River level River Colne at Stanwell Mill

Check for flood warnings in this area

Latest recorded level 0.62m at 4:45am Tuesday 11 August 2020.

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
• Show highest recorded level

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Observed data

DateTime	Value	Error
2020-08-11T03:45Z	0.622	false
2020-08-11T03:30Z	0.62	false
2020-08-11T03:15Z	0.622	false
2020-08-11T03:00Z	0.619	false
2020-08-11T02:45Z	0.621	false
2020-08-11T02:30Z	0.618	false
2020-08-11T02:15Z	0.621	false
2020-08-11T02:00Z	0.617	false
2020-08-11T01:45Z	0.619	false
2020-08-11T01:30Z	0.615	false
2020-08-11T01:15Z	0.617	false
2020-08-11T01:00Z	0.613	false
2020-08-11T00:45Z	0.615	false
2020-08-11T00:30Z	0.611	false
2020-08-11T00:15Z	0.613	false
2020-08-11T00:00Z	0.608	false
2020-08-10T23:45Z	0.609	false
2020-08-10T23:30Z	0.606	false
2020-08-10T23:15Z	0.605	false
2020-08-10T23:00Z	0.601	false
2020-08-10T22:45Z	0.602	false
2020-08-10T22:30Z	0.598	false
2020-08-10T22:15Z	0.599	false
2020-08-10T22:00Z	0.595	false
2020-08-10T21:45Z	0.595	false
2020-08-10T21:30Z	0.592	false
2020-08-10T21:15Z	0.593	false
2020-08-10T21:00Z	0.59	false
2020-08-10T20:45Z	0.591	false
2020-08-10T20:30Z	0.589	false
2020-08-10T20:15Z	0.59	false
2020-08-10T20:00Z	0.588	false
2020-08-10T19:45Z	0.589	false
2020-08-10T19:30Z	0.587	false
2020-08-10T19:15Z	0.59	false
2020-08-10T19:00Z	0.587	false
2020-08-10T18:45Z	0.591	false
2020-08-10T18:30Z	0.588	false
2020-08-10T18:15Z	0.592	false
2020-08-10T18:00Z	0.59	false
2020-08-10T17:45Z	0.593	false
2020-08-10T17:30Z	0.592	false
2020-08-10T17:15Z	0.595	false
2020-08-10T17:00Z	0.595	false
2020-08-10T16:45Z	0.598	false
2020-08-10T16:30Z	0.597	false
2020-08-10T16:15Z	0.6	false
2020-08-10T16:00Z	0.6	false
2020-08-10T15:45Z	0.603	false
2020-08-10T15:30Z	0.603	false
2020-08-10T15:15Z	0.606	false
2020-08-10T15:00Z	0.605	false
2020-08-10T14:45Z	0.608	false
2020-08-10T14:30Z	0.608	false
2020-08-10T14:15Z	0.611	false
2020-08-10T14:00Z	0.609	false
2020-08-10T13:45Z	0.613	false
2020-08-10T13:30Z	0.611	false
2020-08-10T13:15Z	0.615	false
2020-08-10T13:00Z	0.614	false
2020-08-10T12:45Z	0.616	false
2020-08-10T12:30Z	0.615	false
2020-08-10T12:15Z	0.618	false
2020-08-10T12:00Z	0.616	false
2020-08-10T11:45Z	0.618	false
2020-08-10T11:30Z	0.617	false
2020-08-10T11:15Z	0.619	false
2020-08-10T11:00Z	0.617	false
2020-08-10T10:45Z	0.62	false
2020-08-10T10:30Z	0.617	false
2020-08-10T10:15Z	0.621	false
2020-08-10T10:00Z	0.617	false
