River level Canons Brook at Harlow, Elizabeth way

Check for flood warnings in this area

Latest recorded level 0.24m at 5:30am Thursday 9 July 2020.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.90m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2020-07-09T04:30Z	0.242	false
2020-07-09T04:15Z	0.216	false
2020-07-09T04:00Z	0.223	false
2020-07-09T03:45Z	0.21	false
2020-07-09T03:30Z	0.218	false
2020-07-09T03:15Z	0.233	false
2020-07-09T03:00Z	0.244	false
2020-07-09T02:45Z	0.226	false
2020-07-09T02:30Z	0.18	false
2020-07-09T02:15Z	0.167	false
2020-07-09T02:00Z	0.158	false
2020-07-09T01:45Z	0.141	false
2020-07-09T01:30Z	0.129	false
2020-07-09T01:15Z	0.127	false
2020-07-09T01:00Z	0.126	false
2020-07-09T00:45Z	0.127	false
2020-07-09T00:30Z	0.129	false
2020-07-09T00:15Z	0.132	false
2020-07-09T00:00Z	0.134	false
2020-07-08T23:45Z	0.138	false
2020-07-08T23:30Z	0.14	false
2020-07-08T23:15Z	0.144	false
2020-07-08T23:00Z	0.148	false
2020-07-08T22:45Z	0.152	false
2020-07-08T22:30Z	0.156	false
2020-07-08T22:15Z	0.16	false
2020-07-08T22:00Z	0.164	false
2020-07-08T21:45Z	0.169	false
2020-07-08T21:30Z	0.174	false
2020-07-08T21:15Z	0.182	false
2020-07-08T21:00Z	0.192	false
2020-07-08T20:45Z	0.202	false
2020-07-08T20:30Z	0.206	false
2020-07-08T20:15Z	0.198	false
2020-07-08T20:00Z	0.176	false
2020-07-08T19:45Z	0.155	false
2020-07-08T19:30Z	0.147	false
2020-07-08T19:15Z	0.143	false
2020-07-08T19:00Z	0.139	false
2020-07-08T18:45Z	0.134	false
2020-07-08T18:30Z	0.128	false
2020-07-08T18:15Z	0.126	false
2020-07-08T18:00Z	0.128	false
2020-07-08T17:45Z	0.13	false
2020-07-08T17:30Z	0.132	false
2020-07-08T17:15Z	0.135	false
2020-07-08T17:00Z	0.138	false
2020-07-08T16:45Z	0.142	false
2020-07-08T16:30Z	0.146	false
2020-07-08T16:15Z	0.15	false
2020-07-08T16:00Z	0.152	false
2020-07-08T15:45Z	0.152	false
2020-07-08T15:30Z	0.152	false
2020-07-08T15:15Z	0.153	false
2020-07-08T15:00Z	0.154	false
2020-07-08T14:45Z	0.156	false
2020-07-08T14:30Z	0.163	false
2020-07-08T14:15Z	0.172	false
2020-07-08T14:00Z	0.182	false
2020-07-08T13:45Z	0.194	false
2020-07-08T13:30Z	0.199	false
2020-07-08T13:15Z	0.181	false
2020-07-08T13:00Z	0.169	false
2020-07-08T12:45Z	0.165	false
2020-07-08T12:30Z	0.173	false
2020-07-08T12:15Z	0.179	false
2020-07-08T12:00Z	0.145	false
2020-07-08T11:45Z	0.143	false
2020-07-08T11:30Z	0.147	false
2020-07-08T11:15Z	0.151	false
2020-07-08T11:00Z	0.156	false
2020-07-08T10:45Z	0.16	false
2020-07-08T10:30Z	0.166	false
2020-07-08T10:15Z	0.172	false
