River level River Colne at Stanwell Mill

Check for flood warnings in this area

Latest recorded level 0.68m at 7:00pm Wednesday 28 July 2021.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.12m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2021-07-28T18:00Z	0.675	false
2021-07-28T17:45Z	0.677	false
2021-07-28T17:30Z	0.674	false
2021-07-28T17:15Z	0.676	false
2021-07-28T17:00Z	0.671	false
2021-07-28T16:45Z	0.673	false
2021-07-28T16:30Z	0.67	false
2021-07-28T16:15Z	0.671	false
2021-07-28T16:00Z	0.669	false
2021-07-28T15:45Z	0.67	false
2021-07-28T15:30Z	0.666	false
2021-07-28T15:15Z	0.669	false
2021-07-28T15:00Z	0.666	false
2021-07-28T14:45Z	0.667	false
2021-07-28T14:30Z	0.664	false
2021-07-28T14:15Z	0.665	false
2021-07-28T14:00Z	0.663	false
2021-07-28T13:45Z	0.664	false
2021-07-28T13:30Z	0.661	false
2021-07-28T13:15Z	0.663	false
2021-07-28T13:00Z	0.661	false
2021-07-28T12:45Z	0.662	false
2021-07-28T12:30Z	0.647	false
2021-07-28T12:15Z	0.649	false
2021-07-28T12:00Z	0.646	false
2021-07-28T11:45Z	0.65	false
2021-07-28T11:30Z	0.648	false
2021-07-28T11:15Z	0.651	false
2021-07-28T11:00Z	0.65	false
2021-07-28T10:45Z	0.652	false
2021-07-28T10:30Z	0.651	false
2021-07-28T10:15Z	0.653	false
2021-07-28T10:00Z	0.652	false
2021-07-28T09:45Z	0.655	false
2021-07-28T09:30Z	0.654	false
2021-07-28T09:15Z	0.656	false
2021-07-28T09:00Z	0.655	false
2021-07-28T08:45Z	0.658	false
2021-07-28T08:30Z	0.656	false
2021-07-28T08:15Z	0.659	false
2021-07-28T08:00Z	0.657	false
2021-07-28T07:45Z	0.662	false
2021-07-28T07:30Z	0.66	false
2021-07-28T07:15Z	0.662	false
2021-07-28T07:00Z	0.66	false
2021-07-28T06:45Z	0.664	false
2021-07-28T06:30Z	0.662	false
2021-07-28T06:15Z	0.664	false
2021-07-28T06:00Z	0.663	false
2021-07-28T05:45Z	0.665	false
2021-07-28T05:30Z	0.663	false
2021-07-28T05:15Z	0.666	false
2021-07-28T05:00Z	0.664	false
2021-07-28T04:45Z	0.666	false
2021-07-28T04:30Z	0.664	false
2021-07-28T04:15Z	0.666	false
2021-07-28T04:00Z	0.664	false
2021-07-28T03:45Z	0.666	false
2021-07-28T03:30Z	0.663	false
2021-07-28T03:15Z	0.665	false
2021-07-28T03:00Z	0.663	false
2021-07-28T02:45Z	0.664	false
2021-07-28T02:30Z	0.662	false
2021-07-28T02:15Z	0.664	false
2021-07-28T02:00Z	0.661	false
2021-07-28T01:45Z	0.662	false
2021-07-28T01:30Z	0.659	false
2021-07-28T01:15Z	0.66	false
2021-07-28T01:00Z	0.658	false
2021-07-28T00:45Z	0.659	false
2021-07-28T00:30Z	0.656	false
2021-07-28T00:15Z	0.658	false
2021-07-28T00:00Z	0.655	false
2021-07-27T23:45Z	0.656	false
2021-07-27T23:30Z	0.653	false
2021-07-27T23:15Z	0.654	false
2021-07-27T23:00Z	0.651	false
2021-07-27T22:45Z	0.653	false
2021-07-27T22:30Z	0.65	false
2021-07-27T22:15Z	0.651	false
