River level River Colne at Stanwell Mill

Check for flood warnings in this area

Latest recorded level 0.69m at 6:30am Monday 25 May 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
2020-05-25T05:30Z	0.689	false
2020-05-25T05:15Z	0.69	false
2020-05-25T05:00Z	0.688	false
2020-05-25T04:45Z	0.69	false
2020-05-25T04:30Z	0.688	false
2020-05-25T04:15Z	0.689	false
2020-05-25T04:00Z	0.686	false
2020-05-25T03:45Z	0.687	false
2020-05-25T03:30Z	0.684	false
2020-05-25T03:15Z	0.685	false
2020-05-25T03:00Z	0.682	false
2020-05-25T02:45Z	0.683	false
2020-05-25T02:30Z	0.68	false
2020-05-25T02:15Z	0.681	false
2020-05-25T02:00Z	0.678	false
2020-05-25T01:45Z	0.679	false
2020-05-25T01:30Z	0.676	false
2020-05-25T01:15Z	0.678	false
2020-05-25T01:00Z	0.675	false
2020-05-25T00:45Z	0.677	false
2020-05-25T00:30Z	0.673	false
2020-05-25T00:15Z	0.675	false
2020-05-25T00:00Z	0.672	false
2020-05-24T23:45Z	0.674	false
2020-05-24T23:30Z	0.67	false
2020-05-24T23:15Z	0.672	false
2020-05-24T23:00Z	0.67	false
2020-05-24T22:45Z	0.67	false
2020-05-24T22:30Z	0.668	false
2020-05-24T22:15Z	0.669	false
2020-05-24T22:00Z	0.666	false
2020-05-24T21:45Z	0.669	false
2020-05-24T21:30Z	0.665	false
2020-05-24T21:15Z	0.667	false
2020-05-24T21:00Z	0.665	false
2020-05-24T20:45Z	0.666	false
2020-05-24T20:30Z	0.664	false
2020-05-24T20:15Z	0.666	false
2020-05-24T20:00Z	0.664	false
2020-05-24T19:45Z	0.667	false
2020-05-24T19:30Z	0.664	false
2020-05-24T19:15Z	0.666	false
2020-05-24T19:00Z	0.664	false
2020-05-24T18:45Z	0.666	false
2020-05-24T18:30Z	0.664	false
2020-05-24T18:15Z	0.667	false
2020-05-24T18:00Z	0.665	false
2020-05-24T17:45Z	0.667	false
2020-05-24T17:30Z	0.665	false
2020-05-24T17:15Z	0.668	false
2020-05-24T17:00Z	0.666	false
2020-05-24T16:45Z	0.669	false
2020-05-24T16:30Z	0.668	false
2020-05-24T16:15Z	0.67	false
2020-05-24T16:00Z	0.669	false
2020-05-24T15:45Z	0.672	false
2020-05-24T15:30Z	0.672	false
2020-05-24T15:15Z	0.675	false
2020-05-24T15:00Z	0.674	false
2020-05-24T14:45Z	0.676	false
2020-05-24T14:30Z	0.675	false
2020-05-24T14:15Z	0.677	false
2020-05-24T14:00Z	0.676	false
2020-05-24T13:45Z	0.679	false
2020-05-24T13:30Z	0.677	false
2020-05-24T13:15Z	0.68	false
2020-05-24T13:00Z	0.678	false
2020-05-24T12:45Z	0.681	false
2020-05-24T12:30Z	0.68	false
2020-05-24T12:15Z	0.682	false
2020-05-24T12:00Z	0.68	false
2020-05-24T11:45Z	0.683	false
2020-05-24T11:30Z	0.68	false
2020-05-24T11:15Z	0.683	false
2020-05-24T11:00Z	0.682	false
2020-05-24T10:45Z	0.684	false
2020-05-24T10:30Z	0.682	false
2020-05-24T10:15Z	0.684	false
2020-05-24T10:00Z	0.682	false
2020-05-24T09:45Z	0.684	false
2020-05-24T09:30Z	0.683	false
2020-05-24T09:15Z	0.685	false
2020-05-24T09:00Z	0.683	false
2020-05-24T08:45Z	0.685	false
2020-05-24T08:30Z	0.683	false
2020-05-24T08:15Z	0.685	false
2020-05-24T08:00Z	0.684	false
2020-05-24T07:45Z	0.685	false
2020-05-24T07:30Z	0.684	false
2020-05-24T07:15Z	0.685	false
2020-05-24T07:00Z	0.684	false
2020-05-24T06:45Z	0.685	false