2020-07-08T10:00Z	0.177	false
2020-07-08T09:45Z	0.184	false
2020-07-08T09:30Z	0.192	false
2020-07-08T09:15Z	0.2	false
2020-07-08T09:00Z	0.208	false
2020-07-08T08:45Z	0.216	false
2020-07-08T08:30Z	0.224	false
2020-07-08T08:15Z	0.234	false
2020-07-08T08:00Z	0.246	false
2020-07-08T07:45Z	0.26	false
2020-07-08T07:30Z	0.28	false
2020-07-08T07:15Z	0.301	false
2020-07-08T07:00Z	0.32	false
2020-07-08T06:45Z	0.332	false
2020-07-08T06:30Z	0.333	false
2020-07-08T06:15Z	0.307	false
2020-07-08T06:00Z	0.274	false
2020-07-08T05:45Z	0.226	false
2020-07-08T05:30Z	0.203	false
2020-07-08T05:15Z	0.183	false
2020-07-08T05:00Z	0.17	false
2020-07-08T04:45Z	0.166	false
2020-07-08T04:30Z	0.168	false
2020-07-08T04:15Z	0.172	false
2020-07-08T04:00Z	0.179	false
2020-07-08T03:45Z	0.185	false
2020-07-08T03:30Z	0.192	false
2020-07-08T03:15Z	0.201	false
2020-07-08T03:00Z	0.208	false
2020-07-08T02:45Z	0.214	false
2020-07-08T02:30Z	0.221	false
2020-07-08T02:15Z	0.224	false
2020-07-08T02:00Z	0.226	false
2020-07-08T01:45Z	0.233	false
2020-07-08T01:30Z	0.235	false
2020-07-08T01:15Z	0.238	false
2020-07-08T01:00Z	0.242	false
2020-07-08T00:45Z	0.238	false
2020-07-08T00:30Z	0.245	false
2020-07-08T00:15Z	0.251	false
2020-07-08T00:00Z	0.249	false
2020-07-07T23:45Z	0.261	false
2020-07-07T23:30Z	0.261	false
2020-07-07T23:15Z	0.236	false
2020-07-07T23:00Z	0.201	false
2020-07-07T22:45Z	0.152	false
2020-07-07T22:30Z	0.142	false
2020-07-07T22:15Z	0.119	false
2020-07-07T22:00Z	0.093	false
2020-07-07T21:45Z	0.066	false
2020-07-07T21:30Z	0.061	false
2020-07-07T21:15Z	0.063	false
2020-07-07T21:00Z	0.06	false
2020-07-07T20:45Z	0.057	false
2020-07-07T20:30Z	0.057	false
2020-07-07T20:15Z	0.055	false
2020-07-07T20:00Z	0.048	false
2020-07-07T19:45Z	0.048	false
2020-07-07T19:30Z	0.048	false
2020-07-07T19:15Z	0.047	false
2020-07-07T19:00Z	0.047	false
2020-07-07T18:45Z	0.047	false
2020-07-07T18:30Z	0.047	false
2020-07-07T18:15Z	0.046	false
2020-07-07T18:00Z	0.046	false
2020-07-07T17:45Z	0.046	false
2020-07-07T17:30Z	0.046	false
2020-07-07T17:15Z	0.046	false
2020-07-07T17:00Z	0.046	false
2020-07-07T16:45Z	0.046	false
2020-07-07T16:30Z	0.046	false
2020-07-07T16:15Z	0.046	false
2020-07-07T16:00Z	0.046	false
2020-07-07T15:45Z	0.046	false
2020-07-07T15:30Z	0.046	false
2020-07-07T15:15Z	0.046	false
2020-07-07T15:00Z	0.046	false
2020-07-07T14:45Z	0.046	false
2020-07-07T14:30Z	0.046	false
2020-07-07T14:15Z	0.046	false
2020-07-07T14:00Z	0.046	false
2020-07-07T13:45Z	0.046	false
2020-07-07T13:30Z	0.046	false