2021-07-27T22:00Z	0.648	false
2021-07-27T21:45Z	0.65	false
2021-07-27T21:30Z	0.646	false
2021-07-27T21:15Z	0.648	false
2021-07-27T21:00Z	0.645	false
2021-07-27T20:45Z	0.647	false
2021-07-27T20:30Z	0.645	false
2021-07-27T20:15Z	0.646	false
2021-07-27T20:00Z	0.644	false
2021-07-27T19:45Z	0.646	false
2021-07-27T19:30Z	0.644	false
2021-07-27T19:15Z	0.647	false
2021-07-27T19:00Z	0.644	false
2021-07-27T18:45Z	0.647	false
2021-07-27T18:30Z	0.646	false
2021-07-27T18:15Z	0.648	false
2021-07-27T18:00Z	0.647	false
2021-07-27T17:45Z	0.649	false
2021-07-27T17:30Z	0.647	false
2021-07-27T17:15Z	0.65	false
2021-07-27T17:00Z	0.647	false
2021-07-27T16:45Z	0.65	false
2021-07-27T16:30Z	0.647	false
2021-07-27T16:15Z	0.651	false
2021-07-27T16:00Z	0.649	false
2021-07-27T15:45Z	0.651	false
2021-07-27T15:30Z	0.649	false
2021-07-27T15:15Z	0.652	false
2021-07-27T15:00Z	0.649	false
2021-07-27T14:45Z	0.653	false
2021-07-27T14:30Z	0.65	false
2021-07-27T14:15Z	0.653	false
2021-07-27T14:00Z	0.65	false
2021-07-27T13:45Z	0.654	false
2021-07-27T13:30Z	0.651	false
2021-07-27T13:15Z	0.654	false
2021-07-27T13:00Z	0.652	false
2021-07-27T12:45Z	0.655	false
2021-07-27T12:30Z	0.653	false
2021-07-27T12:15Z	0.656	false
2021-07-27T12:00Z	0.654	false
2021-07-27T11:45Z	0.656	false
2021-07-27T11:30Z	0.653	false
2021-07-27T11:15Z	0.657	false
2021-07-27T11:00Z	0.654	false
2021-07-27T10:45Z	0.658	false
2021-07-27T10:30Z	0.655	false
2021-07-27T10:15Z	0.658	false
2021-07-27T10:00Z	0.655	false
2021-07-27T09:45Z	0.658	false
2021-07-27T09:30Z	0.655	false
2021-07-27T09:15Z	0.657	false
2021-07-27T09:00Z	0.655	false
2021-07-27T08:45Z	0.657	false
2021-07-27T08:30Z	0.655	false
2021-07-27T08:15Z	0.657	false
2021-07-27T08:00Z	0.655	false
2021-07-27T07:45Z	0.658	false
2021-07-27T07:30Z	0.656	false
2021-07-27T07:15Z	0.658	false
2021-07-27T07:00Z	0.656	false
2021-07-27T06:45Z	0.659	false
2021-07-27T06:30Z	0.656	false
2021-07-27T06:15Z	0.659	false
2021-07-27T06:00Z	0.657	false
2021-07-27T05:45Z	0.658	false
2021-07-27T05:30Z	0.656	false
2021-07-27T05:15Z	0.659	false
2021-07-27T05:00Z	0.657	false
2021-07-27T04:45Z	0.659	false
2021-07-27T04:30Z	0.657	false
2021-07-27T04:15Z	0.659	false
2021-07-27T04:00Z	0.657	false
2021-07-27T03:45Z	0.66	false
2021-07-27T03:30Z	0.657	false
2021-07-27T03:15Z	0.66	false
2021-07-27T03:00Z	0.657	false
2021-07-27T02:45Z	0.66	false
2021-07-27T02:30Z	0.657	false
2021-07-27T02:15Z	0.66	false
2021-07-27T02:00Z	0.658	false
2021-07-27T01:45Z	0.66	false
2021-07-27T01:30Z	0.657	false
2021-07-27T01:15Z	0.66	false
2021-07-27T01:00Z	0.657	false
2021-07-27T00:45Z	0.659	false
2021-07-27T00:30Z	0.657	false
2021-07-27T00:15Z	0.659	false
