River level Canons Brook at Harlow, Elizabeth way

Check for flood warnings in this area

Latest recorded level 0.07m at 12:00pm Thursday 21 March 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
• Show highest recorded level

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Observed data

DateTime	Value	Error
2019-03-21T12:00Z	0.072	false
2019-03-21T11:45Z	0.072	false
2019-03-21T11:30Z	0.072	false
2019-03-21T11:15Z	0.072	false
2019-03-21T11:00Z	0.072	false
2019-03-21T10:45Z	0.072	false
2019-03-21T10:30Z	0.072	false
2019-03-21T10:15Z	0.072	false
2019-03-21T10:00Z	0.072	false
2019-03-21T09:45Z	0.072	false
2019-03-21T09:30Z	0.072	false
2019-03-21T09:15Z	0.072	false
2019-03-21T09:00Z	0.072	false
2019-03-21T08:45Z	0.072	false
2019-03-21T08:30Z	0.072	false
2019-03-21T08:15Z	0.072	false
2019-03-21T08:00Z	0.072	false
2019-03-21T07:45Z	0.072	false
2019-03-21T07:30Z	0.072	false
2019-03-21T07:15Z	0.072	false
2019-03-21T07:00Z	0.072	false
2019-03-21T06:45Z	0.072	false
2019-03-21T06:30Z	0.072	false
2019-03-21T06:15Z	0.072	false
2019-03-21T06:00Z	0.072	false
2019-03-21T05:45Z	0.073	false
2019-03-21T05:30Z	0.073	false
2019-03-21T05:15Z	0.073	false
2019-03-21T05:00Z	0.073	false
2019-03-21T04:45Z	0.073	false
2019-03-21T04:30Z	0.073	false
2019-03-21T04:15Z	0.073	false
2019-03-21T04:00Z	0.073	false
2019-03-21T03:45Z	0.074	false
2019-03-21T03:30Z	0.074	false
2019-03-21T03:15Z	0.074	false
2019-03-21T03:00Z	0.074	false
2019-03-21T02:45Z	0.074	false
2019-03-21T02:30Z	0.074	false
2019-03-21T02:15Z	0.074	false
2019-03-21T02:00Z	0.074	false
2019-03-21T01:45Z	0.074	false
2019-03-21T01:30Z	0.074	false
2019-03-21T01:15Z	0.074	false
2019-03-21T01:00Z	0.075	false
2019-03-21T00:45Z	0.075	false
2019-03-21T00:30Z	0.075	false
2019-03-21T00:15Z	0.075	false
2019-03-21T00:00Z	0.075	false
2019-03-20T23:45Z	0.075	false
2019-03-20T23:30Z	0.075	false
2019-03-20T23:15Z	0.076	false
2019-03-20T23:00Z	0.076	false
2019-03-20T22:45Z	0.076	false
2019-03-20T22:30Z	0.076	false
2019-03-20T22:15Z	0.076	false
2019-03-20T22:00Z	0.076	false
2019-03-20T21:45Z	0.076	false
2019-03-20T21:30Z	0.076	false
2019-03-20T21:15Z	0.076	false
2019-03-20T21:00Z	0.076	false
2019-03-20T20:45Z	0.076	false
2019-03-20T20:30Z	0.076	false
2019-03-20T20:15Z	0.076	false
2019-03-20T20:00Z	0.076	false
2019-03-20T19:45Z	0.076	false
2019-03-20T19:30Z	0.076	false
2019-03-20T19:15Z	0.076	false
2019-03-20T19:00Z	0.076	false
2019-03-20T18:45Z	0.076	false
2019-03-20T18:30Z	0.076	false
2019-03-20T18:15Z	0.076	false
2019-03-20T18:00Z	0.076	false
2019-03-20T17:45Z	0.076	false
2019-03-20T17:30Z	0.076	false