2020-07-07T13:15Z	0.046	false
2020-07-07T13:00Z	0.045	false
2020-07-07T12:45Z	0.045	false
2020-07-07T12:30Z	0.045	false
2020-07-07T12:15Z	0.045	false
2020-07-07T12:00Z	0.045	false
2020-07-07T11:45Z	0.046	false
2020-07-07T11:30Z	0.045	false
2020-07-07T11:15Z	0.046	false
2020-07-07T11:00Z	0.046	false
2020-07-07T10:45Z	0.045	false
2020-07-07T10:30Z	0.046	false
2020-07-07T10:15Z	0.046	false
2020-07-07T10:00Z	0.046	false
2020-07-07T09:45Z	0.046	false
2020-07-07T09:30Z	0.046	false
2020-07-07T09:15Z	0.046	false
2020-07-07T09:00Z	0.045	false
2020-07-07T08:45Z	0.045	false
2020-07-07T08:30Z	0.046	false
2020-07-07T08:15Z	0.046	false
2020-07-07T08:00Z	0.046	false
2020-07-07T07:45Z	0.046	false
2020-07-07T07:30Z	0.046	false
2020-07-07T07:15Z	0.046	false
2020-07-07T07:00Z	0.047	false
2020-07-07T06:45Z	0.047	false
2020-07-07T06:30Z	0.047	false
2020-07-07T06:15Z	0.047	false
2020-07-07T06:00Z	0.047	false
2020-07-07T05:45Z	0.047	false
2020-07-07T05:30Z	0.047	false
2020-07-07T05:15Z	0.047	false
2020-07-07T05:00Z	0.047	false
2020-07-07T04:45Z	0.047	false
2020-07-07T04:30Z	0.047	false
2020-07-07T04:15Z	0.047	false
2020-07-07T04:00Z	0.047	false
2020-07-07T03:45Z	0.048	false
2020-07-07T03:30Z	0.048	false
2020-07-07T03:15Z	0.048	false
2020-07-07T03:00Z	0.048	false
2020-07-07T02:45Z	0.048	false
2020-07-07T02:30Z	0.048	false
2020-07-07T02:15Z	0.048	false
2020-07-07T02:00Z	0.048	false
2020-07-07T01:45Z	0.048	false
2020-07-07T01:30Z	0.048	false
2020-07-07T01:15Z	0.048	false
2020-07-07T01:00Z	0.048	false
2020-07-07T00:45Z	0.048	false
2020-07-07T00:30Z	0.048	false
2020-07-07T00:15Z	0.048	false
2020-07-07T00:00Z	0.048	false
2020-07-06T23:45Z	0.048	false
2020-07-06T23:30Z	0.048	false
2020-07-06T23:15Z	0.048	false
2020-07-06T23:00Z	0.047	false
2020-07-06T22:45Z	0.047	false
2020-07-06T22:30Z	0.047	false
2020-07-06T22:15Z	0.047	false
2020-07-06T22:00Z	0.047	false
2020-07-06T21:45Z	0.047	false
2020-07-06T21:30Z	0.047	false
2020-07-06T21:15Z	0.047	false
2020-07-06T21:00Z	0.047	false
2020-07-06T20:45Z	0.047	false
2020-07-06T20:30Z	0.047	false
2020-07-06T20:15Z	0.047	false
2020-07-06T20:00Z	0.047	false
2020-07-06T19:45Z	0.047	false
2020-07-06T19:30Z	0.047	false
2020-07-06T19:15Z	0.047	false
2020-07-06T19:00Z	0.047	false
2020-07-06T18:45Z	0.047	false
2020-07-06T18:30Z	0.047	false
2020-07-06T18:15Z	0.046	false
2020-07-06T18:00Z	0.046	false
2020-07-06T17:45Z	0.046	false
2020-07-06T17:30Z	0.046	false
2020-07-06T17:15Z	0.046	false
2020-07-06T17:00Z	0.046	false
2020-07-06T16:45Z	0.046	false
