River level River Colne at Stanwell Mill

Check for flood warnings in this area

Latest recorded level 0.75m at 11:00pm Saturday 23 January 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
2021-01-23T23:00Z	0.746	false
2021-01-23T22:45Z	0.749	false
2021-01-23T22:30Z	0.747	false
2021-01-23T22:15Z	0.748	false
2021-01-23T22:00Z	0.748	false
2021-01-23T21:45Z	0.748	false
2021-01-23T21:30Z	0.748	false
2021-01-23T21:15Z	0.749	false
2021-01-23T21:00Z	0.747	false
2021-01-23T20:45Z	0.749	false
2021-01-23T20:30Z	0.748	false
2021-01-23T20:15Z	0.749	false
2021-01-23T20:00Z	0.748	false
2021-01-23T19:45Z	0.75	false
2021-01-23T19:30Z	0.749	false
2021-01-23T19:15Z	0.751	false
2021-01-23T19:00Z	0.749	false
2021-01-23T18:45Z	0.752	false
2021-01-23T18:30Z	0.75	false
2021-01-23T18:15Z	0.752	false
2021-01-23T18:00Z	0.751	false
2021-01-23T17:45Z	0.751	false
2021-01-23T17:30Z	0.75	false
2021-01-23T17:15Z	0.753	false
2021-01-23T17:00Z	0.752	false
2021-01-23T16:45Z	0.753	false
2021-01-23T16:30Z	0.751	false
2021-01-23T16:15Z	0.754	false
2021-01-23T16:00Z	0.753	false
2021-01-23T15:45Z	0.754	false
2021-01-23T15:30Z	0.753	false
2021-01-23T15:15Z	0.755	false
2021-01-23T15:00Z	0.753	false
2021-01-23T14:45Z	0.756	false
2021-01-23T14:30Z	0.754	false
2021-01-23T14:15Z	0.755	false
2021-01-23T14:00Z	0.753	false
2021-01-23T13:45Z	0.755	false
2021-01-23T13:30Z	0.753	false
2021-01-23T13:15Z	0.755	false
2021-01-23T13:00Z	0.753	false
2021-01-23T12:45Z	0.755	false
2021-01-23T12:30Z	0.753	false
2021-01-23T12:15Z	0.755	false
2021-01-23T12:00Z	0.754	false
2021-01-23T11:45Z	0.755	false
2021-01-23T11:30Z	0.753	false
2021-01-23T11:15Z	0.755	false
2021-01-23T11:00Z	0.753	false
2021-01-23T10:45Z	0.754	false
2021-01-23T10:30Z	0.754	false
2021-01-23T10:15Z	0.754	false
2021-01-23T10:00Z	0.753	false
2021-01-23T09:45Z	0.755	false
2021-01-23T09:30Z	0.754	false
2021-01-23T09:15Z	0.756	false
2021-01-23T09:00Z	0.754	false
2021-01-23T08:45Z	0.755	false
2021-01-23T08:30Z	0.755	false
2021-01-23T08:15Z	0.756	false
2021-01-23T08:00Z	0.754	false
2021-01-23T07:45Z	0.755	false
2021-01-23T07:30Z	0.754	false
2021-01-23T07:15Z	0.756	false
2021-01-23T07:00Z	0.754	false
2021-01-23T06:45Z	0.756	false
2021-01-23T06:30Z	0.755	false
2021-01-23T06:15Z	0.758	false
2021-01-23T06:00Z	0.756	false
2021-01-23T05:45Z	0.757	false
2021-01-23T05:30Z	0.756	false
2021-01-23T05:15Z	0.758	false
2021-01-23T05:00Z	0.757	false
2021-01-23T04:45Z	0.76	false
2021-01-23T04:30Z	0.758	false
2021-01-23T04:15Z	0.76	false
2021-01-23T04:00Z	0.758	false
2021-01-23T03:45Z	0.759	false
2021-01-23T03:30Z	0.76	false
2021-01-23T03:15Z	0.76	false
2021-01-23T03:00Z	0.759	false
2021-01-23T02:45Z	0.761	false
2021-01-23T02:30Z	0.759	false
2021-01-23T02:15Z	0.761	false
2021-01-23T02:00Z	0.76	false
2021-01-23T01:45Z	0.761	false
2021-01-23T01:30Z	0.761	false
2021-01-23T01:15Z	0.763	false
2021-01-23T01:00Z	0.761	false
2021-01-23T00:45Z	0.763	false
2021-01-23T00:30Z	0.761	false
2021-01-23T00:15Z	0.764	false