2020-08-10T09:45Z	0.621	false
2020-08-10T09:30Z	0.618	false
2020-08-10T09:15Z	0.621	false
2020-08-10T09:00Z	0.618	false
2020-08-10T08:45Z	0.62	false
2020-08-10T08:30Z	0.618	false
2020-08-10T08:15Z	0.621	false
2020-08-10T08:00Z	0.618	false
2020-08-10T07:45Z	0.621	false
2020-08-10T07:30Z	0.618	false
2020-08-10T07:15Z	0.62	false
2020-08-10T07:00Z	0.618	false
2020-08-10T06:45Z	0.619	false
2020-08-10T06:30Z	0.618	false
2020-08-10T06:15Z	0.619	false
2020-08-10T06:00Z	0.617	false
2020-08-10T05:45Z	0.619	false
2020-08-10T05:30Z	0.617	false
2020-08-10T05:15Z	0.619	false
2020-08-10T05:00Z	0.617	false
2020-08-10T04:45Z	0.618	false
2020-08-10T04:30Z	0.616	false
2020-08-10T04:15Z	0.617	false
2020-08-10T04:00Z	0.614	false
2020-08-10T03:45Z	0.616	false
2020-08-10T03:30Z	0.613	false
2020-08-10T03:15Z	0.615	false
2020-08-10T03:00Z	0.612	false
2020-08-10T02:45Z	0.613	false
2020-08-10T02:30Z	0.61	false
2020-08-10T02:15Z	0.612	false
2020-08-10T02:00Z	0.608	false
2020-08-10T01:45Z	0.61	false
2020-08-10T01:30Z	0.606	false
2020-08-10T01:15Z	0.606	false
2020-08-10T01:00Z	0.603	false
2020-08-10T00:45Z	0.604	false
2020-08-10T00:30Z	0.601	false
2020-08-10T00:15Z	0.602	false
2020-08-10T00:00Z	0.598	false
2020-08-09T23:45Z	0.598	false
2020-08-09T23:30Z	0.595	false
2020-08-09T23:15Z	0.596	false
2020-08-09T23:00Z	0.592	false
2020-08-09T22:45Z	0.592	false
2020-08-09T22:30Z	0.589	false
2020-08-09T22:15Z	0.59	false
2020-08-09T22:00Z	0.587	false
2020-08-09T21:45Z	0.588	false
2020-08-09T21:30Z	0.584	false
2020-08-09T21:15Z	0.586	false
2020-08-09T21:00Z	0.582	false
2020-08-09T20:45Z	0.583	false
2020-08-09T20:30Z	0.581	false
2020-08-09T20:15Z	0.583	false
2020-08-09T20:00Z	0.581	false
2020-08-09T19:45Z	0.584	false
2020-08-09T19:30Z	0.581	false
2020-08-09T19:15Z	0.584	false
2020-08-09T19:00Z	0.583	false
2020-08-09T18:45Z	0.586	false
2020-08-09T18:30Z	0.585	false
2020-08-09T18:15Z	0.588	false
2020-08-09T18:00Z	0.587	false
2020-08-09T17:45Z	0.591	false
2020-08-09T17:30Z	0.591	false
2020-08-09T17:15Z	0.594	false
2020-08-09T17:00Z	0.594	false
2020-08-09T16:45Z	0.597	false
2020-08-09T16:30Z	0.596	false
2020-08-09T16:15Z	0.6	false
2020-08-09T16:00Z	0.6	false
2020-08-09T15:45Z	0.603	false
2020-08-09T15:30Z	0.603	false
2020-08-09T15:15Z	0.607	false
2020-08-09T15:00Z	0.606	false
2020-08-09T14:45Z	0.609	false
2020-08-09T14:30Z	0.609	false
2020-08-09T14:15Z	0.612	false
2020-08-09T14:00Z	0.611	false
2020-08-09T13:45Z	0.614	false
2020-08-09T13:30Z	0.613	false
2020-08-09T13:15Z	0.615	false
