River level Nunney Brook at Holwell

Check for flood warnings in this area

Latest recorded level 0.80m at 4:00pm Wednesday 3 March 2021.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 2.00m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2021-03-03T16:00Z	0.796	false
2021-03-03T15:45Z	0.793	false
2021-03-03T15:30Z	0.792	false
2021-03-03T15:15Z	0.792	false
2021-03-03T15:00Z	0.791	false
2021-03-03T14:45Z	0.791	false
2021-03-03T14:30Z	0.791	false
2021-03-03T14:15Z	0.791	false
2021-03-03T14:00Z	0.792	false
2021-03-03T13:45Z	0.791	false
2021-03-03T13:30Z	0.792	false
2021-03-03T13:15Z	0.79	false
2021-03-03T13:00Z	0.791	false
2021-03-03T12:45Z	0.792	false
2021-03-03T12:30Z	0.792	false
2021-03-03T12:15Z	0.791	false
2021-03-03T12:00Z	0.791	false
2021-03-03T11:45Z	0.791	false
2021-03-03T11:30Z	0.791	false
2021-03-03T11:15Z	0.791	false
2021-03-03T11:00Z	0.791	false
2021-03-03T10:45Z	0.79	false
2021-03-03T10:30Z	0.79	false
2021-03-03T10:15Z	0.79	false
2021-03-03T10:00Z	0.79	false
2021-03-03T09:45Z	0.791	false
2021-03-03T09:30Z	0.79	false
2021-03-03T09:15Z	0.789	false
2021-03-03T09:00Z	0.79	false
2021-03-03T08:45Z	0.79	false
2021-03-03T08:30Z	0.789	false
2021-03-03T08:15Z	0.79	false
2021-03-03T08:00Z	0.79	false
2021-03-03T07:45Z	0.791	false
2021-03-03T07:30Z	0.791	false
2021-03-03T07:15Z	0.791	false
2021-03-03T07:00Z	0.791	false
2021-03-03T06:45Z	0.79	false
2021-03-03T06:30Z	0.791	false
2021-03-03T06:15Z	0.791	false
2021-03-03T06:00Z	0.79	false
2021-03-03T05:45Z	0.79	false
2021-03-03T05:30Z	0.79	false
2021-03-03T05:15Z	0.79	false
2021-03-03T05:00Z	0.791	false
2021-03-03T04:45Z	0.79	false
2021-03-03T04:30Z	0.791	false
2021-03-03T04:15Z	0.791	false
2021-03-03T04:00Z	0.791	false
2021-03-03T03:45Z	0.791	false
2021-03-03T03:30Z	0.791	false
2021-03-03T03:15Z	0.79	false
2021-03-03T03:00Z	0.791	false
2021-03-03T02:45Z	0.791	false
2021-03-03T02:30Z	0.791	false
2021-03-03T02:15Z	0.791	false
2021-03-03T02:00Z	0.792	false
2021-03-03T01:45Z	0.791	false
2021-03-03T01:30Z	0.791	false
2021-03-03T01:15Z	0.792	false
2021-03-03T01:00Z	0.792	false
2021-03-03T00:45Z	0.792	false
2021-03-03T00:30Z	0.792	false
2021-03-03T00:15Z	0.792	false
2021-03-03T00:00Z	0.792	false
2021-03-02T23:45Z	0.793	false
2021-03-02T23:30Z	0.792	false
2021-03-02T23:15Z	0.792	false
2021-03-02T23:00Z	0.792	false
2021-03-02T22:45Z	0.792	false
2021-03-02T22:30Z	0.793	false
2021-03-02T22:15Z	0.793	false
2021-03-02T22:00Z	0.792	false
2021-03-02T21:45Z	0.793	false
2021-03-02T21:30Z	0.793	false