2021-07-27T00:00Z	0.657	false
2021-07-26T23:45Z	0.659	false
2021-07-26T23:30Z	0.656	false
2021-07-26T23:15Z	0.658	false
2021-07-26T23:00Z	0.656	false
2021-07-26T22:45Z	0.658	false
2021-07-26T22:30Z	0.656	false
2021-07-26T22:15Z	0.657	false
2021-07-26T22:00Z	0.655	false
2021-07-26T21:45Z	0.657	false
2021-07-26T21:30Z	0.655	false
2021-07-26T21:15Z	0.656	false
2021-07-26T21:00Z	0.654	false
2021-07-26T20:45Z	0.656	false
2021-07-26T20:30Z	0.654	false
2021-07-26T20:15Z	0.656	false
2021-07-26T20:00Z	0.653	false
2021-07-26T19:45Z	0.655	false
2021-07-26T19:30Z	0.653	false
2021-07-26T19:15Z	0.655	false
2021-07-26T19:00Z	0.653	false
2021-07-26T18:45Z	0.655	false
2021-07-26T18:30Z	0.653	false
2021-07-26T18:15Z	0.654	false
2021-07-26T18:00Z	0.652	false
2021-07-26T17:45Z	0.654	false
2021-07-26T17:30Z	0.652	false
2021-07-26T17:15Z	0.655	false
2021-07-26T17:00Z	0.652	false
2021-07-26T16:45Z	0.654	false
2021-07-26T16:30Z	0.653	false
2021-07-26T16:15Z	0.656	false
2021-07-26T16:00Z	0.654	false
2021-07-26T15:45Z	0.658	false
2021-07-26T15:30Z	0.656	false
2021-07-26T15:15Z	0.659	false
2021-07-26T15:00Z	0.658	false
2021-07-26T14:45Z	0.661	false
2021-07-26T14:30Z	0.659	false
2021-07-26T14:15Z	0.662	false
2021-07-26T14:00Z	0.661	false
2021-07-26T13:45Z	0.663	false
2021-07-26T13:30Z	0.662	false
2021-07-26T13:15Z	0.665	false
2021-07-26T13:00Z	0.664	false
2021-07-26T12:45Z	0.667	false
2021-07-26T12:30Z	0.664	false
2021-07-26T12:15Z	0.667	false
2021-07-26T12:00Z	0.665	false
2021-07-26T11:45Z	0.668	false
2021-07-26T11:30Z	0.667	false
2021-07-26T11:15Z	0.669	false
2021-07-26T11:00Z	0.668	false
2021-07-26T10:45Z	0.67	false
2021-07-26T10:30Z	0.668	false
2021-07-26T10:15Z	0.671	false
2021-07-26T10:00Z	0.668	false
2021-07-26T09:45Z	0.671	false
2021-07-26T09:30Z	0.668	false
2021-07-26T09:15Z	0.671	false
2021-07-26T09:00Z	0.668	false
2021-07-26T08:45Z	0.672	false
2021-07-26T08:30Z	0.67	false
2021-07-26T08:15Z	0.672	false
2021-07-26T08:00Z	0.669	false
2021-07-26T07:45Z	0.672	false
2021-07-26T07:30Z	0.669	false
2021-07-26T07:15Z	0.672	false
2021-07-26T07:00Z	0.669	false
2021-07-26T06:45Z	0.671	false
2021-07-26T06:30Z	0.669	false
2021-07-26T06:15Z	0.671	false
2021-07-26T06:00Z	0.668	false
2021-07-26T05:45Z	0.67	false
2021-07-26T05:30Z	0.667	false
2021-07-26T05:15Z	0.669	false
2021-07-26T05:00Z	0.666	false
2021-07-26T04:45Z	0.668	false
2021-07-26T04:30Z	0.665	false
2021-07-26T04:15Z	0.667	false
2021-07-26T04:00Z	0.664	false
2021-07-26T03:45Z	0.664	false
2021-07-26T03:30Z	0.662	false
2021-07-26T03:15Z	0.664	false
2021-07-26T03:00Z	0.661	false
2021-07-26T02:45Z	0.662	false
2021-07-26T02:30Z	0.659	false
2021-07-26T02:15Z	0.661	false