2020-08-09T13:00Z	0.614	false
2020-08-09T12:45Z	0.617	false
2020-08-09T12:30Z	0.615	false
2020-08-09T12:15Z	0.617	false
2020-08-09T12:00Z	0.616	false
2020-08-09T11:45Z	0.619	false
2020-08-09T11:30Z	0.617	false
2020-08-09T11:15Z	0.619	false
2020-08-09T11:00Z	0.618	false
2020-08-09T10:45Z	0.62	false
2020-08-09T10:30Z	0.618	false
2020-08-09T10:15Z	0.621	false
2020-08-09T10:00Z	0.619	false
2020-08-09T09:45Z	0.621	false
2020-08-09T09:30Z	0.619	false
2020-08-09T09:15Z	0.621	false
2020-08-09T09:00Z	0.62	false
2020-08-09T08:45Z	0.622	false
2020-08-09T08:30Z	0.62	false
2020-08-09T08:15Z	0.622	false
2020-08-09T08:00Z	0.62	false
2020-08-09T07:45Z	0.622	false
2020-08-09T07:30Z	0.62	false
2020-08-09T07:15Z	0.623	false
2020-08-09T07:00Z	0.62	false
2020-08-09T06:45Z	0.623	false
2020-08-09T06:30Z	0.62	false
2020-08-09T06:15Z	0.622	false
2020-08-09T06:00Z	0.621	false
2020-08-09T05:45Z	0.622	false
2020-08-09T05:30Z	0.62	false
2020-08-09T05:15Z	0.622	false
2020-08-09T05:00Z	0.62	false
2020-08-09T04:45Z	0.621	false
2020-08-09T04:30Z	0.619	false
2020-08-09T04:15Z	0.62	false
2020-08-09T04:00Z	0.618	false
2020-08-09T03:45Z	0.619	false
2020-08-09T03:30Z	0.617	false
2020-08-09T03:15Z	0.618	false
2020-08-09T03:00Z	0.616	false
2020-08-09T02:45Z	0.617	false
2020-08-09T02:30Z	0.614	false
2020-08-09T02:15Z	0.615	false
2020-08-09T02:00Z	0.612	false
2020-08-09T01:45Z	0.613	false
2020-08-09T01:30Z	0.61	false
2020-08-09T01:15Z	0.611	false
2020-08-09T01:00Z	0.608	false
2020-08-09T00:45Z	0.608	false
2020-08-09T00:30Z	0.605	false
2020-08-09T00:15Z	0.605	false
2020-08-09T00:00Z	0.602	false
2020-08-08T23:45Z	0.603	false
2020-08-08T23:30Z	0.599	false
2020-08-08T23:15Z	0.599	false
2020-08-08T23:00Z	0.596	false
2020-08-08T22:45Z	0.598	false
2020-08-08T22:30Z	0.594	false
2020-08-08T22:15Z	0.595	false
2020-08-08T22:00Z	0.592	false
2020-08-08T21:45Z	0.593	false
2020-08-08T21:30Z	0.591	false
2020-08-08T21:15Z	0.593	false
2020-08-08T21:00Z	0.59	false
2020-08-08T20:45Z	0.592	false
2020-08-08T20:30Z	0.59	false
2020-08-08T20:15Z	0.592	false
2020-08-08T20:00Z	0.591	false
2020-08-08T19:45Z	0.594	false
2020-08-08T19:30Z	0.592	false
2020-08-08T19:15Z	0.596	false
2020-08-08T19:00Z	0.594	false
2020-08-08T18:45Z	0.597	false
2020-08-08T18:30Z	0.596	false
2020-08-08T18:15Z	0.599	false
2020-08-08T18:00Z	0.598	false
2020-08-08T17:45Z	0.601	false
2020-08-08T17:30Z	0.6	false
2020-08-08T17:15Z	0.603	false
2020-08-08T17:00Z	0.601	false
2020-08-08T16:45Z	0.605	false
2020-08-08T16:30Z	0.604	false