2021-03-02T21:15Z	0.793	false
2021-03-02T21:00Z	0.794	false
2021-03-02T20:45Z	0.791	false
2021-03-02T20:30Z	0.793	false
2021-03-02T20:15Z	0.793	false
2021-03-02T20:00Z	0.793	false
2021-03-02T19:45Z	0.793	false
2021-03-02T19:30Z	0.792	false
2021-03-02T19:15Z	0.793	false
2021-03-02T19:00Z	0.793	false
2021-03-02T18:45Z	0.793	false
2021-03-02T18:30Z	0.793	false
2021-03-02T18:15Z	0.793	false
2021-03-02T18:00Z	0.793	false
2021-03-02T17:45Z	0.794	false
2021-03-02T17:30Z	0.793	false
2021-03-02T17:15Z	0.794	false
2021-03-02T17:00Z	0.794	false
2021-03-02T16:45Z	0.794	false
2021-03-02T16:30Z	0.794	false
2021-03-02T16:15Z	0.795	false
2021-03-02T16:00Z	0.795	false
2021-03-02T15:45Z	0.794	false
2021-03-02T15:30Z	0.794	false
2021-03-02T15:15Z	0.794	false
2021-03-02T15:00Z	0.794	false
2021-03-02T14:45Z	0.795	false
2021-03-02T14:30Z	0.795	false
2021-03-02T14:15Z	0.794	false
2021-03-02T14:00Z	0.794	false
2021-03-02T13:45Z	0.795	false
2021-03-02T13:30Z	0.795	false
2021-03-02T13:15Z	0.795	false
2021-03-02T13:00Z	0.793	false
2021-03-02T12:45Z	0.794	false
2021-03-02T12:30Z	0.794	false
2021-03-02T12:15Z	0.793	false
2021-03-02T12:00Z	0.794	false
2021-03-02T11:45Z	0.793	false
2021-03-02T11:30Z	0.793	false
2021-03-02T11:15Z	0.793	false
2021-03-02T11:00Z	0.793	false
2021-03-02T10:45Z	0.793	false
2021-03-02T10:30Z	0.793	false
2021-03-02T10:15Z	0.794	false
2021-03-02T10:00Z	0.793	false
2021-03-02T09:45Z	0.794	false
2021-03-02T09:30Z	0.794	false
2021-03-02T09:15Z	0.794	false
2021-03-02T09:00Z	0.794	false
2021-03-02T08:45Z	0.793	false
2021-03-02T08:30Z	0.794	false
2021-03-02T08:15Z	0.794	false
2021-03-02T08:00Z	0.794	false
2021-03-02T07:45Z	0.795	false
2021-03-02T07:30Z	0.795	false
2021-03-02T07:15Z	0.795	false
2021-03-02T07:00Z	0.794	false
2021-03-02T06:45Z	0.795	false
2021-03-02T06:30Z	0.794	false
2021-03-02T06:15Z	0.796	false
2021-03-02T06:00Z	0.795	false
2021-03-02T05:45Z	0.797	false
2021-03-02T05:30Z	0.795	false
2021-03-02T05:15Z	0.797	false
2021-03-02T05:00Z	0.796	false
2021-03-02T04:45Z	0.797	false
2021-03-02T04:30Z	0.797	false
2021-03-02T04:15Z	0.796	false
2021-03-02T04:00Z	0.797	false
2021-03-02T03:45Z	0.796	false
2021-03-02T03:30Z	0.796	false
2021-03-02T03:15Z	0.797	false
2021-03-02T03:00Z	0.798	false
2021-03-02T02:45Z	0.797	false
2021-03-02T02:30Z	0.796	false
2021-03-02T02:15Z	0.797	false
2021-03-02T02:00Z	0.798	false
2021-03-02T01:45Z	0.797	false
2021-03-02T01:30Z	0.798	false
2021-03-02T01:15Z	0.797	false
2021-03-02T01:00Z	0.798	false
2021-03-02T00:45Z	0.798	false