2019-03-20T17:15Z	0.076	false
2019-03-20T17:00Z	0.076	false
2019-03-20T16:45Z	0.076	false
2019-03-20T16:30Z	0.076	false
2019-03-20T16:15Z	0.076	false
2019-03-20T16:00Z	0.076	false
2019-03-20T15:45Z	0.077	false
2019-03-20T15:30Z	0.077	false
2019-03-20T15:15Z	0.077	false
2019-03-20T15:00Z	0.077	false
2019-03-20T14:45Z	0.077	false
2019-03-20T14:30Z	0.077	false
2019-03-20T14:15Z	0.077	false
2019-03-20T12:00Z	0.077	false
2019-03-20T11:45Z	0.077	false
2019-03-20T11:30Z	0.078	false
2019-03-20T11:15Z	0.077	false
2019-03-20T11:00Z	0.077	false
2019-03-20T10:45Z	0.077	false
2019-03-20T10:30Z	0.078	false
2019-03-20T10:15Z	0.078	false
2019-03-20T10:00Z	0.078	false
2019-03-20T09:45Z	0.078	false
2019-03-20T09:30Z	0.078	false
2019-03-20T09:15Z	0.078	false
2019-03-20T09:00Z	0.078	false
2019-03-20T08:45Z	0.078	false
2019-03-20T08:30Z	0.078	false
2019-03-20T08:15Z	0.078	false
2019-03-20T08:00Z	0.078	false
2019-03-20T07:45Z	0.078	false
2019-03-20T07:30Z	0.078	false
2019-03-20T07:15Z	0.078	false
2019-03-20T07:00Z	0.078	false
2019-03-20T06:45Z	0.079	false
2019-03-20T06:30Z	0.079	false
2019-03-20T06:15Z	0.079	false
2019-03-20T06:00Z	0.079	false
2019-03-20T05:45Z	0.079	false
2019-03-20T05:30Z	0.079	false
2019-03-20T05:15Z	0.079	false
2019-03-20T05:00Z	0.079	false
2019-03-20T04:45Z	0.08	false
2019-03-20T04:30Z	0.08	false
2019-03-20T04:15Z	0.08	false
2019-03-20T04:00Z	0.08	false
2019-03-20T03:45Z	0.08	false
2019-03-20T03:30Z	0.08	false
2019-03-20T03:15Z	0.08	false
2019-03-20T03:00Z	0.08	false
2019-03-20T02:45Z	0.08	false
2019-03-20T02:30Z	0.08	false
2019-03-20T02:15Z	0.08	false
2019-03-20T02:00Z	0.08	false
2019-03-20T01:45Z	0.08	false
2019-03-20T01:30Z	0.081	false
2019-03-20T01:15Z	0.081	false
2019-03-20T01:00Z	0.081	false
2019-03-20T00:45Z	0.081	false
2019-03-20T00:30Z	0.081	false
2019-03-20T00:15Z	0.082	false
2019-03-20T00:00Z	0.082	false
2019-03-19T23:45Z	0.082	false
2019-03-19T23:30Z	0.082	false
2019-03-19T23:15Z	0.082	false
2019-03-19T23:00Z	0.083	false
2019-03-19T22:45Z	0.083	false
2019-03-19T22:30Z	0.083	false
2019-03-19T22:15Z	0.083	false
2019-03-19T22:00Z	0.084	false
2019-03-19T21:45Z	0.084	false
2019-03-19T21:30Z	0.084	false
2019-03-19T21:15Z	0.084	false
2019-03-19T21:00Z	0.084	false
2019-03-19T20:45Z	0.084	false
2019-03-19T20:30Z	0.084	false
2019-03-19T20:15Z	0.084	false
2019-03-19T20:00Z	0.085	false
2019-03-19T19:45Z	0.085	false
2019-03-19T19:30Z	0.085	false
2019-03-19T19:15Z	0.085	false
2019-03-19T19:00Z	0.085	false
2019-03-19T18:45Z	0.085	false
2019-03-19T18:30Z	0.085	false
2019-03-19T18:15Z	0.085	false
2019-03-19T04:30Z	0.09	false
2019-03-19T04:15Z	0.09	false