2020-05-24T06:30Z	0.683	false
2020-05-24T06:15Z	0.684	false
2020-05-24T06:00Z	0.683	false
2020-05-24T05:45Z	0.685	false
2020-05-24T05:30Z	0.683	false
2020-05-24T05:15Z	0.684	false
2020-05-24T05:00Z	0.682	false
2020-05-24T04:45Z	0.684	false
2020-05-24T04:30Z	0.682	false
2020-05-24T04:15Z	0.684	false
2020-05-24T04:00Z	0.682	false
2020-05-24T03:45Z	0.683	false
2020-05-24T03:30Z	0.681	false
2020-05-24T03:15Z	0.683	false
2020-05-24T03:00Z	0.68	false
2020-05-24T02:45Z	0.682	false
2020-05-24T02:30Z	0.68	false
2020-05-24T02:15Z	0.682	false
2020-05-24T02:00Z	0.679	false
2020-05-24T01:45Z	0.681	false
2020-05-24T01:30Z	0.679	false
2020-05-24T01:15Z	0.68	false
2020-05-24T01:00Z	0.678	false
2020-05-24T00:45Z	0.679	false
2020-05-24T00:30Z	0.677	false
2020-05-24T00:15Z	0.678	false
2020-05-24T00:00Z	0.675	false
2020-05-23T23:45Z	0.677	false
2020-05-23T23:30Z	0.674	false
2020-05-23T23:15Z	0.676	false
2020-05-23T23:00Z	0.673	false
2020-05-23T22:45Z	0.675	false
2020-05-23T22:30Z	0.672	false
2020-05-23T22:15Z	0.674	false
2020-05-23T22:00Z	0.671	false
2020-05-23T21:45Z	0.673	false
2020-05-23T21:30Z	0.67	false
2020-05-23T21:15Z	0.672	false
2020-05-23T21:00Z	0.669	false
2020-05-23T20:45Z	0.67	false
2020-05-23T20:30Z	0.669	false
2020-05-23T20:15Z	0.67	false
2020-05-23T20:00Z	0.668	false
2020-05-23T19:45Z	0.671	false
2020-05-23T19:30Z	0.668	false
2020-05-23T19:15Z	0.67	false
2020-05-23T19:00Z	0.669	false
2020-05-23T18:45Z	0.671	false
2020-05-23T18:30Z	0.669	false
2020-05-23T18:15Z	0.671	false
2020-05-23T18:00Z	0.669	false
2020-05-23T17:45Z	0.671	false
2020-05-23T17:30Z	0.67	false
2020-05-23T17:15Z	0.673	false
2020-05-23T17:00Z	0.671	false
2020-05-23T16:45Z	0.672	false
2020-05-23T16:30Z	0.671	false
2020-05-23T16:15Z	0.673	false
2020-05-23T16:00Z	0.672	false
2020-05-23T15:45Z	0.674	false
2020-05-23T15:30Z	0.672	false
2020-05-23T15:15Z	0.675	false
2020-05-23T15:00Z	0.673	false
2020-05-23T14:45Z	0.676	false
2020-05-23T14:30Z	0.675	false
2020-05-23T14:15Z	0.677	false
2020-05-23T14:00Z	0.676	false
2020-05-23T13:45Z	0.678	false
2020-05-23T13:30Z	0.677	false
2020-05-23T13:15Z	0.679	false
2020-05-23T13:00Z	0.678	false
2020-05-23T12:45Z	0.68	false
2020-05-23T12:30Z	0.679	false
2020-05-23T12:15Z	0.681	false
2020-05-23T12:00Z	0.68	false
2020-05-23T11:45Z	0.683	false
2020-05-23T11:30Z	0.679	false
2020-05-23T11:15Z	0.682	false
2020-05-23T11:00Z	0.681	false
2020-05-23T10:45Z	0.683	false
2020-05-23T10:30Z	0.681	false
2020-05-23T10:15Z	0.684	false
2020-05-23T10:00Z	0.682	false
2020-05-23T09:45Z	0.684	false
2020-05-23T09:30Z	0.682	false
2020-05-23T09:15Z	0.684	false
2020-05-23T09:00Z	0.682	false
2020-05-23T08:45Z	0.685	false
2020-05-23T08:30Z	0.683	false
2020-05-23T08:15Z	0.685	false
2020-05-23T08:00Z	0.684	false
2020-05-23T07:45Z	0.686	false
2020-05-23T07:30Z	0.683	false
2020-05-23T07:15Z	0.686	false
2020-05-23T07:00Z	0.684	false
2020-05-23T06:45Z	0.686	false
2020-05-23T06:30Z	0.684	false
2020-05-23T06:15Z	0.686	false