2021-03-02T00:30Z	0.798	false
2021-03-02T00:15Z	0.799	false
2021-03-02T00:00Z	0.799	false
2021-03-01T23:45Z	0.8	false
2021-03-01T23:30Z	0.798	false
2021-03-01T23:15Z	0.8	false
2021-03-01T23:00Z	0.8	false
2021-03-01T22:45Z	0.8	false
2021-03-01T22:30Z	0.8	false
2021-03-01T22:15Z	0.8	false
2021-03-01T22:00Z	0.8	false
2021-03-01T21:45Z	0.8	false
2021-03-01T21:30Z	0.8	false
2021-03-01T21:15Z	0.8	false
2021-03-01T21:00Z	0.801	false
2021-03-01T20:45Z	0.8	false
2021-03-01T20:30Z	0.8	false
2021-03-01T20:15Z	0.8	false
2021-03-01T20:00Z	0.8	false
2021-03-01T19:45Z	0.8	false
2021-03-01T19:30Z	0.801	false
2021-03-01T19:15Z	0.8	false
2021-03-01T19:00Z	0.801	false
2021-03-01T18:45Z	0.802	false
2021-03-01T18:30Z	0.803	false
2021-03-01T18:15Z	0.802	false
2021-03-01T18:00Z	0.801	false
2021-03-01T17:45Z	0.802	false
2021-03-01T17:30Z	0.802	false
2021-03-01T17:15Z	0.802	false
2021-03-01T17:00Z	0.803	false
2021-03-01T16:45Z	0.801	false
2021-03-01T16:30Z	0.802	false
2021-03-01T16:15Z	0.803	false
2021-03-01T16:00Z	0.803	false
2021-03-01T15:45Z	0.802	false
2021-03-01T15:30Z	0.803	false
2021-03-01T15:15Z	0.804	false
2021-03-01T15:00Z	0.803	false
2021-03-01T14:45Z	0.803	false
2021-03-01T14:30Z	0.803	false
2021-03-01T14:15Z	0.803	false
2021-03-01T14:00Z	0.802	false
2021-03-01T13:45Z	0.804	false
2021-03-01T13:30Z	0.803	false
2021-03-01T13:15Z	0.802	false
2021-03-01T13:00Z	0.803	false
2021-03-01T12:45Z	0.802	false
2021-03-01T12:30Z	0.802	false
2021-03-01T12:15Z	0.802	false
2021-03-01T12:00Z	0.802	false
2021-03-01T11:45Z	0.803	false
2021-03-01T11:30Z	0.803	false
2021-03-01T11:15Z	0.802	false
2021-03-01T11:00Z	0.802	false
2021-03-01T10:45Z	0.802	false
2021-03-01T10:30Z	0.802	false
2021-03-01T10:15Z	0.803	false
2021-03-01T10:00Z	0.802	false
2021-03-01T09:45Z	0.801	false
2021-03-01T09:30Z	0.802	false
2021-03-01T09:15Z	0.803	false
2021-03-01T09:00Z	0.803	false
2021-03-01T08:45Z	0.803	false
2021-03-01T08:30Z	0.804	false
2021-03-01T08:15Z	0.804	false
2021-03-01T08:00Z	0.804	false
2021-03-01T07:45Z	0.804	false
2021-03-01T07:30Z	0.804	false
2021-03-01T07:15Z	0.804	false
2021-03-01T07:00Z	0.803	false
2021-03-01T06:45Z	0.803	false
2021-03-01T06:30Z	0.803	false
2021-03-01T06:15Z	0.803	false
2021-03-01T06:00Z	0.804	false
2021-03-01T05:45Z	0.804	false
2021-03-01T05:30Z	0.804	false
2021-03-01T05:15Z	0.803	false
2021-03-01T05:00Z	0.804	false
2021-03-01T04:45Z	0.804	false
2021-03-01T04:30Z	0.804	false
2021-03-01T04:15Z	0.806	false
2021-03-01T04:00Z	0.806	false
2021-03-01T03:45Z	0.805	false