2019-03-19T04:00Z	0.09	false
2019-03-19T03:45Z	0.09	false
2019-03-19T03:30Z	0.091	false
2019-03-19T03:15Z	0.091	false
2019-03-19T03:00Z	0.091	false
2019-03-19T02:45Z	0.091	false
2019-03-19T02:30Z	0.092	false
2019-03-19T02:15Z	0.092	false
2019-03-19T02:00Z	0.092	false
2019-03-19T01:45Z	0.092	false
2019-03-19T01:30Z	0.092	false
2019-03-19T01:15Z	0.092	false
2019-03-19T01:00Z	0.092	false
2019-03-19T00:45Z	0.093	false
2019-03-19T00:30Z	0.093	false
2019-03-19T00:15Z	0.094	false
2019-03-19T00:00Z	0.094	false
2019-03-18T23:45Z	0.094	false
2019-03-18T23:30Z	0.095	false
2019-03-18T23:15Z	0.095	false
2019-03-18T23:00Z	0.095	false
2019-03-18T22:45Z	0.096	false
2019-03-18T22:30Z	0.096	false
2019-03-18T22:15Z	0.096	false
2019-03-18T22:00Z	0.096	false
2019-03-18T21:45Z	0.097	false
2019-03-18T21:30Z	0.097	false
2019-03-18T21:15Z	0.097	false
2019-03-18T21:00Z	0.097	false
2019-03-18T20:45Z	0.098	false
2019-03-18T20:30Z	0.098	false
2019-03-18T20:15Z	0.098	false
2019-03-18T20:00Z	0.098	false
2019-03-18T19:45Z	0.099	false
2019-03-18T19:30Z	0.099	false
2019-03-18T19:15Z	0.099	false
2019-03-18T19:00Z	0.099	false
2019-03-18T18:45Z	0.1	false
2019-03-18T18:30Z	0.1	false
2019-03-18T18:15Z	0.1	false
2019-03-18T18:00Z	0.1	false
2019-03-18T17:45Z	0.1	false
2019-03-18T17:30Z	0.1	false
2019-03-18T17:15Z	0.101	false
2019-03-18T17:00Z	0.101	false
2019-03-18T16:45Z	0.101	false
2019-03-18T16:30Z	0.101	false
2019-03-18T16:15Z	0.102	false
2019-03-18T16:00Z	0.102	false
2019-03-18T15:45Z	0.102	false
2019-03-18T15:30Z	0.102	false
2019-03-18T15:15Z	0.102	false
2019-03-18T15:00Z	0.102	false
2019-03-18T14:45Z	0.103	false
2019-03-18T14:30Z	0.103	false
2019-03-18T14:15Z	0.104	false
2019-03-18T14:00Z	0.104	false
2019-03-18T13:45Z	0.106	false
2019-03-18T13:30Z	0.106	false
2019-03-18T13:15Z	0.106	false
2019-03-18T13:00Z	0.105	false
2019-03-18T12:45Z	0.105	false
2019-03-18T12:30Z	0.105	false
2019-03-18T12:15Z	0.105	false
2019-03-18T12:00Z	0.105	false
2019-03-18T11:45Z	0.106	false
2019-03-18T11:30Z	0.106	false
2019-03-18T11:15Z	0.106	false
2019-03-18T11:00Z	0.106	false
2019-03-18T10:45Z	0.107	false
2019-03-18T10:30Z	0.107	false
2019-03-18T10:15Z	0.107	false
2019-03-18T10:00Z	0.107	false
2019-03-18T09:45Z	0.108	false
2019-03-18T09:30Z	0.108	false
2019-03-18T09:15Z	0.108	false
2019-03-18T09:00Z	0.108	false
2019-03-18T08:45Z	0.109	false
2019-03-18T08:30Z	0.109	false
2019-03-18T08:15Z	0.11	false
2019-03-18T08:00Z	0.11	false
2019-03-18T07:45Z	0.11	false
2019-03-18T07:30Z	0.111	false
2019-03-18T07:15Z	0.111	false
2019-03-18T07:00Z	0.112	false
2019-03-18T06:45Z	0.112	false
2019-03-18T06:30Z	0.112	false