2021-01-23T00:00Z	0.761	false
2021-01-22T23:45Z	0.764	false
2021-01-22T23:30Z	0.762	false
2021-01-22T23:15Z	0.764	false
2021-01-22T23:00Z	0.763	false
2021-01-22T22:45Z	0.764	false
2021-01-22T22:30Z	0.764	false
2021-01-22T22:15Z	0.765	false
2021-01-22T22:00Z	0.763	false
2021-01-22T21:45Z	0.764	false
2021-01-22T21:30Z	0.763	false
2021-01-22T21:15Z	0.765	false
2021-01-22T21:00Z	0.764	false
2021-01-22T20:45Z	0.766	false
2021-01-22T20:30Z	0.764	false
2021-01-22T20:15Z	0.766	false
2021-01-22T20:00Z	0.765	false
2021-01-22T19:45Z	0.767	false
2021-01-22T19:30Z	0.765	false
2021-01-22T19:15Z	0.766	false
2021-01-22T19:00Z	0.764	false
2021-01-22T18:45Z	0.766	false
2021-01-22T18:30Z	0.766	false
2021-01-22T18:15Z	0.767	false
2021-01-22T18:00Z	0.766	false
2021-01-22T17:45Z	0.767	false
2021-01-22T17:30Z	0.766	false
2021-01-22T17:15Z	0.769	false
2021-01-22T17:00Z	0.766	false
2021-01-22T16:45Z	0.769	false
2021-01-22T16:30Z	0.768	false
2021-01-22T16:15Z	0.769	false
2021-01-22T16:00Z	0.768	false
2021-01-22T15:45Z	0.769	false
2021-01-22T15:30Z	0.768	false
2021-01-22T15:15Z	0.77	false
2021-01-22T15:00Z	0.768	false
2021-01-22T14:45Z	0.771	false
2021-01-22T14:30Z	0.769	false
2021-01-22T14:15Z	0.771	false
2021-01-22T14:00Z	0.769	false
2021-01-22T13:45Z	0.77	false
2021-01-22T13:30Z	0.769	false
2021-01-22T13:15Z	0.772	false
2021-01-22T13:00Z	0.769	false
2021-01-22T12:45Z	0.772	false
2021-01-22T12:30Z	0.769	false
2021-01-22T12:15Z	0.771	false
2021-01-22T12:00Z	0.769	false
2021-01-22T11:45Z	0.771	false
2021-01-22T11:30Z	0.77	false
2021-01-22T11:15Z	0.77	false
2021-01-22T11:00Z	0.769	false
2021-01-22T10:45Z	0.772	false
2021-01-22T10:30Z	0.77	false
2021-01-22T10:15Z	0.771	false
2021-01-22T10:00Z	0.77	false
2021-01-22T09:45Z	0.772	false
2021-01-22T09:30Z	0.77	false
2021-01-22T09:15Z	0.772	false
2021-01-22T09:00Z	0.77	false
2021-01-22T08:45Z	0.771	false
2021-01-22T08:30Z	0.77	false
2021-01-22T08:15Z	0.771	false
2021-01-22T08:00Z	0.77	false
2021-01-22T07:45Z	0.772	false
2021-01-22T07:30Z	0.77	false
2021-01-22T07:15Z	0.772	false
2021-01-22T07:00Z	0.77	false
2021-01-22T06:45Z	0.772	false
2021-01-22T06:30Z	0.771	false
2021-01-22T06:15Z	0.772	false
2021-01-22T06:00Z	0.771	false
2021-01-22T05:45Z	0.772	false
2021-01-22T05:30Z	0.77	false
2021-01-22T05:15Z	0.772	false
2021-01-22T05:00Z	0.771	false
2021-01-22T04:45Z	0.772	false
2021-01-22T04:30Z	0.77	false
2021-01-22T04:15Z	0.772	false
2021-01-22T04:00Z	0.77	false
2021-01-22T03:45Z	0.773	false
2021-01-22T03:30Z	0.771	false
2021-01-22T03:15Z	0.772	false
2021-01-22T03:00Z	0.77	false
2021-01-22T02:45Z	0.772	false
2021-01-22T02:30Z	0.771	false
2021-01-22T02:15Z	0.772	false
2021-01-22T02:00Z	0.769	false
2021-01-22T01:45Z	0.772	false
2021-01-22T01:30Z	0.771	false
2021-01-22T01:15Z	0.773	false
2021-01-22T01:00Z	0.771	false
2021-01-22T00:45Z	0.772	false
2021-01-22T00:30Z	0.77	false
2021-01-22T00:15Z	0.772	false
2021-01-22T00:00Z	0.771	false
2021-01-21T23:45Z	0.773	false
