River level Nunney Brook at Holwell

Check for flood warnings in this area

Latest recorded level 0.80m at 4:00pm Saturday 18 January 2020.

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
2020-01-18T16:00Z	0.804	false
2020-01-18T15:45Z	0.805	false
2020-01-18T15:30Z	0.805	false
2020-01-18T15:15Z	0.807	false
2020-01-18T15:00Z	0.806	false
2020-01-18T14:45Z	0.807	false
2020-01-18T14:30Z	0.808	false
2020-01-18T14:15Z	0.809	false
2020-01-18T14:00Z	0.809	false
2020-01-18T13:45Z	0.809	false
2020-01-18T13:30Z	0.809	false
2020-01-18T13:15Z	0.809	false
2020-01-18T13:00Z	0.809	false
2020-01-18T12:45Z	0.81	false
2020-01-18T12:30Z	0.811	false
2020-01-18T12:15Z	0.812	false
2020-01-18T12:00Z	0.811	false
2020-01-18T11:45Z	0.811	false
2020-01-18T11:30Z	0.812	false
2020-01-18T11:15Z	0.812	false
2020-01-18T11:00Z	0.812	false
2020-01-18T10:45Z	0.813	false
2020-01-18T10:30Z	0.814	false
2020-01-18T10:15Z	0.815	false
2020-01-18T10:00Z	0.815	false
2020-01-18T09:45Z	0.815	false
2020-01-18T09:30Z	0.817	false
2020-01-18T09:15Z	0.817	false
2020-01-18T09:00Z	0.818	false
2020-01-18T08:45Z	0.819	false
2020-01-18T08:30Z	0.82	false
2020-01-18T08:15Z	0.821	false
2020-01-18T08:00Z	0.822	false
2020-01-18T07:45Z	0.822	false
2020-01-18T07:30Z	0.824	false
2020-01-18T07:15Z	0.825	false
2020-01-18T07:00Z	0.826	false
2020-01-18T06:45Z	0.826	false
2020-01-18T06:30Z	0.827	false
2020-01-18T06:15Z	0.828	false
2020-01-18T06:00Z	0.83	false
2020-01-18T05:45Z	0.83	false
2020-01-18T05:30Z	0.832	false
2020-01-18T05:15Z	0.832	false
2020-01-18T05:00Z	0.833	false
2020-01-18T04:45Z	0.834	false
2020-01-18T04:30Z	0.836	false
2020-01-18T04:15Z	0.837	false
2020-01-18T04:00Z	0.839	false
2020-01-18T03:45Z	0.839	false
2020-01-18T03:30Z	0.841	false
2020-01-18T03:15Z	0.841	false
2020-01-18T03:00Z	0.841	false
2020-01-18T02:45Z	0.842	false
2020-01-18T02:30Z	0.843	false
2020-01-18T02:15Z	0.844	false
2020-01-18T02:00Z	0.845	false
2020-01-18T01:45Z	0.846	false
2020-01-18T01:30Z	0.846	false
2020-01-18T01:15Z	0.847	false
2020-01-18T01:00Z	0.848	false
2020-01-18T00:45Z	0.85	false
2020-01-18T00:30Z	0.85	false
2020-01-18T00:15Z	0.849	false
2020-01-18T00:00Z	0.85	false
2020-01-17T23:45Z	0.851	false
2020-01-17T23:30Z	0.853	false
2020-01-17T23:15Z	0.851	false
2020-01-17T23:00Z	0.852	false
2020-01-17T22:45Z	0.851	false
2020-01-17T22:30Z	0.85	false
2020-01-17T22:15Z	0.85	false
2020-01-17T22:00Z	0.85	false
2020-01-17T21:45Z	0.851	false
2020-01-17T21:30Z	0.849	false
2020-01-17T21:15Z	0.849	false
2020-01-17T21:00Z	0.848	false
2020-01-17T20:45Z	0.848	false
2020-01-17T20:30Z	0.845	false
2020-01-17T20:15Z	0.846	false
2020-01-17T20:00Z	0.847	false
2020-01-17T19:45Z	0.846	false
2020-01-17T19:30Z	0.848	false
2020-01-17T19:15Z	0.846	false
2020-01-17T19:00Z	0.847	false
2020-01-17T18:45Z	0.846	false
2020-01-17T18:30Z	0.846	false
2020-01-17T18:15Z	0.845	false
2020-01-17T18:00Z	0.847	false