2020-05-23T06:00Z	0.685	false
2020-05-23T05:45Z	0.686	false
2020-05-23T05:30Z	0.684	false
2020-05-23T05:15Z	0.687	false
2020-05-23T05:00Z	0.685	false
2020-05-23T04:45Z	0.687	false
2020-05-23T04:30Z	0.685	false
2020-05-23T04:15Z	0.687	false
2020-05-23T04:00Z	0.686	false
2020-05-23T03:45Z	0.687	false
2020-05-23T03:30Z	0.685	false
2020-05-23T03:15Z	0.687	false
2020-05-23T03:00Z	0.685	false
2020-05-23T02:45Z	0.687	false
2020-05-23T02:30Z	0.684	false
2020-05-23T02:15Z	0.687	false
2020-05-23T02:00Z	0.684	false
2020-05-23T01:45Z	0.686	false
2020-05-23T01:30Z	0.684	false
2020-05-23T01:15Z	0.686	false
2020-05-23T01:00Z	0.683	false
2020-05-23T00:45Z	0.685	false
2020-05-23T00:30Z	0.683	false
2020-05-23T00:15Z	0.684	false
2020-05-23T00:00Z	0.682	false
2020-05-22T23:45Z	0.683	false
2020-05-22T23:30Z	0.681	false
2020-05-22T23:15Z	0.683	false
2020-05-22T23:00Z	0.681	false
2020-05-22T22:45Z	0.682	false
2020-05-22T22:30Z	0.68	false
2020-05-22T22:15Z	0.682	false
2020-05-22T22:00Z	0.679	false
2020-05-22T21:45Z	0.682	false
2020-05-22T21:30Z	0.679	false
2020-05-22T21:15Z	0.68	false
2020-05-22T21:00Z	0.678	false
2020-05-22T20:45Z	0.68	false
2020-05-22T20:30Z	0.677	false
2020-05-22T20:15Z	0.68	false
2020-05-22T20:00Z	0.677	false
2020-05-22T19:45Z	0.68	false
2020-05-22T19:30Z	0.677	false
2020-05-22T19:15Z	0.679	false
2020-05-22T19:00Z	0.677	false
2020-05-22T18:45Z	0.678	false
2020-05-22T18:30Z	0.677	false
2020-05-22T18:15Z	0.678	false
2020-05-22T18:00Z	0.677	false
2020-05-22T17:45Z	0.679	false
2020-05-22T17:30Z	0.677	false
2020-05-22T17:15Z	0.679	false
2020-05-22T17:00Z	0.677	false
2020-05-22T16:45Z	0.679	false
2020-05-22T16:30Z	0.678	false
2020-05-22T16:15Z	0.68	false
2020-05-22T16:00Z	0.678	false
2020-05-22T15:45Z	0.681	false
2020-05-22T15:30Z	0.68	false
2020-05-22T15:15Z	0.682	false
2020-05-22T15:00Z	0.681	false
2020-05-22T14:45Z	0.683	false
2020-05-22T14:30Z	0.681	false
2020-05-22T14:15Z	0.684	false
2020-05-22T14:00Z	0.682	false
2020-05-22T13:45Z	0.684	false
2020-05-22T13:30Z	0.683	false
2020-05-22T13:15Z	0.684	false
2020-05-22T13:00Z	0.683	false
2020-05-22T12:45Z	0.686	false
2020-05-22T12:30Z	0.684	false
2020-05-22T12:15Z	0.686	false
2020-05-22T12:00Z	0.685	false
2020-05-22T11:45Z	0.687	false
2020-05-22T11:30Z	0.686	false
2020-05-22T11:15Z	0.688	false
2020-05-22T11:00Z	0.686	false
2020-05-22T10:45Z	0.689	false
2020-05-22T10:30Z	0.687	false
2020-05-22T10:15Z	0.689	false
2020-05-22T10:00Z	0.688	false
2020-05-22T09:45Z	0.69	false
2020-05-22T09:30Z	0.688	false
2020-05-22T09:15Z	0.691	false
2020-05-22T09:00Z	0.688	false
2020-05-22T08:45Z	0.691	false
2020-05-22T08:30Z	0.689	false
2020-05-22T08:15Z	0.69	false
2020-05-22T08:00Z	0.689	false
2020-05-22T07:45Z	0.691	false
2020-05-22T07:30Z	0.688	false
2020-05-22T07:15Z	0.691	false
2020-05-22T07:00Z	0.688	false
2020-05-22T06:45Z	0.691	false
2020-05-22T06:30Z	0.689	false
2020-05-22T06:15Z	0.691	false
2020-05-22T06:00Z	0.689	false
2020-05-22T05:45Z	0.691	false
