River level River Colne at Stanwell Mill

Check for flood warnings in this area

Latest recorded level 0.70m at 1:00pm Wednesday 23 October 2019.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.00m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2019-10-23T12:00Z	0.704	false
2019-10-23T12:00Z	0.704	false
2019-10-23T11:45Z	0.703	false
2019-10-23T11:45Z	0.703	false
2019-10-23T11:30Z	0.705	false
2019-10-23T11:30Z	0.705	false
2019-10-23T11:15Z	0.706	false
2019-10-23T11:15Z	0.706	false
2019-10-23T11:00Z	0.705	false
2019-10-23T11:00Z	0.705	false
2019-10-23T10:45Z	0.706	false
2019-10-23T10:45Z	0.706	false
2019-10-23T10:30Z	0.705	false
2019-10-23T10:30Z	0.705	false
2019-10-23T10:15Z	0.707	false
2019-10-23T10:15Z	0.707	false
2019-10-23T10:00Z	0.706	false
2019-10-23T10:00Z	0.706	false
2019-10-23T09:45Z	0.707	false
2019-10-23T09:45Z	0.707	false
2019-10-23T09:30Z	0.707	false
2019-10-23T09:30Z	0.707	false
2019-10-23T09:15Z	0.708	false
2019-10-23T09:15Z	0.708	false
2019-10-23T09:00Z	0.707	false
2019-10-23T09:00Z	0.707	false
2019-10-23T08:45Z	0.707	false
2019-10-23T08:45Z	0.707	false
2019-10-23T08:30Z	0.707	false
2019-10-23T08:30Z	0.707	false
2019-10-23T08:15Z	0.707	false
2019-10-23T08:15Z	0.707	false
2019-10-23T08:00Z	0.708	false
2019-10-23T08:00Z	0.708	false
2019-10-23T07:45Z	0.708	false
2019-10-23T07:45Z	0.708	false
2019-10-23T07:30Z	0.708	false
2019-10-23T07:30Z	0.708	false
2019-10-23T07:15Z	0.708	false
2019-10-23T07:15Z	0.708	false
2019-10-23T07:00Z	0.709	false
2019-10-23T07:00Z	0.709	false
2019-10-23T06:45Z	0.71	false
2019-10-23T06:45Z	0.71	false
2019-10-23T06:30Z	0.71	false
2019-10-23T06:30Z	0.71	false
2019-10-23T06:15Z	0.71	false
2019-10-23T06:15Z	0.71	false
2019-10-23T06:00Z	0.709	false
2019-10-23T06:00Z	0.709	false
2019-10-23T05:45Z	0.71	false
2019-10-23T05:45Z	0.71	false
2019-10-23T05:30Z	0.709	false
2019-10-23T05:30Z	0.709	false
2019-10-23T05:15Z	0.709	false
2019-10-23T05:15Z	0.709	false
2019-10-23T05:00Z	0.709	false
2019-10-23T05:00Z	0.709	false
2019-10-23T04:45Z	0.71	false
2019-10-23T04:45Z	0.71	false
2019-10-23T04:30Z	0.709	false
2019-10-23T04:30Z	0.709	false
2019-10-23T04:15Z	0.711	false
2019-10-23T04:15Z	0.711	false
2019-10-23T04:00Z	0.71	false
2019-10-23T04:00Z	0.71	false
2019-10-23T03:45Z	0.711	false
2019-10-23T03:45Z	0.711	false
2019-10-23T03:30Z	0.709	false
2019-10-23T03:30Z	0.709	false
2019-10-23T03:15Z	0.71	false
2019-10-23T03:15Z	0.71	false
2019-10-23T03:00Z	0.709	false
2019-10-23T03:00Z	0.709	false
2019-10-23T02:45Z	0.71	false
2019-10-23T02:45Z	0.71	false
2019-10-23T02:30Z	0.709	false
2019-10-23T02:30Z	0.709	false
2019-10-23T02:15Z	0.71	false
2019-10-23T02:15Z	0.71	false
2019-10-23T02:00Z	0.71	false
2019-10-23T02:00Z	0.71	false
2019-10-23T01:45Z	0.711	false
2019-10-23T01:45Z	0.711	false
2019-10-23T01:30Z	0.71	false
2019-10-23T01:30Z	0.71	false
2019-10-23T01:15Z	0.71	false
2019-10-23T01:15Z	0.71	false