2020-07-06T16:30Z	0.046	false
2020-07-06T16:15Z	0.046	false
2020-07-06T16:00Z	0.046	false
2020-07-06T15:45Z	0.046	false
2020-07-06T15:30Z	0.046	false
2020-07-06T15:15Z	0.046	false
2020-07-06T15:00Z	0.046	false
2020-07-06T14:45Z	0.046	false
2020-07-06T14:30Z	0.046	false
2020-07-06T14:15Z	0.046	false
2020-07-06T14:00Z	0.046	false
2020-07-06T13:45Z	0.047	false
2020-07-06T13:30Z	0.047	false
2020-07-06T13:15Z	0.047	false
2020-07-06T13:00Z	0.047	false
2020-07-06T12:45Z	0.047	false
2020-07-06T12:30Z	0.047	false
2020-07-06T12:15Z	0.047	false
2020-07-06T12:00Z	0.047	false
2020-07-06T11:45Z	0.047	false
2020-07-06T11:30Z	0.047	false
2020-07-06T11:15Z	0.047	false
2020-07-06T11:00Z	0.047	false
2020-07-06T10:45Z	0.047	false
2020-07-06T10:30Z	0.047	false
2020-07-06T10:15Z	0.047	false
2020-07-06T10:00Z	0.047	false
2020-07-06T09:45Z	0.048	false
2020-07-06T09:30Z	0.047	false
2020-07-06T09:15Z	0.048	false
2020-07-06T09:00Z	0.048	false
2020-07-06T08:45Z	0.048	false
2020-07-06T08:30Z	0.048	false
2020-07-06T08:15Z	0.048	false
2020-07-06T08:00Z	0.048	false
2020-07-06T07:45Z	0.048	false
2020-07-06T07:30Z	0.048	false
2020-07-06T07:15Z	0.048	false
2020-07-06T07:00Z	0.048	false
2020-07-06T06:45Z	0.049	false
2020-07-06T06:30Z	0.049	false
2020-07-06T06:15Z	0.049	false
2020-07-06T06:00Z	0.049	false
2020-07-06T05:45Z	0.049	false
2020-07-06T05:30Z	0.049	false
2020-07-06T05:15Z	0.05	false
2020-07-06T05:00Z	0.05	false
2020-07-06T04:45Z	0.05	false
2020-07-06T04:30Z	0.05	false
2020-07-06T04:15Z	0.05	false
2020-07-06T04:00Z	0.05	false
2020-07-06T03:45Z	0.051	false
2020-07-06T03:30Z	0.051	false
2020-07-06T03:15Z	0.051	false
2020-07-06T03:00Z	0.051	false
2020-07-06T02:45Z	0.051	false
2020-07-06T02:30Z	0.051	false
2020-07-06T02:15Z	0.051	false
2020-07-06T02:00Z	0.052	false
2020-07-06T01:45Z	0.052	false
2020-07-06T01:30Z	0.052	false
2020-07-06T01:15Z	0.052	false
2020-07-06T01:00Z	0.052	false
2020-07-06T00:45Z	0.052	false
2020-07-06T00:30Z	0.052	false
2020-07-06T00:15Z	0.052	false
2020-07-06T00:00Z	0.053	false
2020-07-05T23:45Z	0.053	false
2020-07-05T23:30Z	0.053	false
2020-07-05T23:15Z	0.053	false
2020-07-05T23:00Z	0.053	false
2020-07-05T22:45Z	0.054	false
2020-07-05T22:30Z	0.054	false
2020-07-05T22:15Z	0.054	false
2020-07-05T22:00Z	0.054	false
2020-07-05T21:45Z	0.054	false
2020-07-05T21:30Z	0.054	false
2020-07-05T21:15Z	0.054	false
2020-07-05T21:00Z	0.054	false
2020-07-05T20:45Z	0.054	false
2020-07-05T20:30Z	0.054	false
2020-07-05T20:15Z	0.054	false
2020-07-05T20:00Z	0.053	false