2020-05-22T05:30Z	0.689	false
2020-05-22T05:15Z	0.692	false
2020-05-22T05:00Z	0.689	false
2020-05-22T04:45Z	0.691	false
2020-05-22T04:30Z	0.689	false
2020-05-22T04:15Z	0.692	false
2020-05-22T04:00Z	0.69	false
2020-05-22T03:45Z	0.692	false
2020-05-22T03:30Z	0.69	false
2020-05-22T03:15Z	0.693	false
2020-05-22T03:00Z	0.69	false
2020-05-22T02:45Z	0.692	false
2020-05-22T02:30Z	0.69	false
2020-05-22T02:15Z	0.692	false
2020-05-22T02:00Z	0.7	false
2020-05-22T01:45Z	0.701	false
2020-05-22T01:30Z	0.7	false
2020-05-22T01:15Z	0.702	false
2020-05-22T01:00Z	0.699	false
2020-05-22T00:45Z	0.7	false
2020-05-22T00:30Z	0.698	false
2020-05-22T00:15Z	0.7	false
2020-05-22T00:00Z	0.697	false
2020-05-21T23:45Z	0.698	false
2020-05-21T23:30Z	0.696	false
2020-05-21T23:15Z	0.698	false
2020-05-21T23:00Z	0.694	false
2020-05-21T22:45Z	0.696	false
2020-05-21T22:30Z	0.693	false
2020-05-21T22:15Z	0.694	false
2020-05-21T22:00Z	0.692	false
2020-05-21T21:45Z	0.694	false
2020-05-21T21:30Z	0.69	false
2020-05-21T21:15Z	0.692	false
2020-05-21T21:00Z	0.689	false
2020-05-21T20:45Z	0.691	false
2020-05-21T20:30Z	0.688	false
2020-05-21T20:15Z	0.689	false
2020-05-21T20:00Z	0.687	false
2020-05-21T19:45Z	0.689	false
2020-05-21T19:30Z	0.685	false
2020-05-21T19:15Z	0.688	false
2020-05-21T19:00Z	0.685	false
2020-05-21T18:45Z	0.688	false
2020-05-21T18:30Z	0.686	false
2020-05-21T18:15Z	0.688	false
2020-05-21T18:00Z	0.685	false
2020-05-21T17:45Z	0.687	false
2020-05-21T17:30Z	0.685	false
2020-05-21T17:15Z	0.687	false
2020-05-21T17:00Z	0.684	false
2020-05-21T16:45Z	0.686	false
2020-05-21T16:30Z	0.685	false
2020-05-21T16:15Z	0.686	false
2020-05-21T16:00Z	0.684	false
2020-05-21T15:45Z	0.687	false
2020-05-21T15:30Z	0.685	false
2020-05-21T15:15Z	0.684	false
2020-05-21T15:00Z	0.685	false
2020-05-21T14:45Z	0.687	false
2020-05-21T14:30Z	0.685	false
2020-05-21T14:15Z	0.689	false
2020-05-21T14:00Z	0.686	false
2020-05-21T13:45Z	0.689	false
2020-05-21T13:30Z	0.687	false
2020-05-21T13:15Z	0.689	false
2020-05-21T13:00Z	0.687	false
2020-05-21T12:45Z	0.69	false
2020-05-21T12:30Z	0.688	false
2020-05-21T12:15Z	0.691	false
2020-05-21T12:00Z	0.689	false
2020-05-21T11:45Z	0.691	false
2020-05-21T11:30Z	0.689	false
2020-05-21T11:15Z	0.692	false
2020-05-21T11:00Z	0.69	false
2020-05-21T10:45Z	0.692	false
2020-05-21T10:30Z	0.691	false
2020-05-21T10:15Z	0.693	false
2020-05-21T10:00Z	0.691	false
2020-05-21T09:45Z	0.695	false
2020-05-21T09:30Z	0.693	false
2020-05-21T09:15Z	0.696	false
2020-05-21T09:00Z	0.693	false
2020-05-21T08:45Z	0.696	false
2020-05-21T08:30Z	0.693	false
2020-05-21T08:15Z	0.696	false
2020-05-21T08:00Z	0.694	false
2020-05-21T07:45Z	0.696	false
2020-05-21T07:30Z	0.694	false
2020-05-21T07:15Z	0.696	false
2020-05-21T07:00Z	0.693	false
2020-05-21T06:45Z	0.696	false
2020-05-21T06:30Z	0.694	false
2020-05-21T06:15Z	0.696	false
2020-05-21T06:00Z	0.693	false
2020-05-21T05:45Z	0.696	false
2020-05-21T05:30Z	0.694	false
2020-05-21T05:15Z	0.696	false