2021-01-21T23:30Z	0.77	false
2021-01-21T23:15Z	0.773	false
2021-01-21T23:00Z	0.77	false
2021-01-21T22:45Z	0.773	false
2021-01-21T22:30Z	0.771	false
2021-01-21T22:15Z	0.773	false
2021-01-21T22:00Z	0.771	false
2021-01-21T21:45Z	0.773	false
2021-01-21T21:30Z	0.771	false
2021-01-21T21:15Z	0.774	false
2021-01-21T21:00Z	0.773	false
2021-01-21T20:45Z	0.774	false
2021-01-21T20:30Z	0.772	false
2021-01-21T20:15Z	0.774	false
2021-01-21T20:00Z	0.772	false
2021-01-21T19:45Z	0.773	false
2021-01-21T19:30Z	0.772	false
2021-01-21T19:15Z	0.774	false
2021-01-21T19:00Z	0.771	false
2021-01-21T18:45Z	0.775	false
2021-01-21T18:30Z	0.774	false
2021-01-21T18:15Z	0.775	false
2021-01-21T18:00Z	0.774	false
2021-01-21T17:45Z	0.776	false
2021-01-21T17:30Z	0.773	false
2021-01-21T17:15Z	0.776	false
2021-01-21T17:00Z	0.773	false
2021-01-21T16:45Z	0.774	false
2021-01-21T16:30Z	0.774	false
2021-01-21T16:15Z	0.775	false
2021-01-21T16:00Z	0.773	false
2021-01-21T15:45Z	0.775	false
2021-01-21T15:30Z	0.773	false
2021-01-21T15:15Z	0.775	false
2021-01-21T15:00Z	0.774	false
2021-01-21T14:45Z	0.775	false
2021-01-21T14:30Z	0.773	false
2021-01-21T14:15Z	0.776	false
2021-01-21T14:00Z	0.774	false
2021-01-21T13:45Z	0.776	false
2021-01-21T13:30Z	0.774	false
2021-01-21T13:15Z	0.776	false
2021-01-21T13:00Z	0.773	false
2021-01-21T12:45Z	0.777	false
2021-01-21T12:30Z	0.774	false
2021-01-21T12:15Z	0.777	false
2021-01-21T12:00Z	0.772	false
2021-01-21T11:45Z	0.774	false
2021-01-21T11:30Z	0.774	false
2021-01-21T11:15Z	0.775	false
2021-01-21T11:00Z	0.774	false
2021-01-21T10:45Z	0.775	false
2021-01-21T10:30Z	0.774	false
2021-01-21T10:15Z	0.774	false
2021-01-21T10:00Z	0.773	false
2021-01-21T09:45Z	0.775	false
2021-01-21T09:30Z	0.773	false
2021-01-21T09:15Z	0.776	false
2021-01-21T09:00Z	0.773	false
2021-01-21T08:45Z	0.775	false
2021-01-21T08:30Z	0.772	false
2021-01-21T08:15Z	0.774	false
2021-01-21T08:00Z	0.773	false
2021-01-21T07:45Z	0.774	false
2021-01-21T07:30Z	0.772	false
2021-01-21T07:15Z	0.774	false
2021-01-21T07:00Z	0.771	false
2021-01-21T06:45Z	0.773	false
2021-01-21T06:30Z	0.771	false
2021-01-21T06:15Z	0.773	false
2021-01-21T06:00Z	0.77	false
2021-01-21T05:45Z	0.771	false
2021-01-21T05:30Z	0.77	false
2021-01-21T05:15Z	0.772	false
2021-01-21T05:00Z	0.769	false
2021-01-21T04:45Z	0.772	false
2021-01-21T04:30Z	0.77	false
2021-01-21T04:15Z	0.771	false
2021-01-21T04:00Z	0.77	false
2021-01-21T03:45Z	0.771	false
2021-01-21T03:30Z	0.769	false
2021-01-21T03:15Z	0.771	false
2021-01-21T03:00Z	0.769	false
2021-01-21T02:45Z	0.771	false
2021-01-21T02:30Z	0.769	false
2021-01-21T02:15Z	0.771	false
2021-01-21T02:00Z	0.768	false
2021-01-21T01:45Z	0.771	false
2021-01-21T01:30Z	0.769	false
2021-01-21T01:15Z	0.771	false
2021-01-21T01:00Z	0.769	false
2021-01-21T00:45Z	0.771	false
2021-01-21T00:30Z	0.769	false
2021-01-21T00:15Z	0.77	false
2021-01-21T00:00Z	0.768	false
2021-01-20T23:45Z	0.77	false
2021-01-20T23:30Z	0.769	false
2021-01-20T23:15Z	0.771	false