2019-03-18T06:15Z	0.113	false
2019-03-18T06:00Z	0.113	false
2019-03-18T05:45Z	0.113	false
2019-03-18T05:30Z	0.114	false
2019-03-18T05:15Z	0.114	false
2019-03-18T05:00Z	0.115	false
2019-03-18T04:45Z	0.115	false
2019-03-18T04:30Z	0.116	false
2019-03-18T04:15Z	0.116	false
2019-03-18T04:00Z	0.116	false
2019-03-18T03:45Z	0.116	false
2019-03-18T03:30Z	0.117	false
2019-03-18T03:15Z	0.118	false
2019-03-18T03:00Z	0.118	false
2019-03-18T02:45Z	0.119	false
2019-03-18T02:30Z	0.119	false
2019-03-18T02:15Z	0.12	false
2019-03-18T02:00Z	0.12	false
2019-03-18T01:45Z	0.12	false
2019-03-18T01:30Z	0.121	false
2019-03-18T01:15Z	0.122	false
2019-03-18T01:00Z	0.122	false
2019-03-18T00:45Z	0.123	false
2019-03-18T00:30Z	0.124	false
2019-03-18T00:15Z	0.124	false
2019-03-18T00:00Z	0.124	false
2019-03-17T23:45Z	0.125	false
2019-03-17T23:30Z	0.126	false
2019-03-17T23:15Z	0.128	false
2019-03-17T23:00Z	0.128	false
2019-03-17T22:45Z	0.129	false
2019-03-17T22:30Z	0.13	false
2019-03-17T22:15Z	0.131	false
2019-03-17T22:00Z	0.132	false
2019-03-17T21:45Z	0.132	false
2019-03-17T21:30Z	0.133	false
2019-03-17T21:15Z	0.134	false
2019-03-17T21:00Z	0.135	false
2019-03-17T20:45Z	0.136	false
2019-03-17T20:30Z	0.137	false
2019-03-17T20:15Z	0.138	false
2019-03-17T20:00Z	0.139	false
2019-03-17T19:45Z	0.14	false
2019-03-17T19:30Z	0.141	false
2019-03-17T19:15Z	0.142	false
2019-03-17T19:00Z	0.144	false
2019-03-17T18:45Z	0.146	false
2019-03-17T18:30Z	0.148	false
2019-03-17T18:15Z	0.152	false
2019-03-17T18:00Z	0.155	false
2019-03-17T17:45Z	0.159	false
2019-03-17T17:30Z	0.163	false
2019-03-17T17:15Z	0.166	false
2019-03-17T17:00Z	0.167	false
2019-03-17T16:45Z	0.169	false
2019-03-17T16:30Z	0.168	false
2019-03-17T16:15Z	0.158	false
2019-03-17T16:00Z	0.148	false
2019-03-17T15:45Z	0.143	false
2019-03-17T15:30Z	0.138	false
2019-03-17T15:15Z	0.138	false
2019-03-17T15:00Z	0.137	false
2019-03-17T14:45Z	0.136	false
2019-03-17T14:30Z	0.137	false
2019-03-17T14:15Z	0.138	false
2019-03-17T14:00Z	0.138	false
2019-03-17T13:45Z	0.138	false
2019-03-17T13:30Z	0.139	false
2019-03-17T13:15Z	0.14	false
2019-03-17T13:00Z	0.14	false
2019-03-17T12:45Z	0.141	false
2019-03-17T12:30Z	0.142	false
2019-03-17T12:15Z	0.143	false
2019-03-17T12:00Z	0.144	false
2019-03-17T11:45Z	0.144	false
2019-03-17T11:30Z	0.146	false
2019-03-17T11:15Z	0.146	false
2019-03-17T11:00Z	0.147	false
2019-03-17T10:45Z	0.147	false
2019-03-17T10:30Z	0.148	false
2019-03-17T10:15Z	0.149	false
2019-03-17T10:00Z	0.15	false
2019-03-17T09:45Z	0.15	false
2019-03-17T09:30Z	0.152	false
2019-03-17T09:15Z	0.152	false
2019-03-17T09:00Z	0.153	false