2020-08-08T16:15Z	0.607	false
2020-08-08T16:00Z	0.605	false
2020-08-08T15:45Z	0.608	false
2020-08-08T15:30Z	0.607	false
2020-08-08T15:15Z	0.609	false
2020-08-08T15:00Z	0.608	false
2020-08-08T14:45Z	0.611	false
2020-08-08T14:30Z	0.609	false
2020-08-08T14:15Z	0.612	false
2020-08-08T14:00Z	0.611	false
2020-08-08T13:45Z	0.613	false
2020-08-08T13:30Z	0.612	false
2020-08-08T13:15Z	0.614	false
2020-08-08T13:00Z	0.613	false
2020-08-08T12:45Z	0.615	false
2020-08-08T12:30Z	0.613	false
2020-08-08T12:15Z	0.615	false
2020-08-08T12:00Z	0.614	false
2020-08-08T11:45Z	0.617	false
2020-08-08T11:30Z	0.616	false
2020-08-08T11:15Z	0.617	false
2020-08-08T11:00Z	0.616	false
2020-08-08T10:45Z	0.619	false
2020-08-08T10:30Z	0.616	false
2020-08-08T10:15Z	0.619	false
2020-08-08T10:00Z	0.617	false
2020-08-08T09:45Z	0.62	false
2020-08-08T09:30Z	0.618	false
2020-08-08T09:15Z	0.62	false
2020-08-08T09:00Z	0.618	false
2020-08-08T08:45Z	0.621	false
2020-08-08T08:30Z	0.619	false
2020-08-08T08:15Z	0.622	false
2020-08-08T08:00Z	0.62	false
2020-08-08T07:45Z	0.623	false
2020-08-08T07:30Z	0.621	false
2020-08-08T07:15Z	0.623	false
2020-08-08T07:00Z	0.622	false
2020-08-08T06:45Z	0.624	false
2020-08-08T06:30Z	0.622	false
2020-08-08T06:15Z	0.624	false
2020-08-08T06:00Z	0.623	false
2020-08-08T05:45Z	0.625	false
2020-08-08T05:30Z	0.623	false
2020-08-08T05:15Z	0.625	false
2020-08-08T05:00Z	0.622	false
2020-08-08T04:45Z	0.625	false
2020-08-08T04:30Z	0.623	false
2020-08-08T04:15Z	0.625	false
2020-08-08T04:00Z	0.622	false
2020-08-08T03:45Z	0.625	false
2020-08-08T03:30Z	0.622	false
2020-08-08T03:15Z	0.624	false
2020-08-08T03:00Z	0.621	false
2020-08-08T02:45Z	0.623	false
2020-08-08T02:30Z	0.62	false
2020-08-08T02:15Z	0.622	false
2020-08-08T02:00Z	0.619	false
2020-08-08T01:45Z	0.62	false
2020-08-08T01:30Z	0.617	false
2020-08-08T01:15Z	0.619	false
2020-08-08T01:00Z	0.616	false
2020-08-08T00:45Z	0.618	false
2020-08-08T00:30Z	0.614	false
2020-08-08T00:15Z	0.615	false
2020-08-08T00:00Z	0.613	false
2020-08-07T23:45Z	0.614	false
2020-08-07T23:30Z	0.61	false
2020-08-07T23:15Z	0.611	false
2020-08-07T23:00Z	0.608	false
2020-08-07T22:45Z	0.609	false
2020-08-07T22:30Z	0.606	false
2020-08-07T22:15Z	0.608	false
2020-08-07T22:00Z	0.604	false
2020-08-07T21:45Z	0.606	false
2020-08-07T21:30Z	0.602	false
2020-08-07T21:15Z	0.604	false
2020-08-07T21:00Z	0.6	false
2020-08-07T20:45Z	0.602	false
2020-08-07T20:30Z	0.598	false
2020-08-07T20:15Z	0.6	false
2020-08-07T20:00Z	0.596	false
2020-08-07T19:45Z	0.598	false