2021-03-01T03:30Z	0.805	false
2021-03-01T03:15Z	0.806	false
2021-03-01T03:00Z	0.805	false
2021-03-01T02:45Z	0.804	false
2021-03-01T02:30Z	0.805	false
2021-03-01T02:15Z	0.805	false
2021-03-01T02:00Z	0.805	false
2021-03-01T01:45Z	0.805	false
2021-03-01T01:30Z	0.806	false
2021-03-01T01:15Z	0.806	false
2021-03-01T01:00Z	0.806	false
2021-03-01T00:45Z	0.807	false
2021-03-01T00:30Z	0.806	false
2021-03-01T00:15Z	0.806	false
2021-03-01T00:00Z	0.807	false
2021-02-28T23:45Z	0.807	false
2021-02-28T23:30Z	0.806	false
2021-02-28T23:15Z	0.806	false
2021-02-28T23:00Z	0.806	false
2021-02-28T22:45Z	0.806	false
2021-02-28T22:30Z	0.807	false
2021-02-28T22:15Z	0.806	false
2021-02-28T22:00Z	0.807	false
2021-02-28T21:45Z	0.806	false
2021-02-28T21:30Z	0.807	false
2021-02-28T21:15Z	0.807	false
2021-02-28T21:00Z	0.807	false
2021-02-28T20:45Z	0.807	false
2021-02-28T20:30Z	0.807	false
2021-02-28T20:15Z	0.807	false
2021-02-28T20:00Z	0.807	false
2021-02-28T19:45Z	0.807	false
2021-02-28T19:30Z	0.808	false
2021-02-28T19:15Z	0.807	false
2021-02-28T19:00Z	0.807	false
2021-02-28T18:45Z	0.808	false
2021-02-28T18:30Z	0.808	false
2021-02-28T18:15Z	0.809	false
2021-02-28T18:00Z	0.809	false
2021-02-28T17:45Z	0.809	false
2021-02-28T17:30Z	0.809	false
2021-02-28T17:15Z	0.809	false
2021-02-28T17:00Z	0.81	false
2021-02-28T16:45Z	0.809	false
2021-02-28T16:30Z	0.81	false
2021-02-28T16:15Z	0.81	false
2021-02-28T16:00Z	0.809	false
2021-02-28T15:45Z	0.809	false
2021-02-28T15:30Z	0.809	false
2021-02-28T15:15Z	0.809	false
2021-02-28T15:00Z	0.808	false
2021-02-28T14:45Z	0.809	false
2021-02-28T14:30Z	0.809	false
2021-02-28T14:15Z	0.809	false
2021-02-28T14:00Z	0.808	false
2021-02-28T13:45Z	0.809	false
2021-02-28T13:30Z	0.81	false
2021-02-28T13:15Z	0.81	false
2021-02-28T13:00Z	0.81	false
2021-02-28T12:45Z	0.808	false
2021-02-28T12:30Z	0.809	false
2021-02-28T12:15Z	0.809	false
2021-02-28T12:00Z	0.808	false
2021-02-28T11:45Z	0.809	false
2021-02-28T11:30Z	0.808	false
2021-02-28T11:15Z	0.809	false
2021-02-28T11:00Z	0.808	false
2021-02-28T10:45Z	0.807	false
2021-02-28T10:30Z	0.808	false
2021-02-28T10:15Z	0.808	false
2021-02-28T10:00Z	0.807	false
2021-02-28T09:45Z	0.809	false
2021-02-28T09:30Z	0.808	false
2021-02-28T09:15Z	0.808	false
2021-02-28T09:00Z	0.809	false
2021-02-28T08:45Z	0.808	false
2021-02-28T08:30Z	0.808	false
2021-02-28T08:15Z	0.809	false
2021-02-28T08:00Z	0.808	false
2021-02-28T07:45Z	0.808	false
2021-02-28T07:30Z	0.809	false
2021-02-28T07:15Z	0.808	false
2021-02-28T07:00Z	0.808	false