2019-10-23T01:00Z	0.708	false
2019-10-23T01:00Z	0.708	false
2019-10-23T00:45Z	0.708	false
2019-10-23T00:45Z	0.708	false
2019-10-23T00:30Z	0.707	false
2019-10-23T00:30Z	0.707	false
2019-10-23T00:15Z	0.707	false
2019-10-23T00:15Z	0.707	false
2019-10-23T00:00Z	0.705	false
2019-10-23T00:00Z	0.705	false
2019-10-22T23:45Z	0.704	false
2019-10-22T23:45Z	0.704	false
2019-10-22T23:30Z	0.703	false
2019-10-22T23:30Z	0.703	false
2019-10-22T23:15Z	0.702	false
2019-10-22T23:15Z	0.702	false
2019-10-22T23:00Z	0.7	false
2019-10-22T23:00Z	0.7	false
2019-10-22T22:45Z	0.7	false
2019-10-22T22:45Z	0.7	false
2019-10-22T22:30Z	0.697	false
2019-10-22T22:30Z	0.697	false
2019-10-22T22:15Z	0.696	false
2019-10-22T22:15Z	0.696	false
2019-10-22T22:00Z	0.694	false
2019-10-22T22:00Z	0.694	false
2019-10-22T21:45Z	0.693	false
2019-10-22T21:45Z	0.693	false
2019-10-22T21:30Z	0.692	false
2019-10-22T21:30Z	0.692	false
2019-10-22T21:15Z	0.691	false
2019-10-22T21:15Z	0.691	false
2019-10-22T21:00Z	0.689	false
2019-10-22T21:00Z	0.689	false
2019-10-22T20:45Z	0.688	false
2019-10-22T20:45Z	0.688	false
2019-10-22T20:30Z	0.688	false
2019-10-22T20:30Z	0.688	false
2019-10-22T20:15Z	0.687	false
2019-10-22T20:15Z	0.687	false
2019-10-22T20:00Z	0.686	false
2019-10-22T20:00Z	0.686	false
2019-10-22T19:45Z	0.686	false
2019-10-22T19:45Z	0.686	false
2019-10-22T19:30Z	0.684	false
2019-10-22T19:30Z	0.684	false
2019-10-22T19:15Z	0.685	false
2019-10-22T19:15Z	0.685	false
2019-10-22T19:00Z	0.684	false
2019-10-22T19:00Z	0.684	false
2019-10-22T18:45Z	0.685	false
2019-10-22T18:45Z	0.685	false
2019-10-22T18:30Z	0.684	false
2019-10-22T18:30Z	0.684	false
2019-10-22T18:15Z	0.685	false
2019-10-22T18:15Z	0.685	false
2019-10-22T18:00Z	0.685	false
2019-10-22T18:00Z	0.685	false
2019-10-22T17:45Z	0.686	false
2019-10-22T17:45Z	0.686	false
2019-10-22T17:30Z	0.686	false
2019-10-22T17:30Z	0.686	false
2019-10-22T17:15Z	0.687	false
2019-10-22T17:15Z	0.687	false
2019-10-22T17:00Z	0.688	false
2019-10-22T17:00Z	0.688	false
2019-10-22T16:45Z	0.689	false
2019-10-22T16:45Z	0.689	false
2019-10-22T16:30Z	0.689	false
2019-10-22T16:30Z	0.689	false
2019-10-22T16:15Z	0.69	false
2019-10-22T16:15Z	0.69	false
2019-10-22T16:00Z	0.69	false
2019-10-22T16:00Z	0.69	false
2019-10-22T15:45Z	0.691	false
2019-10-22T15:45Z	0.691	false
2019-10-22T15:30Z	0.691	false
2019-10-22T15:30Z	0.691	false
2019-10-22T15:15Z	0.692	false
2019-10-22T15:15Z	0.692	false
2019-10-22T15:00Z	0.692	false
2019-10-22T15:00Z	0.692	false
2019-10-22T14:45Z	0.693	false
2019-10-22T14:45Z	0.693	false
2019-10-22T14:30Z	0.693	false
2019-10-22T14:30Z	0.693	false
2019-10-22T14:15Z	0.694	false
2019-10-22T14:15Z	0.694	false
2019-10-22T14:00Z	0.694	false
2019-10-22T14:00Z	0.694	false
2019-10-22T13:45Z	0.695	false
2019-10-22T13:45Z	0.695	false
2019-10-22T13:30Z	0.696	false
2019-10-22T13:30Z	0.696	false
2019-10-22T13:15Z	0.696	false