2021-01-20T23:00Z	0.768	false
2021-01-20T22:45Z	0.769	false
2021-01-20T22:30Z	0.768	false
2021-01-20T22:15Z	0.771	false
2021-01-20T22:00Z	0.768	false
2021-01-20T21:45Z	0.77	false
2021-01-20T21:30Z	0.768	false
2021-01-20T21:15Z	0.771	false
2021-01-20T21:00Z	0.768	false
2021-01-20T20:45Z	0.77	false
2021-01-20T20:30Z	0.768	false
2021-01-20T20:15Z	0.77	false
2021-01-20T20:00Z	0.768	false
2021-01-20T19:45Z	0.771	false
2021-01-20T19:30Z	0.768	false
2021-01-20T19:15Z	0.77	false
2021-01-20T19:00Z	0.768	false
2021-01-20T18:45Z	0.77	false
2021-01-20T18:30Z	0.769	false
2021-01-20T18:15Z	0.771	false
2021-01-20T18:00Z	0.769	false
2021-01-20T17:45Z	0.771	false
2021-01-20T17:30Z	0.769	false
2021-01-20T17:15Z	0.771	false
2021-01-20T17:00Z	0.769	false
2021-01-20T16:45Z	0.77	false
2021-01-20T16:30Z	0.769	false
2021-01-20T16:15Z	0.771	false
2021-01-20T16:00Z	0.769	false
2021-01-20T15:45Z	0.772	false
2021-01-20T15:30Z	0.769	false
2021-01-20T15:15Z	0.772	false
2021-01-20T15:00Z	0.77	false
2021-01-20T14:45Z	0.773	false
2021-01-20T14:30Z	0.772	false
2021-01-20T14:15Z	0.773	false
2021-01-20T14:00Z	0.771	false
2021-01-20T13:45Z	0.774	false
2021-01-20T13:30Z	0.772	false
2021-01-20T13:15Z	0.775	false
2021-01-20T13:00Z	0.772	false
2021-01-20T12:45Z	0.774	false
2021-01-20T12:30Z	0.772	false
2021-01-20T12:15Z	0.776	false
2021-01-20T12:00Z	0.775	false
2021-01-20T11:45Z	0.777	false
2021-01-20T11:30Z	0.776	false
2021-01-20T11:15Z	0.778	false
2021-01-20T11:00Z	0.776	false
2021-01-20T10:45Z	0.779	false
2021-01-20T10:30Z	0.777	false
2021-01-20T10:15Z	0.778	false
2021-01-20T10:00Z	0.777	false
2021-01-20T09:45Z	0.78	false
2021-01-20T09:30Z	0.778	false
2021-01-20T09:15Z	0.78	false
2021-01-20T09:00Z	0.778	false
2021-01-20T08:45Z	0.781	false
2021-01-20T08:30Z	0.779	false
2021-01-20T08:15Z	0.781	false
2021-01-20T08:00Z	0.779	false
2021-01-20T07:45Z	0.782	false
2021-01-20T07:30Z	0.779	false
2021-01-20T07:15Z	0.781	false
2021-01-20T07:00Z	0.78	false
2021-01-20T06:45Z	0.781	false
2021-01-20T06:30Z	0.78	false
2021-01-20T06:15Z	0.781	false
2021-01-20T06:00Z	0.779	false
2021-01-20T05:45Z	0.782	false
2021-01-20T05:30Z	0.78	false
2021-01-20T05:15Z	0.782	false
2021-01-20T05:00Z	0.781	false
2021-01-20T04:45Z	0.783	false
2021-01-20T04:30Z	0.781	false
2021-01-20T04:15Z	0.782	false
2021-01-20T04:00Z	0.78	false
2021-01-20T03:45Z	0.782	false
2021-01-20T03:30Z	0.78	false
2021-01-20T03:15Z	0.782	false
2021-01-20T03:00Z	0.78	false
2021-01-20T02:45Z	0.782	false
2021-01-20T02:30Z	0.781	false
2021-01-20T02:15Z	0.782	false
2021-01-20T02:00Z	0.78	false
2021-01-20T01:45Z	0.783	false
2021-01-20T01:30Z	0.781	false
2021-01-20T01:15Z	0.783	false
2021-01-20T01:00Z	0.781	false
2021-01-20T00:45Z	0.783	false
2021-01-20T00:30Z	0.781	false
2021-01-20T00:15Z	0.783	false
2021-01-20T00:00Z	0.782	false
2021-01-19T23:45Z	0.784	false
2021-01-19T23:30Z	0.782	false
2021-01-19T23:15Z	0.785	false
2021-01-19T23:00Z	0.782	false
2021-01-19T22:45Z	0.784	false