2020-07-05T19:45Z	0.053	false
2020-07-05T19:30Z	0.053	false
2020-07-05T19:15Z	0.053	false
2020-07-05T19:00Z	0.052	false
2020-07-05T18:45Z	0.052	false
2020-07-05T18:30Z	0.051	false
2020-07-05T18:15Z	0.05	false
2020-07-05T18:00Z	0.051	false
2020-07-05T17:45Z	0.051	false
2020-07-05T17:30Z	0.051	false
2020-07-05T17:15Z	0.051	false
2020-07-05T17:00Z	0.051	false
2020-07-05T16:45Z	0.051	false
2020-07-05T16:30Z	0.051	false
2020-07-05T16:15Z	0.051	false
2020-07-05T16:00Z	0.052	false
2020-07-05T15:45Z	0.052	false
2020-07-05T15:30Z	0.052	false
2020-07-05T15:15Z	0.052	false
2020-07-05T15:00Z	0.052	false
2020-07-05T14:45Z	0.053	false
2020-07-05T14:30Z	0.053	false
2020-07-05T14:15Z	0.053	false
2020-07-05T14:00Z	0.053	false
2020-07-05T13:45Z	0.052	false
2020-07-05T13:30Z	0.052	false
2020-07-05T13:15Z	0.052	false
2020-07-05T13:00Z	0.052	false
2020-07-05T12:45Z	0.053	false
2020-07-05T12:30Z	0.053	false
2020-07-05T12:15Z	0.054	false
2020-07-05T12:00Z	0.055	false
2020-07-05T11:45Z	0.055	false
2020-07-05T11:30Z	0.056	false
2020-07-05T11:15Z	0.055	false
2020-07-05T11:00Z	0.055	false
2020-07-05T10:45Z	0.055	false
2020-07-05T10:30Z	0.054	false
2020-07-05T10:15Z	0.053	false
2020-07-05T10:00Z	0.054	false
2020-07-05T09:45Z	0.054	false
2020-07-05T09:30Z	0.054	false
2020-07-05T09:15Z	0.054	false
2020-07-05T09:00Z	0.054	false
2020-07-05T08:45Z	0.055	false
2020-07-05T08:30Z	0.056	false
2020-07-05T08:15Z	0.057	false
2020-07-05T08:00Z	0.06	false
2020-07-05T07:45Z	0.06	false
2020-07-05T07:30Z	0.062	false
2020-07-05T07:15Z	0.061	false
2020-07-05T07:00Z	0.056	false
2020-07-05T06:45Z	0.055	false
2020-07-05T06:30Z	0.053	false
2020-07-05T06:15Z	0.053	false
2020-07-05T06:00Z	0.053	false
2020-07-05T05:45Z	0.053	false
2020-07-05T05:30Z	0.053	false
2020-07-05T05:15Z	0.053	false
2020-07-05T05:00Z	0.053	false
2020-07-05T04:45Z	0.053	false
2020-07-05T04:30Z	0.053	false
2020-07-05T04:15Z	0.053	false
2020-07-05T04:00Z	0.053	false
2020-07-05T03:45Z	0.053	false
2020-07-05T03:30Z	0.054	false
2020-07-05T03:15Z	0.054	false
2020-07-05T03:00Z	0.054	false
2020-07-05T02:45Z	0.054	false
2020-07-05T02:30Z	0.053	false
2020-07-05T02:15Z	0.054	false
2020-07-05T02:00Z	0.054	false
2020-07-05T01:45Z	0.054	false
2020-07-05T01:30Z	0.054	false
2020-07-05T01:15Z	0.054	false
2020-07-05T01:00Z	0.054	false
2020-07-05T00:45Z	0.054	false
2020-07-05T00:30Z	0.054	false
2020-07-05T00:15Z	0.055	false
2020-07-05T00:00Z	0.054	false
2020-07-04T23:45Z	0.055	false
2020-07-04T23:30Z	0.055	false
2020-07-04T23:15Z	0.055	false