2021-02-28T06:45Z	0.809	false
2021-02-28T06:30Z	0.809	false
2021-02-28T06:15Z	0.808	false
2021-02-28T06:00Z	0.809	false
2021-02-28T05:45Z	0.809	false
2021-02-28T05:30Z	0.809	false
2021-02-28T05:15Z	0.808	false
2021-02-28T05:00Z	0.809	false
2021-02-28T04:45Z	0.809	false
2021-02-28T04:30Z	0.809	false
2021-02-28T04:15Z	0.809	false
2021-02-28T04:00Z	0.809	false
2021-02-28T03:45Z	0.81	false
2021-02-28T03:30Z	0.809	false
2021-02-28T03:15Z	0.811	false
2021-02-28T03:00Z	0.809	false
2021-02-28T02:45Z	0.811	false
2021-02-28T02:30Z	0.809	false
2021-02-28T02:15Z	0.81	false
2021-02-28T02:00Z	0.811	false
2021-02-28T01:45Z	0.81	false
2021-02-28T01:30Z	0.811	false
2021-02-28T01:15Z	0.811	false
2021-02-28T01:00Z	0.809	false
2021-02-28T00:45Z	0.811	false
2021-02-28T00:30Z	0.811	false
2021-02-28T00:15Z	0.811	false
2021-02-28T00:00Z	0.811	false
2021-02-27T23:45Z	0.811	false
2021-02-27T23:30Z	0.811	false
2021-02-27T23:15Z	0.811	false
2021-02-27T23:00Z	0.812	false
2021-02-27T22:45Z	0.812	false
2021-02-27T22:30Z	0.812	false
2021-02-27T22:15Z	0.812	false
2021-02-27T22:00Z	0.813	false
2021-02-27T21:45Z	0.813	false
2021-02-27T21:30Z	0.813	false
2021-02-27T21:15Z	0.812	false
2021-02-27T21:00Z	0.813	false
2021-02-27T20:45Z	0.814	false
2021-02-27T20:30Z	0.814	false
2021-02-27T20:15Z	0.814	false
2021-02-27T20:00Z	0.814	false
2021-02-27T19:45Z	0.814	false
2021-02-27T19:30Z	0.813	false
2021-02-27T19:15Z	0.814	false
2021-02-27T19:00Z	0.814	false
2021-02-27T18:45Z	0.814	false
2021-02-27T18:30Z	0.813	false
2021-02-27T18:15Z	0.814	false
2021-02-27T18:00Z	0.814	false
2021-02-27T17:45Z	0.814	false
2021-02-27T17:30Z	0.814	false
2021-02-27T17:15Z	0.813	false
2021-02-27T17:00Z	0.814	false
2021-02-27T16:45Z	0.814	false
2021-02-27T16:30Z	0.814	false
2021-02-27T16:15Z	0.814	false
2021-02-27T16:00Z	0.815	false
2021-02-27T15:45Z	0.813	false
2021-02-27T15:30Z	0.813	false
2021-02-27T15:15Z	0.813	false
2021-02-27T15:00Z	0.813	false
2021-02-27T14:45Z	0.813	false
2021-02-27T14:30Z	0.814	false
2021-02-27T14:15Z	0.814	false
2021-02-27T14:00Z	0.813	false
2021-02-27T13:45Z	0.813	false
2021-02-27T13:30Z	0.814	false
2021-02-27T13:15Z	0.814	false
2021-02-27T13:00Z	0.813	false
2021-02-27T12:45Z	0.813	false
2021-02-27T12:30Z	0.813	false
2021-02-27T12:15Z	0.813	false
2021-02-27T12:00Z	0.814	false
2021-02-27T11:45Z	0.813	false
2021-02-27T11:30Z	0.813	false
2021-02-27T11:15Z	0.813	false
2021-02-27T11:00Z	0.813	false
2021-02-27T10:45Z	0.814	false
2021-02-27T10:30Z	0.813	false
2021-02-27T10:15Z	0.814	false