2021-01-19T22:30Z	0.783	false
2021-01-19T22:15Z	0.785	false
2021-01-19T22:00Z	0.783	false
2021-01-19T21:45Z	0.785	false
2021-01-19T21:30Z	0.783	false
2021-01-19T21:15Z	0.786	false
2021-01-19T21:00Z	0.785	false
2021-01-19T20:45Z	0.786	false
2021-01-19T20:30Z	0.784	false
2021-01-19T20:15Z	0.786	false
2021-01-19T20:00Z	0.784	false
2021-01-19T19:45Z	0.787	false
2021-01-19T19:30Z	0.784	false
2021-01-19T19:15Z	0.786	false
2021-01-19T19:00Z	0.784	false
2021-01-19T18:45Z	0.786	false
2021-01-19T18:30Z	0.784	false
2021-01-19T18:15Z	0.787	false
2021-01-19T18:00Z	0.785	false
2021-01-19T17:45Z	0.787	false
2021-01-19T17:30Z	0.785	false
2021-01-19T17:15Z	0.788	false
2021-01-19T17:00Z	0.785	false
2021-01-19T16:45Z	0.788	false
2021-01-19T16:30Z	0.785	false
2021-01-19T16:15Z	0.788	false
2021-01-19T16:00Z	0.787	false
2021-01-19T15:45Z	0.789	false
2021-01-19T15:30Z	0.787	false
2021-01-19T15:15Z	0.789	false
2021-01-19T15:00Z	0.787	false
2021-01-19T14:45Z	0.789	false
2021-01-19T14:30Z	0.788	false
2021-01-19T14:15Z	0.79	false
2021-01-19T14:00Z	0.788	false
2021-01-19T13:45Z	0.789	false
2021-01-19T13:30Z	0.787	false
2021-01-19T13:15Z	0.79	false
2021-01-19T13:00Z	0.788	false
2021-01-19T12:45Z	0.79	false
2021-01-19T12:30Z	0.788	false
2021-01-19T12:15Z	0.79	false
2021-01-19T12:00Z	0.789	false
2021-01-19T11:45Z	0.792	false
2021-01-19T11:30Z	0.79	false
2021-01-19T11:15Z	0.791	false
2021-01-19T11:00Z	0.789	false
2021-01-19T10:45Z	0.791	false
2021-01-19T10:30Z	0.788	false
2021-01-19T10:15Z	0.79	false
2021-01-19T10:00Z	0.788	false
2021-01-19T09:45Z	0.789	false
2021-01-19T09:30Z	0.788	false
2021-01-19T09:15Z	0.79	false
2021-01-19T09:00Z	0.788	false
2021-01-19T08:45Z	0.79	false
2021-01-19T08:30Z	0.789	false
2021-01-19T08:15Z	0.791	false
2021-01-19T08:00Z	0.788	false
2021-01-19T07:45Z	0.791	false
2021-01-19T07:30Z	0.79	false
2021-01-19T07:15Z	0.792	false
2021-01-19T07:00Z	0.789	false
2021-01-19T06:45Z	0.791	false
2021-01-19T06:30Z	0.789	false
2021-01-19T06:15Z	0.791	false
2021-01-19T06:00Z	0.79	false
2021-01-19T05:45Z	0.79	false
2021-01-19T05:30Z	0.79	false
2021-01-19T05:15Z	0.791	false
2021-01-19T05:00Z	0.79	false
2021-01-19T04:45Z	0.791	false
2021-01-19T04:30Z	0.79	false
2021-01-19T04:15Z	0.791	false
2021-01-19T04:00Z	0.79	false
2021-01-19T03:45Z	0.791	false
2021-01-19T03:30Z	0.79	false
2021-01-19T03:15Z	0.791	false
2021-01-19T03:00Z	0.79	false
2021-01-19T02:45Z	0.792	false
2021-01-19T02:30Z	0.791	false
2021-01-19T02:15Z	0.791	false
2021-01-19T02:00Z	0.791	false
2021-01-19T01:45Z	0.792	false
2021-01-19T01:30Z	0.791	false
2021-01-19T01:15Z	0.792	false
2021-01-19T01:00Z	0.791	false
2021-01-19T00:45Z	0.792	false
2021-01-19T00:30Z	0.791	false
2021-01-19T00:15Z	0.792	false
2021-01-19T00:00Z	0.791	false
2021-01-18T23:45Z	0.792	false
2021-01-18T23:30Z	0.791	false
2021-01-18T23:15Z	0.793	false
2021-01-18T23:00Z	0.792	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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