0.035	false
2019-07-17T10:15Z	0.035	false
2019-07-17T10:00Z	0.035	false
2019-07-17T09:45Z	0.035	false
2019-07-17T09:30Z	0.036	false
2019-07-17T09:15Z	0.036	false
2019-07-17T09:00Z	0.036	false
2019-07-17T08:45Z	0.036	false
2019-07-17T08:30Z	0.036	false
2019-07-17T08:15Z	0.036	false
2019-07-17T08:00Z	0.036	false
2019-07-17T07:45Z	0.036	false
2019-07-17T07:30Z	0.036	false
2019-07-17T07:15Z	0.036	false
2019-07-17T07:00Z	0.037	false
2019-07-17T06:45Z	0.037	false
2019-07-17T06:30Z	0.037	false
2019-07-17T06:15Z	0.037	false
2019-07-17T06:00Z	0.037	false
2019-07-17T05:45Z	0.038	false
2019-07-17T05:30Z	0.038	false
2019-07-17T05:15Z	0.038	false
2019-07-17T05:00Z	0.038	false
2019-07-17T04:45Z	0.038	false
2019-07-17T04:30Z	0.038	false
2019-07-17T04:15Z	0.038	false
2019-07-17T04:00Z	0.039	false
2019-07-17T03:45Z	0.039	false
2019-07-17T03:30Z	0.039	false
2019-07-17T03:15Z	0.039	false
2019-07-17T03:00Z	0.04	false
2019-07-17T02:45Z	0.04	false
2019-07-17T02:30Z	0.04	false
2019-07-17T02:15Z	0.04	false
2019-07-17T02:00Z	0.04	false
2019-07-17T01:45Z	0.041	false
2019-07-17T01:30Z	0.041	false
2019-07-17T01:15Z	0.041	false
2019-07-17T01:00Z	0.042	false
2019-07-17T00:45Z	0.042	false
2019-07-17T00:30Z	0.042	false
2019-07-17T00:15Z	0.042	false
2019-07-17T00:00Z	0.042	false
2019-07-16T23:45Z	0.043	false
2019-07-16T23:30Z	0.043	false
2019-07-16T23:15Z	0.043	false
2019-07-16T23:00Z	0.043	false
2019-07-16T22:45Z	0.043	false
2019-07-16T22:30Z	0.044	false
2019-07-16T22:15Z	0.044	false
2019-07-16T22:00Z	0.044	false
2019-07-16T21:45Z	0.044	false
2019-07-16T21:30Z	0.044	false
2019-07-16T21:15Z	0.044	false
2019-07-16T21:00Z	0.044	false
2019-07-16T20:45Z	0.044	false
2019-07-16T20:30Z	0.044	false
2019-07-16T20:15Z	0.044	false
2019-07-16T20:00Z	0.044	false
2019-07-16T19:45Z	0.044	false
2019-07-16T19:30Z	0.043	false
2019-07-16T19:15Z	0.042	false
2019-07-16T19:00Z	0.042	false
2019-07-16T18:45Z	0.04	false
2019-07-16T18:30Z	0.04	false
2019-07-16T18:15Z	0.039	false
2019-07-16T18:00Z	0.038	false
2019-07-16T17:45Z	0.037	false
2019-07-16T17:30Z	0.036	false
2019-07-16T17:15Z	0.035	false
2019-07-16T17:00Z	0.035	false
2019-07-16T16:45Z	0.034	false
2019-07-16T16:30Z	0.035	false
2019-07-16T16:15Z	0.035	false
2019-07-16T16:00Z	0.035	false
2019-07-16T15:45Z	0.035	false
2019-07-16T15:30Z	0.035	false
2019-07-16T15:15Z	0.035	false
2019-07-16T15:00Z	0.036	false
2019-07-16T14:45Z	0.035	false
2019-07-16T14:30Z	0.035	false
2019-07-16T14:15Z	0.035	false
2019-07-16T14:00Z	0.035	false
2019-07-16T13:45Z	0.036	false
2019-07-16T13:30Z	0.036	false
2019-07-16T13:15Z	0.036	false
2019-07-16T13:00Z	0.036	false
2019-07-16T12:45Z	0.036	false
2019-07-16T12:30Z	0.036	false
2019-07-16T12:15Z	0.036	false
2019-07-16T12:00Z	0.036	false
2019-07-16T11:45Z	0.036	false
2019-07-16T11:30Z	0.036	false
2019-07-16T11:15Z	0.036	false
2019-07-16T11:00Z	0.036	false
2019-07-16T10:45Z	0.036	false
2019-07-16T10:30Z	0.036	false
2019-07-16T10:15Z	0.036	false
2019-07-16T10:00Z	0.036	false
2019-07-16T09:45Z	0.036	false
2019-07-16T09:30Z	0.036	false
2019-07-16T09:15Z	0.036	false
2019-07-16T09:00Z	0.036	false
2019-07-16T08:45Z	0.036	false
2019-07-16T08:30Z	0.037	false
2019-07-16T08:15Z	0.037	false
2019-07-16T08:00Z	0.037	false
2019-07-16T07:45Z	0.037	false
2019-07-16T07:30Z	0.037	false
2019-07-16T07:15Z	0.037	false
2019-07-16T07:00Z	0.037	false
2019-07-16T06:45Z	0.038	false
2019-07-16T06:30Z	0.038	false
2019-07-16T06:15Z	0.038	false