2021-07-26T02:00Z	0.658	false
2021-07-26T01:45Z	0.66	false
2021-07-26T01:30Z	0.657	false
2021-07-26T01:15Z	0.658	false
2021-07-26T01:00Z	0.655	false
2021-07-26T00:45Z	0.656	false
2021-07-26T00:30Z	0.653	false
2021-07-26T00:15Z	0.654	false
2021-07-26T00:00Z	0.65	false
2021-07-25T23:45Z	0.651	false
2021-07-25T23:30Z	0.648	false
2021-07-25T23:15Z	0.648	false
2021-07-25T23:00Z	0.644	false
2021-07-25T22:45Z	0.645	false
2021-07-25T22:30Z	0.641	false
2021-07-25T22:15Z	0.641	false
2021-07-25T22:00Z	0.638	false
2021-07-25T21:45Z	0.638	false
2021-07-25T21:30Z	0.634	false
2021-07-25T21:15Z	0.635	false
2021-07-25T21:00Z	0.632	false
2021-07-25T20:45Z	0.633	false
2021-07-25T20:30Z	0.63	false
2021-07-25T20:15Z	0.631	false
2021-07-25T20:00Z	0.629	false
2021-07-25T19:45Z	0.63	false
2021-07-25T19:30Z	0.628	false
2021-07-25T19:15Z	0.63	false
2021-07-25T19:00Z	0.629	false
2021-07-25T18:45Z	0.631	false
2021-07-25T18:30Z	0.629	false
2021-07-25T18:15Z	0.632	false
2021-07-25T18:00Z	0.631	false
2021-07-25T17:45Z	0.634	false
2021-07-25T17:30Z	0.632	false
2021-07-25T17:15Z	0.635	false
2021-07-25T17:00Z	0.634	false
2021-07-25T16:45Z	0.637	false
2021-07-25T16:30Z	0.637	false
2021-07-25T16:15Z	0.64	false
2021-07-25T16:00Z	0.639	false
2021-07-25T15:45Z	0.641	false
2021-07-25T15:30Z	0.64	false
2021-07-25T15:15Z	0.644	false
2021-07-25T15:00Z	0.642	false
2021-07-25T14:45Z	0.645	false
2021-07-25T14:30Z	0.643	false
2021-07-25T14:15Z	0.647	false
2021-07-25T14:00Z	0.645	false
2021-07-25T13:45Z	0.648	false
2021-07-25T13:30Z	0.647	false
2021-07-25T13:15Z	0.649	false
2021-07-25T13:00Z	0.648	false
2021-07-25T12:45Z	0.65	false
2021-07-25T12:30Z	0.649	false
2021-07-25T12:15Z	0.651	false
2021-07-25T12:00Z	0.65	false
2021-07-25T11:45Z	0.652	false
2021-07-25T11:30Z	0.65	false
2021-07-25T11:15Z	0.653	false
2021-07-25T11:00Z	0.651	false
2021-07-25T10:45Z	0.653	false
2021-07-25T10:30Z	0.652	false
2021-07-25T10:15Z	0.655	false
2021-07-25T10:00Z	0.653	false
2021-07-25T09:45Z	0.655	false
2021-07-25T09:30Z	0.653	false
2021-07-25T09:15Z	0.655	false
2021-07-25T09:00Z	0.653	false
2021-07-25T08:45Z	0.656	false
2021-07-25T08:30Z	0.653	false
2021-07-25T08:15Z	0.655	false
2021-07-25T08:00Z	0.653	false
2021-07-25T07:45Z	0.656	false
2021-07-25T07:30Z	0.654	false
2021-07-25T07:15Z	0.656	false
2021-07-25T07:00Z	0.654	false
2021-07-25T06:45Z	0.656	false
2021-07-25T06:30Z	0.655	false
2021-07-25T06:15Z	0.657	false
2021-07-25T06:00Z	0.655	false
2021-07-25T05:45Z	0.657	false
2021-07-25T05:30Z	0.655	false
2021-07-25T05:15Z	0.658	false
2021-07-25T05:00Z	0.655	false
2021-07-25T04:45Z	0.658	false
2021-07-25T04:30Z	0.655	false
2021-07-25T04:15Z	0.657	false