2020-07-04T23:00Z	0.055	false
2020-07-04T22:45Z	0.055	false
2020-07-04T22:30Z	0.055	false
2020-07-04T22:15Z	0.055	false
2020-07-04T22:00Z	0.055	false
2020-07-04T21:45Z	0.055	false
2020-07-04T21:30Z	0.054	false
2020-07-04T21:15Z	0.054	false
2020-07-04T21:00Z	0.054	false
2020-07-04T20:45Z	0.053	false
2020-07-04T20:30Z	0.053	false
2020-07-04T20:15Z	0.053	false
2020-07-04T20:00Z	0.053	false
2020-07-04T19:45Z	0.053	false
2020-07-04T19:30Z	0.053	false
2020-07-04T19:15Z	0.053	false
2020-07-04T19:00Z	0.053	false
2020-07-04T18:45Z	0.053	false
2020-07-04T18:30Z	0.053	false
2020-07-04T18:15Z	0.053	false
2020-07-04T18:00Z	0.053	false
2020-07-04T17:45Z	0.053	false
2020-07-04T17:30Z	0.053	false
2020-07-04T17:15Z	0.053	false
2020-07-04T17:00Z	0.053	false
2020-07-04T16:45Z	0.053	false
2020-07-04T16:30Z	0.053	false
2020-07-04T16:15Z	0.053	false
2020-07-04T16:00Z	0.053	false
2020-07-04T15:45Z	0.053	false
2020-07-04T15:30Z	0.054	false
2020-07-04T15:15Z	0.053	false
2020-07-04T15:00Z	0.054	false
2020-07-04T14:45Z	0.054	false
2020-07-04T14:30Z	0.054	false
2020-07-04T14:15Z	0.055	false
2020-07-04T14:00Z	0.054	false
2020-07-04T13:45Z	0.054	false
2020-07-04T13:30Z	0.055	false
2020-07-04T13:15Z	0.055	false
2020-07-04T13:00Z	0.055	false
2020-07-04T12:45Z	0.055	false
2020-07-04T12:30Z	0.055	false
2020-07-04T12:15Z	0.055	false
2020-07-04T12:00Z	0.056	false
2020-07-04T11:45Z	0.056	false
2020-07-04T11:30Z	0.056	false
2020-07-04T11:15Z	0.056	false
2020-07-04T11:00Z	0.056	false
2020-07-04T10:45Z	0.056	false
2020-07-04T10:30Z	0.056	false
2020-07-04T10:15Z	0.057	false
2020-07-04T10:00Z	0.057	false
2020-07-04T09:45Z	0.058	false
2020-07-04T09:30Z	0.058	false
2020-07-04T09:15Z	0.058	false
2020-07-04T09:00Z	0.058	false
2020-07-04T08:45Z	0.058	false
2020-07-04T08:30Z	0.058	false
2020-07-04T08:15Z	0.059	false
2020-07-04T08:00Z	0.059	false
2020-07-04T07:45Z	0.06	false
2020-07-04T07:30Z	0.06	false
2020-07-04T07:15Z	0.06	false
2020-07-04T07:00Z	0.06	false
2020-07-04T06:45Z	0.06	false
2020-07-04T06:30Z	0.061	false
2020-07-04T06:15Z	0.061	false
2020-07-04T06:00Z	0.061	false
2020-07-04T05:45Z	0.062	false
2020-07-04T05:30Z	0.062	false
2020-07-04T05:15Z	0.062	false
2020-07-04T05:00Z	0.063	false
2020-07-04T04:45Z	0.063	false

Forecast data

Key information

• Station name: Harlow, Elizabeth way
• Station ID: 7355
• River name: Canons Brook
• Typical range: 0.05m to 1.90m
• 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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