2019-03-17T08:45Z	0.154	false
2019-03-17T08:30Z	0.156	false
2019-03-17T08:15Z	0.156	false
2019-03-17T08:00Z	0.158	false
2019-03-17T07:45Z	0.159	false
2019-03-17T07:30Z	0.16	false
2019-03-17T07:15Z	0.162	false
2019-03-17T07:00Z	0.163	false
2019-03-17T06:45Z	0.165	false
2019-03-17T06:30Z	0.166	false
2019-03-17T06:15Z	0.168	false
2019-03-17T06:00Z	0.169	false
2019-03-17T05:45Z	0.171	false
2019-03-17T05:30Z	0.174	false
2019-03-17T05:15Z	0.176	false
2019-03-17T05:00Z	0.178	false
2019-03-17T04:45Z	0.181	false
2019-03-17T04:30Z	0.184	false
2019-03-17T04:15Z	0.187	false
2019-03-17T04:00Z	0.189	false
2019-03-17T03:45Z	0.192	false
2019-03-17T03:30Z	0.195	false
2019-03-17T03:15Z	0.198	false
2019-03-17T03:00Z	0.201	false
2019-03-17T02:45Z	0.205	false
2019-03-17T02:30Z	0.208	false
2019-03-17T02:15Z	0.212	false
2019-03-17T02:00Z	0.219	false
2019-03-17T01:45Z	0.228	false
2019-03-17T01:30Z	0.24	false
2019-03-17T01:15Z	0.253	false
2019-03-17T01:00Z	0.258	false
2019-03-17T00:45Z	0.254	false
2019-03-17T00:30Z	0.248	false
2019-03-17T00:15Z	0.244	false
2019-03-17T00:00Z	0.261	false
2019-03-16T23:45Z	0.271	false
2019-03-16T23:30Z	0.27	false
2019-03-16T23:15Z	0.288	false
2019-03-16T23:00Z	0.308	false
2019-03-16T22:45Z	0.321	false
2019-03-16T22:30Z	0.305	false
2019-03-16T22:15Z	0.193	false
2019-03-16T22:00Z	0.173	false
2019-03-16T21:45Z	0.178	false
2019-03-16T21:30Z	0.155	false
2019-03-16T21:15Z	0.143	false
2019-03-16T21:00Z	0.124	false
2019-03-16T20:45Z	0.118	false
2019-03-16T20:30Z	0.116	false
2019-03-16T20:15Z	0.115	false
2019-03-16T20:00Z	0.116	false
2019-03-16T19:45Z	0.116	false
2019-03-16T19:30Z	0.116	false
2019-03-16T19:15Z	0.116	false
2019-03-16T19:00Z	0.116	false
2019-03-16T18:45Z	0.116	false
2019-03-16T18:30Z	0.117	false
2019-03-16T18:15Z	0.117	false
2019-03-16T18:00Z	0.117	false
2019-03-16T17:45Z	0.118	false
2019-03-16T17:30Z	0.118	false
2019-03-16T17:15Z	0.118	false
2019-03-16T17:00Z	0.117	false
2019-03-16T16:45Z	0.119	false
2019-03-16T16:30Z	0.118	false
2019-03-16T16:15Z	0.119	false
2019-03-16T16:00Z	0.119	false
2019-03-16T15:45Z	0.118	false
2019-03-16T15:30Z	0.119	false
2019-03-16T15:15Z	0.119	false
2019-03-16T15:00Z	0.119	false
2019-03-16T14:45Z	0.12	false
2019-03-16T14:30Z	0.12	false
2019-03-16T14:15Z	0.12	false
2019-03-16T14:00Z	0.12	false
2019-03-16T13:45Z	0.122	false
2019-03-16T13:30Z	0.122	false
2019-03-16T13:15Z	0.122	false
2019-03-16T13:00Z	0.122	false
2019-03-16T12:45Z	0.122	false
2019-03-16T12:30Z	0.123	false
2019-03-16T12:15Z	0.124	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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