2021-07-25T04:00Z	0.655	false
2021-07-25T03:45Z	0.657	false
2021-07-25T03:30Z	0.655	false
2021-07-25T03:15Z	0.657	false
2021-07-25T03:00Z	0.654	false
2021-07-25T02:45Z	0.656	false
2021-07-25T02:30Z	0.654	false
2021-07-25T02:15Z	0.655	false
2021-07-25T02:00Z	0.653	false
2021-07-25T01:45Z	0.654	false
2021-07-25T01:30Z	0.652	false
2021-07-25T01:15Z	0.653	false
2021-07-25T01:00Z	0.65	false
2021-07-25T00:45Z	0.651	false
2021-07-25T00:30Z	0.648	false
2021-07-25T00:15Z	0.65	false
2021-07-25T00:00Z	0.647	false
2021-07-24T23:45Z	0.647	false
2021-07-24T23:30Z	0.644	false
2021-07-24T23:15Z	0.645	false
2021-07-24T23:00Z	0.643	false
2021-07-24T22:45Z	0.644	false
2021-07-24T22:30Z	0.641	false
2021-07-24T22:15Z	0.642	false
2021-07-24T22:00Z	0.639	false
2021-07-24T21:45Z	0.64	false
2021-07-24T21:30Z	0.637	false
2021-07-24T21:15Z	0.639	false
2021-07-24T21:00Z	0.636	false
2021-07-24T20:45Z	0.638	false
2021-07-24T20:30Z	0.635	false
2021-07-24T20:15Z	0.637	false
2021-07-24T20:00Z	0.634	false
2021-07-24T19:45Z	0.636	false
2021-07-24T19:30Z	0.633	false
2021-07-24T19:15Z	0.635	false
2021-07-24T19:00Z	0.633	false
2021-07-24T18:45Z	0.635	false
2021-07-24T18:30Z	0.634	false
2021-07-24T18:15Z	0.635	false
2021-07-24T18:00Z	0.634	false
2021-07-24T17:45Z	0.636	false
2021-07-24T17:30Z	0.634	false
2021-07-24T17:15Z	0.637	false
2021-07-24T17:00Z	0.635	false
2021-07-24T16:45Z	0.637	false
2021-07-24T16:30Z	0.636	false
2021-07-24T16:15Z	0.639	false
2021-07-24T16:00Z	0.637	false
2021-07-24T15:45Z	0.64	false
2021-07-24T15:30Z	0.638	false
2021-07-24T15:15Z	0.641	false
2021-07-23T23:45Z	0.636	false
2021-07-23T23:30Z	0.632	false
2021-07-23T23:15Z	0.633	false
2021-07-23T23:00Z	0.629	false
2021-07-23T22:45Z	0.63	false
2021-07-23T22:30Z	0.626	false
2021-07-23T22:15Z	0.627	false
2021-07-23T22:00Z	0.623	false
2021-07-23T21:45Z	0.624	false
2021-07-23T21:30Z	0.621	false
2021-07-23T21:15Z	0.622	false
2021-07-23T21:00Z	0.618	false
2021-07-23T20:45Z	0.62	false
2021-07-23T20:30Z	0.617	false
2021-07-23T20:15Z	0.618	false
2021-07-23T20:00Z	0.616	false
2021-07-23T19:45Z	0.617	false
2021-07-23T19:30Z	0.614	false
2021-07-23T19:15Z	0.617	false
2021-07-23T19:00Z	0.616	false
2021-07-23T18:45Z	0.617	false
2021-07-23T18:30Z	0.614	false
2021-07-23T18:15Z	0.616	false

Forecast data

Key information

• Station name: Stanwell Mill
• Station ID: 7207
• River name: River Colne
• Typical range: 0.21m to 1.12m
• Highest level on record: 1.24m on 13 February 2001
• Site datum: 20.00mAOD (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
• Check the long term flood risk for an area in England.

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