2019-10-22T13:15Z	0.696	false
2019-10-22T13:00Z	0.696	false
2019-10-22T13:00Z	0.696	false
2019-10-22T12:45Z	0.696	false
2019-10-22T12:45Z	0.696	false
2019-10-22T12:30Z	0.697	false
2019-10-22T12:30Z	0.697	false
2019-10-22T12:15Z	0.697	false
2019-10-22T12:15Z	0.697	false
2019-10-22T12:00Z	0.698	false
2019-10-22T12:00Z	0.698	false
2019-10-22T11:45Z	0.698	false
2019-10-22T11:45Z	0.698	false
2019-10-22T11:30Z	0.698	false
2019-10-22T11:30Z	0.698	false
2019-10-22T11:15Z	0.699	false
2019-10-22T11:15Z	0.699	false
2019-10-22T11:00Z	0.699	false
2019-10-22T11:00Z	0.699	false
2019-10-22T10:45Z	0.7	false
2019-10-22T10:45Z	0.7	false
2019-10-22T10:30Z	0.699	false
2019-10-22T10:30Z	0.699	false
2019-10-22T10:15Z	0.701	false
2019-10-22T10:15Z	0.701	false
2019-10-22T10:00Z	0.699	false
2019-10-22T10:00Z	0.699	false
2019-10-22T09:45Z	0.699	false
2019-10-22T09:45Z	0.699	false
2019-10-22T09:30Z	0.699	false
2019-10-22T09:30Z	0.699	false
2019-10-22T09:15Z	0.7	false
2019-10-22T09:15Z	0.7	false
2019-10-22T09:00Z	0.699	false
2019-10-22T09:00Z	0.699	false
2019-10-22T08:45Z	0.7	false
2019-10-22T08:45Z	0.7	false
2019-10-22T08:30Z	0.699	false
2019-10-22T08:30Z	0.699	false
2019-10-22T08:15Z	0.7	false
2019-10-22T08:15Z	0.7	false
2019-10-22T08:00Z	0.697	false
2019-10-22T08:00Z	0.697	false
2019-10-22T07:45Z	0.704	false
2019-10-22T07:45Z	0.704	false
2019-10-22T07:30Z	0.704	false
2019-10-22T07:30Z	0.704	false
2019-10-22T07:15Z	0.705	false
2019-10-22T07:15Z	0.705	false
2019-10-22T07:00Z	0.704	false
2019-10-22T07:00Z	0.704	false
2019-10-22T06:45Z	0.706	false
2019-10-22T06:45Z	0.706	false
2019-10-22T06:30Z	0.705	false
2019-10-22T06:30Z	0.705	false
2019-10-22T06:15Z	0.706	false
2019-10-22T06:15Z	0.706	false
2019-10-22T06:00Z	0.706	false
2019-10-22T06:00Z	0.706	false
2019-10-22T05:45Z	0.706	false
2019-10-22T05:45Z	0.706	false
2019-10-22T05:30Z	0.706	false
2019-10-22T05:30Z	0.706	false
2019-10-22T05:15Z	0.707	false
2019-10-22T05:15Z	0.707	false
2019-10-22T05:00Z	0.706	false
2019-10-22T05:00Z	0.706	false
2019-10-22T04:45Z	0.707	false
2019-10-22T04:45Z	0.707	false
2019-10-22T04:30Z	0.706	false
2019-10-22T04:30Z	0.706	false
2019-10-22T04:15Z	0.707	false
2019-10-22T04:15Z	0.707	false
2019-10-22T04:00Z	0.706	false
2019-10-22T04:00Z	0.706	false
2019-10-22T03:45Z	0.706	false
2019-10-22T03:45Z	0.706	false
2019-10-22T03:30Z	0.705	false
2019-10-22T03:30Z	0.705	false
2019-10-22T03:15Z	0.706	false
2019-10-22T03:15Z	0.706	false
2019-10-22T03:00Z	0.705	false
2019-10-22T03:00Z	0.705	false
2019-10-22T02:45Z	0.705	false
2019-10-22T02:45Z	0.705	false
2019-10-22T02:30Z	0.703	false
2019-10-22T02:30Z	0.703	false
2019-10-22T02:15Z	0.703	false
2019-10-22T02:15Z	0.703	false
2019-10-22T02:00Z	0.703	false
2019-10-22T02:00Z	0.703	false
2019-10-22T01:45Z	0.702	false
2019-10-22T01:45Z	0.702	false
2019-10-22T01:30Z	0.701	false
2019-10-22T01:30Z	0.701	false
2019-10-22T01:15Z	0.701	false