2020-08-07T19:30Z	0.595	false
2020-08-07T19:15Z	0.597	false
2020-08-07T19:00Z	0.593	false
2020-08-07T18:45Z	0.594	false
2020-08-07T18:30Z	0.591	false
2020-08-07T18:15Z	0.593	false
2020-08-07T18:00Z	0.59	false
2020-08-07T17:45Z	0.593	false
2020-08-07T17:30Z	0.59	false
2020-08-07T17:15Z	0.593	false
2020-08-07T17:00Z	0.592	false
2020-08-07T16:45Z	0.595	false
2020-08-07T16:30Z	0.594	false
2020-08-07T16:15Z	0.598	false
2020-08-07T16:00Z	0.597	false
2020-08-07T15:45Z	0.601	false
2020-08-07T15:30Z	0.601	false
2020-08-07T15:15Z	0.604	false
2020-08-07T15:00Z	0.605	false
2020-08-07T14:45Z	0.609	false
2020-08-07T14:30Z	0.609	false
2020-08-07T14:15Z	0.612	false
2020-08-07T14:00Z	0.612	false
2020-08-07T13:45Z	0.615	false
2020-08-07T13:30Z	0.615	false
2020-08-07T13:15Z	0.618	false
2020-08-07T13:00Z	0.617	false
2020-08-07T12:45Z	0.619	false
2020-08-07T12:30Z	0.618	false
2020-08-07T12:15Z	0.621	false
2020-08-07T12:00Z	0.619	false
2020-08-07T11:45Z	0.622	false
2020-08-07T11:30Z	0.62	false
2020-08-07T11:15Z	0.622	false
2020-08-07T11:00Z	0.62	false
2020-08-07T10:45Z	0.623	false
2020-08-07T10:30Z	0.621	false
2020-08-07T10:15Z	0.623	false
2020-08-07T10:00Z	0.622	false
2020-08-07T09:45Z	0.623	false
2020-08-07T09:30Z	0.622	false
2020-08-07T09:15Z	0.623	false
2020-08-07T09:00Z	0.621	false
2020-08-07T08:45Z	0.623	false
2020-08-07T08:30Z	0.622	false
2020-08-07T08:15Z	0.623	false
2020-08-07T08:00Z	0.622	false
2020-08-07T07:45Z	0.624	false
2020-08-07T07:30Z	0.622	false
2020-08-07T07:15Z	0.624	false
2020-08-07T07:00Z	0.622	false
2020-08-07T06:45Z	0.624	false
2020-08-07T06:30Z	0.622	false
2020-08-07T06:15Z	0.625	false
2020-08-07T06:00Z	0.623	false
2020-08-07T05:45Z	0.625	false
2020-08-07T05:30Z	0.623	false
2020-08-07T05:15Z	0.625	false
2020-08-07T05:00Z	0.623	false
2020-08-07T04:45Z	0.625	false
2020-08-07T04:30Z	0.623	false
2020-08-07T04:15Z	0.625	false
2020-08-07T04:00Z	0.623	false
2020-08-07T03:45Z	0.625	false
2020-08-07T03:30Z	0.622	false
2020-08-07T03:15Z	0.624	false
2020-08-07T03:00Z	0.621	false
2020-08-07T02:45Z	0.623	false
2020-08-07T02:30Z	0.62	false
2020-08-07T02:15Z	0.622	false
2020-08-07T02:00Z	0.619	false
2020-08-07T01:45Z	0.62	false
2020-08-07T01:30Z	0.617	false
2020-08-07T01:15Z	0.619	false
2020-08-07T01:00Z	0.615	false
2020-08-07T00:45Z	0.616	false
2020-08-07T00:30Z	0.613	false
2020-08-07T00:15Z	0.614	false
2020-08-07T00:00Z	0.611	false
2020-08-06T23:45Z	0.612	false
2020-08-06T23:30Z	0.608	false
2020-08-06T23:15Z	0.609	false