2020-01-17T17:45Z	0.848	false
2020-01-17T17:30Z	0.847	false
2020-01-17T17:15Z	0.848	false
2020-01-17T17:00Z	0.848	false
2020-01-17T16:45Z	0.849	false
2020-01-17T16:30Z	0.85	false
2020-01-17T16:15Z	0.851	false
2020-01-17T16:00Z	0.851	false
2020-01-17T15:45Z	0.85	false
2020-01-17T15:30Z	0.851	false
2020-01-17T15:15Z	0.846	false
2020-01-17T15:00Z	0.848	false
2020-01-17T14:45Z	0.849	false
2020-01-17T14:30Z	0.851	false
2020-01-17T14:15Z	0.851	false
2020-01-17T14:00Z	0.852	false
2020-01-17T13:45Z	0.853	false
2020-01-17T13:30Z	0.855	false
2020-01-17T13:15Z	0.855	false
2020-01-17T13:00Z	0.855	false
2020-01-17T12:45Z	0.858	false
2020-01-17T12:30Z	0.86	false
2020-01-17T12:15Z	0.861	false
2020-01-17T12:00Z	0.862	false
2020-01-17T11:45Z	0.866	false
2020-01-17T11:30Z	0.866	false
2020-01-17T11:15Z	0.867	false
2020-01-17T11:00Z	0.868	false
2020-01-17T10:45Z	0.869	false
2020-01-17T10:30Z	0.869	false
2020-01-17T10:15Z	0.872	false
2020-01-17T10:00Z	0.874	false
2020-01-17T09:45Z	0.876	false
2020-01-17T09:30Z	0.878	false
2020-01-17T09:15Z	0.879	false
2020-01-17T09:00Z	0.882	false
2020-01-17T08:45Z	0.883	false
2020-01-17T08:30Z	0.885	false
2020-01-17T08:15Z	0.886	false
2020-01-17T08:00Z	0.887	false
2020-01-17T07:45Z	0.889	false
2020-01-17T07:30Z	0.89	false
2020-01-17T07:15Z	0.891	false
2020-01-17T07:00Z	0.891	false
2020-01-17T06:45Z	0.891	false
2020-01-17T06:30Z	0.891	false
2020-01-17T06:15Z	0.891	false
2020-01-17T06:00Z	0.891	false
2020-01-17T05:45Z	0.891	false
2020-01-17T05:30Z	0.89	false
2020-01-17T05:15Z	0.889	false
2020-01-17T05:00Z	0.889	false
2020-01-17T04:45Z	0.887	false
2020-01-17T04:30Z	0.885	false
2020-01-17T04:15Z	0.886	false
2020-01-17T04:00Z	0.886	false
2020-01-17T03:45Z	0.89	false
2020-01-17T03:30Z	0.89	false
2020-01-17T03:15Z	0.889	false
2020-01-17T03:00Z	0.887	false
2020-01-17T02:45Z	0.89	false
2020-01-17T02:30Z	0.89	false
2020-01-17T02:15Z	0.894	false
2020-01-17T02:00Z	0.898	false
2020-01-17T01:45Z	0.9	false
2020-01-17T01:30Z	0.904	false
2020-01-17T01:15Z	0.908	false
2020-01-17T01:00Z	0.91	false
2020-01-17T00:45Z	0.912	false
2020-01-17T00:30Z	0.915	false
2020-01-17T00:15Z	0.917	false
2020-01-17T00:00Z	0.917	false
2020-01-16T23:45Z	0.921	false
2020-01-16T23:30Z	0.923	false
2020-01-16T23:15Z	0.926	false
2020-01-16T23:00Z	0.927	false
2020-01-16T22:45Z	0.93	false
2020-01-16T22:30Z	0.932	false
2020-01-16T22:15Z	0.934	false
2020-01-16T22:00Z	0.937	false
2020-01-16T21:45Z	0.939	false
2020-01-16T21:30Z	0.942	false
2020-01-16T21:15Z	0.943	false
2020-01-16T21:00Z	0.944	false
2020-01-16T20:45Z	0.947	false
2020-01-16T20:30Z	0.949	false
2020-01-16T20:15Z	0.951	false
2020-01-16T20:00Z	0.955	false
2020-01-16T19:45Z	0.958	false
2020-01-16T19:30Z	0.962	false
2020-01-16T19:15Z	0.967	false
2020-01-16T19:00Z	0.973	false
2020-01-16T18:45Z	0.977	false
2020-01-16T18:30Z	0.979	false
2020-01-16T18:15Z	0.982	false
2020-01-16T18:00Z	0.982	false