2019-10-22T01:15Z	0.701	false
2019-10-22T01:00Z	0.699	false
2019-10-22T01:00Z	0.699	false
2019-10-22T00:45Z	0.698	false
2019-10-22T00:45Z	0.698	false
2019-10-22T00:30Z	0.696	false
2019-10-22T00:30Z	0.696	false
2019-10-22T00:15Z	0.694	false
2019-10-22T00:15Z	0.694	false
2019-10-22T00:00Z	0.691	false
2019-10-22T00:00Z	0.691	false
2019-10-21T23:45Z	0.689	false
2019-10-21T23:45Z	0.689	false
2019-10-21T23:30Z	0.686	false
2019-10-21T23:30Z	0.686	false
2019-10-21T23:15Z	0.683	false
2019-10-21T23:15Z	0.683	false
2019-10-21T23:00Z	0.679	false
2019-10-21T23:00Z	0.679	false
2019-10-21T22:45Z	0.676	false
2019-10-21T22:45Z	0.676	false
2019-10-21T22:30Z	0.672	false
2019-10-21T22:30Z	0.672	false
2019-10-21T22:15Z	0.667	false
2019-10-21T22:15Z	0.667	false
2019-10-21T22:00Z	0.663	false
2019-10-21T22:00Z	0.663	false
2019-10-21T21:45Z	0.658	false
2019-10-21T21:45Z	0.658	false
2019-10-21T21:30Z	0.652	false
2019-10-21T21:30Z	0.652	false
2019-10-21T21:15Z	0.648	false
2019-10-21T21:15Z	0.648	false
2019-10-21T21:00Z	0.643	false
2019-10-21T21:00Z	0.643	false
2019-10-21T20:45Z	0.639	false
2019-10-21T20:45Z	0.639	false
2019-10-21T20:30Z	0.635	false
2019-10-21T20:30Z	0.635	false
2019-10-21T20:15Z	0.631	false
2019-10-21T20:15Z	0.631	false
2019-10-21T20:00Z	0.627	false
2019-10-21T20:00Z	0.627	false
2019-10-21T19:45Z	0.624	false
2019-10-21T19:45Z	0.624	false
2019-10-21T19:30Z	0.619	false
2019-10-21T19:30Z	0.619	false
2019-10-21T19:15Z	0.618	false
2019-10-21T19:15Z	0.618	false
2019-10-21T19:00Z	0.615	false
2019-10-21T19:00Z	0.615	false
2019-10-21T18:45Z	0.614	false
2019-10-21T18:45Z	0.614	false
2019-10-21T18:30Z	0.612	false
2019-10-21T18:30Z	0.612	false
2019-10-21T18:15Z	0.612	false
2019-10-21T18:15Z	0.612	false
2019-10-21T18:00Z	0.611	false
2019-10-21T18:00Z	0.611	false
2019-10-21T18:00Z	0.611	false
2019-10-21T18:00Z	0.611	false
2019-10-21T17:45Z	0.612	false
2019-10-21T17:45Z	0.612	false
2019-10-21T17:45Z	0.612	false
2019-10-21T17:45Z	0.612	false
2019-10-21T17:30Z	0.612	false
2019-10-21T17:30Z	0.612	false
2019-10-21T17:30Z	0.612	false
2019-10-21T17:30Z	0.612	false
2019-10-21T17:15Z	0.613	false
2019-10-21T17:15Z	0.613	false
2019-10-21T17:15Z	0.613	false
2019-10-21T17:15Z	0.613	false
2019-10-21T17:00Z	0.614	false
2019-10-21T17:00Z	0.614	false
2019-10-21T17:00Z	0.614	false
2019-10-21T17:00Z	0.614	false
2019-10-21T16:45Z	0.616	false
2019-10-21T16:45Z	0.616	false
2019-10-21T16:45Z	0.616	false
2019-10-21T16:45Z	0.616	false
2019-10-21T16:30Z	0.616	false
2019-10-21T16:30Z	0.616	false
2019-10-21T16:30Z	0.616	false
2019-10-21T16:30Z	0.616	false
2019-10-21T16:15Z	0.619	false
2019-10-21T16:15Z	0.619	false
2019-10-21T16:15Z	0.619	false
2019-10-21T16:15Z	0.619	false
2019-10-21T16:00Z	0.619	false
2019-10-21T16:00Z	0.619	false
2019-10-21T16:00Z	0.619	false
2019-10-21T16:00Z	0.619	false
2019-10-21T15:45Z	0.622	false
2019-10-21T15:45Z	0.622	false
2019-10-21T15:45Z	0.622	false