2020-05-21T05:00Z	0.694	false
2020-05-21T04:45Z	0.696	false
2020-05-21T04:30Z	0.694	false
2020-05-21T04:15Z	0.697	false
2020-05-21T04:00Z	0.695	false
2020-05-21T03:45Z	0.697	false
2020-05-21T03:30Z	0.695	false
2020-05-21T03:15Z	0.697	false
2020-05-21T03:00Z	0.695	false
2020-05-21T02:45Z	0.697	false
2020-05-21T02:30Z	0.695	false
2020-05-21T02:15Z	0.697	false
2020-05-21T02:00Z	0.695	false
2020-05-21T01:45Z	0.696	false
2020-05-21T01:30Z	0.694	false
2020-05-21T01:15Z	0.696	false
2020-05-21T01:00Z	0.694	false
2020-05-21T00:45Z	0.695	false
2020-05-21T00:30Z	0.693	false
2020-05-21T00:15Z	0.695	false
2020-05-21T00:00Z	0.693	false
2020-05-20T23:45Z	0.694	false
2020-05-20T23:30Z	0.692	false
2020-05-20T23:15Z	0.693	false
2020-05-20T23:00Z	0.691	false
2020-05-20T22:45Z	0.692	false
2020-05-20T22:30Z	0.69	false
2020-05-20T22:15Z	0.692	false
2020-05-20T22:00Z	0.688	false
2020-05-20T21:45Z	0.691	false
2020-05-20T21:30Z	0.688	false
2020-05-20T21:15Z	0.69	false
2020-05-20T21:00Z	0.686	false
2020-05-20T20:45Z	0.689	false
2020-05-20T20:30Z	0.686	false
2020-05-20T20:15Z	0.688	false
2020-05-20T20:00Z	0.685	false
2020-05-20T19:45Z	0.687	false
2020-05-20T19:30Z	0.685	false
2020-05-20T19:15Z	0.687	false
2020-05-20T19:00Z	0.684	false
2020-05-20T18:45Z	0.687	false
2020-05-20T18:30Z	0.684	false
2020-05-20T18:15Z	0.686	false
2020-05-20T18:00Z	0.684	false
2020-05-20T17:45Z	0.686	false
2020-05-20T17:30Z	0.683	false
2020-05-20T17:15Z	0.686	false
2020-05-20T17:00Z	0.683	false
2020-05-20T16:45Z	0.688	false
2020-05-20T16:30Z	0.686	false
2020-05-20T16:15Z	0.688	false
2020-05-20T16:00Z	0.686	false
2020-05-20T15:45Z	0.688	false
2020-05-20T15:30Z	0.664	false
2020-05-20T15:15Z	0.665	false
2020-05-20T15:00Z	0.664	false
2020-05-20T14:45Z	0.665	false
2020-05-20T14:30Z	0.664	false
2020-05-20T14:15Z	0.666	false
2020-05-20T14:00Z	0.664	false
2020-05-20T13:45Z	0.666	false
2020-05-20T13:30Z	0.665	false
2020-05-20T13:15Z	0.666	false
2020-05-20T13:00Z	0.665	false
2020-05-20T12:45Z	0.667	false
2020-05-20T12:30Z	0.665	false
2020-05-20T12:15Z	0.668	false
2020-05-20T12:00Z	0.667	false
2020-05-20T11:45Z	0.669	false
2020-05-20T11:30Z	0.668	false
2020-05-20T11:15Z	0.669	false
2020-05-20T11:00Z	0.668	false
2020-05-20T10:45Z	0.67	false
2020-05-20T10:30Z	0.675	false
2020-05-20T10:15Z	0.676	false
2020-05-20T10:00Z	0.675	false
2020-05-20T09:45Z	0.676	false
2020-05-20T09:30Z	0.675	false
2020-05-20T09:15Z	0.677	false
2020-05-20T09:00Z	0.675	false
2020-05-20T08:45Z	0.677	false
2020-05-20T08:30Z	0.675	false
2020-05-20T08:15Z	0.677	false
2020-05-20T08:00Z	0.675	false
2020-05-20T07:45Z	0.677	false
2020-05-20T07:30Z	0.676	false
2020-05-20T07:15Z	0.679	false
2020-05-20T07:00Z	0.677	false
2020-05-20T06:45Z	0.679	false
2020-05-20T06:30Z	0.678	false
2020-05-20T06:15Z	0.68	false
2020-05-20T06:00Z	0.679	false
2020-05-20T05:45Z	0.68	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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