2020-01-16T17:45Z	0.981	false
2020-01-16T17:30Z	0.979	false
2020-01-16T17:15Z	0.976	false
2020-01-16T17:00Z	0.971	false
2020-01-16T16:45Z	0.966	false
2020-01-16T16:30Z	0.962	false
2020-01-16T16:15Z	0.96	false
2020-01-16T16:00Z	0.955	false
2020-01-16T15:45Z	0.949	false
2020-01-16T15:30Z	0.94	false
2020-01-16T15:15Z	0.932	false
2020-01-16T15:00Z	0.92	false
2020-01-16T14:45Z	0.91	false
2020-01-16T14:30Z	0.903	false
2020-01-16T14:15Z	0.894	false
2020-01-16T14:00Z	0.887	false
2020-01-16T13:45Z	0.88	false
2020-01-16T13:30Z	0.876	false
2020-01-16T13:15Z	0.871	false
2020-01-16T13:00Z	0.868	false
2020-01-16T12:45Z	0.865	false
2020-01-16T12:30Z	0.862	false
2020-01-16T12:15Z	0.861	false
2020-01-16T12:00Z	0.861	false
2020-01-16T11:45Z	0.861	false
2020-01-16T11:30Z	0.858	false
2020-01-16T11:15Z	0.856	false
2020-01-16T11:00Z	0.854	false
2020-01-16T10:45Z	0.859	false
2020-01-16T10:30Z	0.857	false
2020-01-16T10:15Z	0.854	false
2020-01-16T10:00Z	0.846	false
2020-01-16T09:45Z	0.861	false
2020-01-16T09:30Z	0.864	false
2020-01-16T09:15Z	0.863	false
2020-01-16T09:00Z	0.865	false
2020-01-16T08:45Z	0.866	false
2020-01-16T08:30Z	0.866	false
2020-01-16T08:15Z	0.864	false
2020-01-16T08:00Z	0.868	false
2020-01-16T07:45Z	0.869	false
2020-01-16T07:30Z	0.869	false
2020-01-16T07:15Z	0.869	false
2020-01-16T07:00Z	0.87	false
2020-01-16T06:45Z	0.872	false
2020-01-16T06:30Z	0.873	false
2020-01-16T06:15Z	0.874	false
2020-01-16T06:00Z	0.874	false
2020-01-16T05:45Z	0.874	false
2020-01-16T05:30Z	0.875	false
2020-01-16T05:15Z	0.876	false
2020-01-16T05:00Z	0.878	false
2020-01-16T04:45Z	0.878	false
2020-01-16T04:30Z	0.879	false
2020-01-16T04:15Z	0.88	false
2020-01-16T04:00Z	0.882	false
2020-01-16T03:45Z	0.884	false
2020-01-16T03:30Z	0.885	false
2020-01-16T03:15Z	0.887	false
2020-01-16T03:00Z	0.886	false
2020-01-16T02:45Z	0.887	false
2020-01-16T02:30Z	0.889	false
2020-01-16T02:15Z	0.889	false
2020-01-16T02:00Z	0.891	false
2020-01-16T01:45Z	0.892	false
2020-01-16T01:30Z	0.894	false
2020-01-16T01:15Z	0.896	false
2020-01-16T01:00Z	0.896	false
2020-01-16T00:45Z	0.899	false
2020-01-16T00:30Z	0.901	false
2020-01-16T00:15Z	0.903	false
2020-01-16T00:00Z	0.904	false
2020-01-15T23:45Z	0.906	false
2020-01-15T23:30Z	0.909	false
2020-01-15T23:15Z	0.91	false
2020-01-15T23:00Z	0.912	false
2020-01-15T22:45Z	0.915	false
2020-01-15T22:30Z	0.917	false
2020-01-15T22:15Z	0.92	false
2020-01-15T22:00Z	0.922	false
2020-01-15T21:45Z	0.926	false
2020-01-15T21:30Z	0.928	false
2020-01-15T21:15Z	0.931	false
2020-01-15T21:00Z	0.933	false
2020-01-15T20:45Z	0.934	false
2020-01-15T20:30Z	0.937	false
2020-01-15T20:15Z	0.939	false
2020-01-15T20:00Z	0.942	false
2020-01-15T19:45Z	0.944	false
2020-01-15T19:30Z	0.948	false
2020-01-15T19:15Z	0.949	false
2020-01-15T19:00Z	0.953	false
2020-01-15T18:45Z	0.956	false
2020-01-15T18:30Z	0.96	false
2020-01-15T18:15Z	0.963	false
2020-01-15T18:00Z	0.966	false