2019-10-21T15:45Z	0.622	false
2019-10-21T15:30Z	0.623	false
2019-10-21T15:30Z	0.623	false
2019-10-21T15:30Z	0.623	false
2019-10-21T15:30Z	0.623	false
2019-10-21T15:15Z	0.625	false
2019-10-21T15:15Z	0.625	false
2019-10-21T15:15Z	0.625	false
2019-10-21T15:15Z	0.625	false
2019-10-21T15:00Z	0.627	false
2019-10-21T15:00Z	0.627	false
2019-10-21T15:00Z	0.627	false
2019-10-21T15:00Z	0.627	false
2019-10-21T14:45Z	0.629	false
2019-10-21T14:45Z	0.629	false
2019-10-21T14:45Z	0.629	false
2019-10-21T14:45Z	0.629	false
2019-10-21T14:30Z	0.631	false
2019-10-21T14:30Z	0.631	false
2019-10-21T14:30Z	0.631	false
2019-10-21T14:30Z	0.631	false
2019-10-21T14:15Z	0.633	false
2019-10-21T14:15Z	0.633	false
2019-10-21T14:15Z	0.633	false
2019-10-21T14:15Z	0.633	false
2019-10-21T14:00Z	0.633	false
2019-10-21T14:00Z	0.633	false
2019-10-21T14:00Z	0.633	false
2019-10-21T14:00Z	0.633	false
2019-10-21T13:45Z	0.633	false
2019-10-21T13:45Z	0.633	false
2019-10-21T13:45Z	0.633	false
2019-10-21T13:45Z	0.633	false
2019-10-21T13:30Z	0.632	false
2019-10-21T13:30Z	0.632	false
2019-10-21T13:30Z	0.632	false
2019-10-21T13:30Z	0.632	false
2019-10-21T13:15Z	0.625	false
2019-10-21T13:15Z	0.625	false
2019-10-21T13:15Z	0.625	false
2019-10-21T13:15Z	0.625	false
2019-10-21T13:00Z	0.616	false
2019-10-21T13:00Z	0.616	false
2019-10-21T13:00Z	0.616	false
2019-10-21T13:00Z	0.616	false
2019-10-21T12:45Z	0.618	false
2019-10-21T12:45Z	0.618	false
2019-10-21T12:45Z	0.618	false
2019-10-21T12:45Z	0.618	false
2019-10-21T12:30Z	0.621	false
2019-10-21T12:30Z	0.621	false
2019-10-21T12:30Z	0.621	false
2019-10-21T12:30Z	0.621	false
2019-10-21T12:15Z	0.623	false
2019-10-21T12:15Z	0.623	false
2019-10-21T12:15Z	0.623	false
2019-10-21T12:15Z	0.623	false
2019-10-21T12:00Z	0.625	false
2019-10-21T12:00Z	0.625	false
2019-10-21T11:45Z	0.627	false
2019-10-21T11:45Z	0.627	false
2019-10-21T11:30Z	0.629	false
2019-10-21T11:30Z	0.629	false
2019-10-21T11:15Z	0.63	false
2019-10-21T11:15Z	0.63	false
2019-10-21T11:00Z	0.632	false
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2019-10-19T02:30Z	0.664	false
2019-10-19T02:15Z	0.665	false
2019-10-19T02:15Z	0.665	false
2019-10-19T02:00Z	0.665	false
2019-10-19T02:00Z	0.665	false
2019-10-19T01:45Z	0.665	false
2019-10-19T01:45Z	0.665	false
2019-10-19T01:30Z	0.666	false
2019-10-19T01:30Z	0.666	false
2019-10-19T01:15Z	0.667	false
2019-10-19T01:15Z	0.667	false
2019-10-19T01:00Z	0.666	false
2019-10-19T01:00Z	0.666	false
2019-10-19T00:45Z	0.667	false
2019-10-19T00:45Z	0.667	false
2019-10-19T00:30Z	0.666	false
2019-10-19T00:30Z	0.666	false
2019-10-19T00:15Z	0.667	false
2019-10-19T00:15Z	0.667	false
2019-10-19T00:00Z	0.666	false
2019-10-19T00:00Z	0.666	false
2019-10-18T23:45Z	0.667	false
2019-10-18T23:45Z	0.667	false
2019-10-18T23:30Z	0.667	false
2019-10-18T23:30Z	0.667	false
2019-10-18T23:15Z	0.667	false
2019-10-18T23:15Z	0.667	false
2019-10-18T23:00Z	0.666	false