2019-07-16T06:00Z	0.038	false
2019-07-16T05:45Z	0.038	false
2019-07-16T05:30Z	0.038	false
2019-07-16T05:15Z	0.038	false
2019-07-16T05:00Z	0.038	false
2019-07-16T04:45Z	0.038	false
2019-07-16T04:30Z	0.038	false
2019-07-16T04:15Z	0.038	false
2019-07-16T04:00Z	0.038	false
2019-07-16T03:45Z	0.038	false
2019-07-16T03:30Z	0.038	false
2019-07-16T03:15Z	0.039	false
2019-07-16T03:00Z	0.039	false
2019-07-16T02:45Z	0.039	false
2019-07-16T02:30Z	0.039	false
2019-07-16T02:15Z	0.039	false
2019-07-16T02:00Z	0.039	false
2019-07-16T01:45Z	0.039	false
2019-07-16T01:30Z	0.039	false
2019-07-16T01:15Z	0.04	false
2019-07-16T01:00Z	0.04	false
2019-07-16T00:45Z	0.04	false
2019-07-16T00:30Z	0.04	false
2019-07-16T00:15Z	0.04	false
2019-07-16T00:00Z	0.04	false
2019-07-15T23:45Z	0.04	false
2019-07-15T23:30Z	0.04	false
2019-07-15T23:15Z	0.039	false
2019-07-15T23:00Z	0.04	false
2019-07-15T22:45Z	0.04	false
2019-07-15T22:30Z	0.039	false
2019-07-15T22:15Z	0.039	false
2019-07-15T22:00Z	0.039	false
2019-07-15T21:45Z	0.039	false
2019-07-15T21:30Z	0.039	false
2019-07-15T21:15Z	0.038	false
2019-07-15T21:00Z	0.037	false
2019-07-15T20:45Z	0.036	false
2019-07-15T20:30Z	0.036	false
2019-07-15T20:15Z	0.035	false
2019-07-15T20:00Z	0.035	false
2019-07-15T19:45Z	0.034	false
2019-07-15T19:30Z	0.034	false
2019-07-15T19:15Z	0.034	false
2019-07-15T19:00Z	0.034	false
2019-07-15T18:45Z	0.034	false
2019-07-15T18:30Z	0.034	false
2019-07-15T18:15Z	0.034	false
2019-07-15T18:00Z	0.035	false
2019-07-15T17:45Z	0.035	false
2019-07-15T17:30Z	0.035	false
2019-07-15T17:15Z	0.035	false
2019-07-15T17:00Z	0.035	false
2019-07-15T16:45Z	0.036	false
2019-07-15T16:30Z	0.036	false
2019-07-15T16:15Z	0.036	false
2019-07-15T16:00Z	0.036	false
2019-07-15T15:45Z	0.036	false
2019-07-15T15:30Z	0.036	false
2019-07-15T15:15Z	0.036	false
2019-07-15T15:00Z	0.036	false
2019-07-15T14:45Z	0.036	false
2019-07-15T14:30Z	0.036	false
2019-07-15T14:15Z	0.036	false
2019-07-15T14:00Z	0.037	false
2019-07-15T13:45Z	0.037	false
2019-07-15T13:30Z	0.037	false
2019-07-15T13:15Z	0.038	false
2019-07-15T13:00Z	0.038	false
2019-07-15T12:45Z	0.038	false
2019-07-15T12:30Z	0.038	false
2019-07-15T12:15Z	0.038	false
2019-07-15T12:00Z	0.039	false
2019-07-15T11:45Z	0.039	false
2019-07-15T11:30Z	0.039	false
2019-07-15T11:15Z	0.039	false
2019-07-15T11:00Z	0.04	false
2019-07-15T10:45Z	0.04	false
2019-07-15T10:30Z	0.04	false
2019-07-15T10:15Z	0.04	false
2019-07-15T10:00Z	0.04	false
2019-07-15T09:45Z	0.039	false
2019-07-15T09:30Z	0.039	false
2019-07-15T09:15Z	0.039	false
2019-07-15T09:00Z	0.039	false
2019-07-15T08:45Z	0.039	false
2019-07-15T08:30Z	0.039	false
2019-07-15T08:15Z	0.04	false
2019-07-15T08:00Z	0.04	false
2019-07-15T07:45Z	0.04	false
2019-07-15T07:30Z	0.039	false
2019-07-15T07:15Z	0.039	false
2019-07-15T07:00Z	0.039	false
2019-07-15T06:45Z	0.039	false
2019-07-15T06:30Z	0.039	false
2019-07-15T06:15Z	0.039	false
2019-07-15T06:00Z	0.039	false
2019-07-15T05:45Z	0.039	false
2019-07-15T05:30Z	0.039	false
2019-07-15T05:15Z	0.04	false
2019-07-15T05:00Z	0.04	false
2019-07-15T04:45Z	0.04	false

Forecast data

Key information

• Station name: Harlow, Elizabeth way
• Station ID: 7355
• River name: Canons Brook
• Typical range: 0.05m to 1.40m
• Highest level on record: 2.15m on 10 June 1993
• Site datum: 37.54mAOD (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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