2020-01-15T17:45Z	0.969	false
2020-01-15T17:30Z	0.973	false
2020-01-15T17:15Z	0.976	false
2020-01-15T17:00Z	0.98	false
2020-01-15T16:45Z	0.983	false
2020-01-15T16:30Z	0.988	false
2020-01-15T16:15Z	0.992	false
2020-01-15T16:00Z	0.995	false
2020-01-15T15:45Z	1	false
2020-01-15T15:30Z	1.005	false
2020-01-15T15:15Z	1.01	false
2020-01-15T15:00Z	1.015	false
2020-01-15T14:45Z	1.02	false
2020-01-15T14:30Z	1.025	false
2020-01-15T14:15Z	1.03	false
2020-01-15T14:00Z	1.034	false
2020-01-15T13:45Z	1.041	false
2020-01-15T13:30Z	1.046	false
2020-01-15T13:15Z	1.053	false
2020-01-15T13:00Z	1.059	false
2020-01-15T12:45Z	1.067	false
2020-01-15T12:30Z	1.078	false
2020-01-15T12:15Z	1.085	false
2020-01-15T12:00Z	1.088	false
2020-01-15T11:45Z	1.097	false
2020-01-15T11:30Z	1.105	false
2020-01-15T11:15Z	1.115	false
2020-01-15T11:00Z	1.126	false
2020-01-15T10:45Z	1.137	false
2020-01-15T10:30Z	1.148	false
2020-01-15T10:15Z	1.161	false
2020-01-15T10:00Z	1.175	false
2020-01-15T09:45Z	1.19	false
2020-01-15T09:30Z	1.207	false
2020-01-15T09:15Z	1.225	false
2020-01-15T09:00Z	1.247	false
2020-01-15T08:45Z	1.271	false
2020-01-15T08:30Z	1.297	false
2020-01-15T08:15Z	1.326	false
2020-01-15T08:00Z	1.354	false
2020-01-15T07:45Z	1.384	false
2020-01-15T07:30Z	1.419	false
2020-01-15T07:15Z	1.451	false
2020-01-15T07:00Z	1.489	false
2020-01-15T06:45Z	1.529	false
2020-01-15T06:30Z	1.572	false
2020-01-15T06:15Z	1.616	false
2020-01-15T06:00Z	1.657	false
2020-01-15T05:45Z	1.7	false
2020-01-15T05:30Z	1.736	false
2020-01-15T05:15Z	1.771	false
2020-01-15T05:00Z	1.8	false
2020-01-15T04:45Z	1.814	false
2020-01-15T04:30Z	1.823	false
2020-01-15T04:15Z	1.83	false
2020-01-15T04:00Z	1.828	false
2020-01-15T03:45Z	1.821	false
2020-01-15T03:30Z	1.812	false
2020-01-15T03:15Z	1.801	false
2020-01-15T03:00Z	1.786	false
2020-01-15T02:45Z	1.773	false
2020-01-15T02:30Z	1.758	false
2020-01-15T02:15Z	1.744	false
2020-01-15T02:00Z	1.733	false
2020-01-15T01:45Z	1.721	false
2020-01-15T01:30Z	1.702	false
2020-01-15T01:15Z	1.68	false
2020-01-15T01:00Z	1.653	false
2020-01-15T00:45Z	1.615	false
2020-01-15T00:30Z	1.566	false
2020-01-15T00:15Z	1.51	false
2020-01-15T00:00Z	1.455	false
2020-01-14T23:45Z	1.398	false
2020-01-14T23:30Z	1.347	false
2020-01-14T23:15Z	1.307	false
2020-01-14T23:00Z	1.284	false
2020-01-14T22:45Z	1.268	false
2020-01-14T22:30Z	1.258	false
2020-01-14T22:15Z	1.25	false
2020-01-14T22:00Z	1.235	false
2020-01-14T21:45Z	1.219	false
2020-01-14T21:30Z	1.202	false
2020-01-14T21:15Z	1.189	false
2020-01-14T21:00Z	1.182	false
2020-01-14T20:45Z	1.179	false
2020-01-14T20:30Z	1.17	false
2020-01-14T20:15Z	1.151	false
2020-01-14T20:00Z	1.109	false
2020-01-14T19:45Z	1.045	false
2020-01-14T19:30Z	1.003	false
2020-01-14T19:15Z	0.972	false
2020-01-14T19:00Z	0.938	false
2020-01-14T18:45Z	0.921	false
2020-01-14T18:30Z	0.904	false
2020-01-14T18:15Z	0.889	false