2019-10-18T23:00Z	0.666	false
2019-10-18T22:45Z	0.666	false
2019-10-18T22:45Z	0.666	false
2019-10-18T22:30Z	0.666	false
2019-10-18T22:30Z	0.666	false
2019-10-18T22:15Z	0.666	false
2019-10-18T22:15Z	0.666	false
2019-10-18T22:00Z	0.665	false
2019-10-18T22:00Z	0.665	false
2019-10-18T21:45Z	0.665	false
2019-10-18T21:45Z	0.665	false
2019-10-18T21:30Z	0.664	false
2019-10-18T21:30Z	0.664	false
2019-10-18T21:15Z	0.664	false
2019-10-18T21:15Z	0.664	false
2019-10-18T21:00Z	0.664	false
2019-10-18T21:00Z	0.664	false
2019-10-18T20:45Z	0.663	false
2019-10-18T20:45Z	0.663	false
2019-10-18T20:30Z	0.663	false
2019-10-18T20:30Z	0.663	false
2019-10-18T20:15Z	0.662	false
2019-10-18T20:15Z	0.662	false
2019-10-18T20:00Z	0.661	false
2019-10-18T20:00Z	0.661	false
2019-10-18T19:45Z	0.661	false
2019-10-18T19:45Z	0.661	false
2019-10-18T19:30Z	0.66	false
2019-10-18T19:30Z	0.66	false
2019-10-18T19:15Z	0.66	false
2019-10-18T19:15Z	0.66	false
2019-10-18T19:00Z	0.658	false
2019-10-18T19:00Z	0.658	false
2019-10-18T18:45Z	0.658	false
2019-10-18T18:45Z	0.658	false
2019-10-18T18:30Z	0.656	false
2019-10-18T18:30Z	0.656	false
2019-10-18T18:15Z	0.657	false
2019-10-18T18:15Z	0.657	false
2019-10-18T18:00Z	0.656	false
2019-10-18T18:00Z	0.656	false
2019-10-18T17:45Z	0.656	false
2019-10-18T17:45Z	0.656	false
2019-10-18T17:30Z	0.655	false
2019-10-18T17:30Z	0.655	false
2019-10-18T17:15Z	0.655	false
2019-10-18T17:15Z	0.655	false
2019-10-18T17:00Z	0.654	false
2019-10-18T17:00Z	0.654	false
2019-10-18T16:45Z	0.655	false
2019-10-18T16:45Z	0.655	false
2019-10-18T16:30Z	0.654	false
2019-10-18T16:30Z	0.654	false
2019-10-18T16:15Z	0.654	false
2019-10-18T16:15Z	0.654	false
2019-10-18T16:00Z	0.653	false
2019-10-18T16:00Z	0.653	false
2019-10-18T15:45Z	0.653	false
2019-10-18T15:45Z	0.653	false
2019-10-18T15:30Z	0.653	false
2019-10-18T15:30Z	0.653	false
2019-10-18T15:15Z	0.653	false
2019-10-18T15:15Z	0.653	false
2019-10-18T15:00Z	0.652	false
2019-10-18T15:00Z	0.652	false
2019-10-18T14:45Z	0.652	false
2019-10-18T14:45Z	0.652	false
2019-10-18T14:30Z	0.652	false
2019-10-18T14:30Z	0.652	false
2019-10-18T14:15Z	0.652	false
2019-10-18T14:15Z	0.652	false
2019-10-18T14:00Z	0.652	false
2019-10-18T14:00Z	0.652	false
2019-10-18T13:45Z	0.65	false
2019-10-18T13:45Z	0.65	false
2019-10-18T13:30Z	0.65	false
2019-10-18T13:30Z	0.65	false
2019-10-18T13:15Z	0.65	false
2019-10-18T13:15Z	0.65	false
2019-10-18T13:00Z	0.649	false
2019-10-18T13:00Z	0.649	false
2019-10-18T12:45Z	0.648	false
2019-10-18T12:45Z	0.648	false
2019-10-18T12:30Z	0.648	false
2019-10-18T12:30Z	0.648	false
2019-10-18T12:15Z	0.647	false
2019-10-18T12:15Z	0.647	false

Forecast data

Key information

• Station name: Stanwell Mill
• Station ID: 7207
• River name: River Colne
• Typical range: 0.21m to 1.00m
• 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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