2021-02-27T10:00Z	0.813	false
2021-02-27T09:45Z	0.814	false
2021-02-27T09:30Z	0.813	false
2021-02-27T09:15Z	0.813	false
2021-02-27T09:00Z	0.813	false
2021-02-27T08:45Z	0.813	false
2021-02-27T08:30Z	0.814	false
2021-02-27T08:15Z	0.814	false
2021-02-27T08:00Z	0.813	false
2021-02-27T07:45Z	0.814	false
2021-02-27T07:30Z	0.813	false
2021-02-27T07:15Z	0.814	false
2021-02-27T07:00Z	0.814	false
2021-02-27T06:45Z	0.815	false
2021-02-27T06:30Z	0.814	false
2021-02-27T06:15Z	0.814	false
2021-02-27T06:00Z	0.814	false
2021-02-27T05:45Z	0.815	false
2021-02-27T05:30Z	0.814	false
2021-02-27T05:15Z	0.815	false
2021-02-27T05:00Z	0.815	false
2021-02-27T04:45Z	0.815	false
2021-02-27T04:30Z	0.814	false
2021-02-27T04:15Z	0.815	false
2021-02-27T04:00Z	0.815	false
2021-02-27T03:45Z	0.816	false
2021-02-27T03:30Z	0.817	false
2021-02-27T03:15Z	0.816	false
2021-02-27T03:00Z	0.816	false
2021-02-27T02:45Z	0.816	false
2021-02-27T02:30Z	0.816	false
2021-02-27T02:15Z	0.817	false
2021-02-27T02:00Z	0.816	false
2021-02-27T01:45Z	0.816	false
2021-02-27T01:30Z	0.817	false
2021-02-27T01:15Z	0.817	false
2021-02-27T01:00Z	0.817	false
2021-02-27T00:45Z	0.817	false
2021-02-27T00:30Z	0.818	false
2021-02-27T00:15Z	0.818	false
2021-02-27T00:00Z	0.819	false
2021-02-26T23:45Z	0.819	false
2021-02-26T23:30Z	0.82	false
2021-02-26T23:15Z	0.819	false
2021-02-26T23:00Z	0.819	false
2021-02-26T22:45Z	0.82	false
2021-02-26T22:30Z	0.819	false
2021-02-26T22:15Z	0.82	false
2021-02-26T22:00Z	0.82	false
2021-02-26T21:45Z	0.82	false
2021-02-26T21:30Z	0.82	false
2021-02-26T21:15Z	0.822	false
2021-02-26T21:00Z	0.822	false
2021-02-26T20:45Z	0.821	false
2021-02-26T20:30Z	0.821	false
2021-02-26T20:15Z	0.822	false
2021-02-26T20:00Z	0.823	false
2021-02-26T19:45Z	0.823	false
2021-02-26T19:30Z	0.822	false
2021-02-26T19:15Z	0.822	false
2021-02-26T19:00Z	0.822	false
2021-02-26T18:45Z	0.822	false
2021-02-26T18:30Z	0.822	false
2021-02-26T18:15Z	0.823	false
2021-02-26T18:00Z	0.823	false
2021-02-26T17:45Z	0.823	false
2021-02-26T17:30Z	0.823	false
2021-02-26T17:15Z	0.823	false
2021-02-26T17:00Z	0.823	false
2021-02-26T16:45Z	0.823	false
2021-02-26T16:30Z	0.823	false
2021-02-26T16:15Z	0.824	false

Forecast data

Key information

• Station name: Holwell
• Station ID: 3005
• River name: Nunney Brook
• Typical range: 0.64m to 2.00m
• Highest level on record: 2.66m on 11 January 2008
• Site datum: 113.22mAOD (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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