2020-08-06T23:00Z	0.605	false
2020-08-06T22:45Z	0.606	false
2020-08-06T22:30Z	0.603	false
2020-08-06T22:15Z	0.603	false
2020-08-06T22:00Z	0.6	false
2020-08-06T21:45Z	0.601	false
2020-08-06T21:30Z	0.598	false
2020-08-06T21:15Z	0.6	false
2020-08-06T21:00Z	0.597	false
2020-08-06T20:45Z	0.599	false
2020-08-06T20:30Z	0.596	false
2020-08-06T20:15Z	0.598	false
2020-08-06T20:00Z	0.596	false
2020-08-06T19:45Z	0.599	false
2020-08-06T19:30Z	0.597	false
2020-08-06T19:15Z	0.6	false
2020-08-06T19:00Z	0.598	false
2020-08-06T18:45Z	0.601	false
2020-08-06T18:30Z	0.6	false
2020-08-06T18:15Z	0.603	false
2020-08-06T18:00Z	0.602	false
2020-08-06T17:45Z	0.605	false
2020-08-06T17:30Z	0.604	false
2020-08-06T17:15Z	0.608	false
2020-08-06T17:00Z	0.607	false
2020-08-06T16:45Z	0.61	false
2020-08-06T16:30Z	0.609	false
2020-08-06T16:15Z	0.612	false
2020-08-06T16:00Z	0.611	false
2020-08-06T15:45Z	0.615	false
2020-08-06T15:30Z	0.613	false
2020-08-06T15:15Z	0.616	false
2020-08-06T15:00Z	0.614	false
2020-08-06T14:45Z	0.618	false
2020-08-06T14:30Z	0.616	false
2020-08-06T14:15Z	0.618	false
2020-08-06T14:00Z	0.617	false
2020-08-06T13:45Z	0.621	false
2020-08-06T13:30Z	0.618	false
2020-08-06T13:15Z	0.622	false
2020-08-06T13:00Z	0.618	false
2020-08-06T12:45Z	0.622	false
2020-08-06T12:30Z	0.619	false
2020-08-06T12:15Z	0.622	false
2020-08-06T12:00Z	0.62	false
2020-08-06T11:45Z	0.623	false
2020-08-06T11:30Z	0.621	false
2020-08-06T11:15Z	0.623	false
2020-08-06T11:00Z	0.621	false
2020-08-06T10:45Z	0.624	false
2020-08-06T10:30Z	0.62	false
2020-08-06T10:15Z	0.624	false
2020-08-06T10:00Z	0.621	false
2020-08-06T09:45Z	0.623	false
2020-08-06T09:30Z	0.622	false
2020-08-06T09:15Z	0.624	false
2020-08-06T09:00Z	0.621	false
2020-08-06T08:45Z	0.623	false
2020-08-06T08:30Z	0.621	false
2020-08-06T08:15Z	0.623	false
2020-08-06T08:00Z	0.622	false
2020-08-06T07:45Z	0.623	false
2020-08-06T07:30Z	0.621	false
2020-08-06T07:15Z	0.623	false
2020-08-06T07:00Z	0.621	false
2020-08-06T06:45Z	0.624	false
2020-08-06T06:30Z	0.622	false
2020-08-06T06:15Z	0.624	false
2020-08-06T06:00Z	0.622	false
2020-08-06T05:45Z	0.624	false
2020-08-06T05:30Z	0.623	false
2020-08-06T05:15Z	0.625	false
2020-08-06T05:00Z	0.623	false
2020-08-06T04:45Z	0.625	false
2020-08-06T04:30Z	0.623	false
2020-08-06T04:15Z	0.625	false
2020-08-06T04:00Z	0.622	false
2020-08-06T03:45Z	0.625	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
• View your property's long term risk of flooding

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