2020-01-14T18:00Z	0.889	false
2020-01-14T17:45Z	0.886	false
2020-01-14T17:30Z	0.889	false
2020-01-14T17:15Z	0.888	false
2020-01-14T17:00Z	0.887	false
2020-01-14T16:45Z	0.887	false
2020-01-14T16:30Z	0.885	false
2020-01-14T16:15Z	0.886	false
2020-01-14T16:00Z	0.885	false
2020-01-14T15:45Z	0.884	false
2020-01-14T15:30Z	0.882	false
2020-01-14T15:15Z	0.881	false
2020-01-14T15:00Z	0.88	false
2020-01-14T14:45Z	0.88	false
2020-01-14T14:30Z	0.875	false
2020-01-14T14:15Z	0.878	false
2020-01-14T14:00Z	0.876	false
2020-01-14T13:45Z	0.876	false
2020-01-14T13:30Z	0.875	false
2020-01-14T13:15Z	0.873	false
2020-01-14T13:00Z	0.873	false
2020-01-14T12:45Z	0.872	false
2020-01-14T12:30Z	0.874	false
2020-01-14T12:15Z	0.877	false
2020-01-14T12:00Z	0.879	false
2020-01-14T11:45Z	0.876	false
2020-01-14T11:30Z	0.876	false
2020-01-14T11:15Z	0.875	false
2020-01-14T11:00Z	0.876	false
2020-01-14T10:45Z	0.877	false
2020-01-14T10:30Z	0.878	false
2020-01-14T10:15Z	0.881	false
2020-01-14T10:00Z	0.881	false
2020-01-14T09:45Z	0.881	false
2020-01-14T09:30Z	0.885	false
2020-01-14T09:15Z	0.885	false
2020-01-14T09:00Z	0.885	false
2020-01-14T08:45Z	0.887	false
2020-01-14T08:30Z	0.889	false
2020-01-14T08:15Z	0.891	false
2020-01-14T08:00Z	0.892	false
2020-01-14T07:45Z	0.896	false
2020-01-14T07:30Z	0.898	false
2020-01-14T07:15Z	0.9	false
2020-01-14T07:00Z	0.903	false
2020-01-14T06:45Z	0.905	false
2020-01-14T06:30Z	0.908	false
2020-01-14T06:15Z	0.909	false
2020-01-14T06:00Z	0.912	false
2020-01-14T05:45Z	0.917	false
2020-01-14T05:30Z	0.917	false
2020-01-14T05:15Z	0.925	false
2020-01-14T05:00Z	0.928	false
2020-01-14T04:45Z	0.933	false
2020-01-14T04:30Z	0.937	false
2020-01-14T04:15Z	0.943	false
2020-01-14T04:00Z	0.949	false
2020-01-14T03:45Z	0.951	false
2020-01-14T03:30Z	0.959	false
2020-01-14T03:15Z	0.966	false
2020-01-14T03:00Z	0.972	false
2020-01-14T02:45Z	0.978	false
2020-01-14T02:30Z	0.986	false
2020-01-14T02:15Z	0.995	false
2020-01-14T02:00Z	1.003	false
2020-01-14T01:45Z	1.014	false
2020-01-14T01:30Z	1.026	false
2020-01-14T01:15Z	1.039	false
2020-01-14T01:00Z	1.053	false
2020-01-14T00:45Z	1.068	false
2020-01-14T00:30Z	1.087	false
2020-01-14T00:15Z	1.11	false
2020-01-14T00:00Z	1.134	false
2020-01-13T23:45Z	1.158	false
2020-01-13T23:30Z	1.183	false
2020-01-13T23:15Z	1.203	false
2020-01-13T23:00Z	1.221	false
2020-01-13T22:45Z	1.232	false
2020-01-13T22:30Z	1.236	false
2020-01-13T22:15Z	1.233	false
2020-01-13T22:00Z	1.223	false
2020-01-13T21:45Z	1.204	false
2020-01-13T21:30Z	1.181	false
2020-01-13T21:15Z	1.163	false
2020-01-13T21:00Z	1.15	false
2020-01-13T20:45Z	1.15	false
2020-01-13T20:30Z	1.151	false
2020-01-13T20:15Z	1.14	false
2020-01-13T20:00Z	1.103	false
2020-01-13T19:45Z	1.026	false
2020-01-13T19:30Z	0.966	false
2020-01-13T19:15Z	0.926	false
2020-01-13T19:00Z	0.882	false
2020-01-13T18:45Z	0.862	false
2020-01-13T18:30Z	0.82	false
2020-01-13T18:15Z	0.815	false
2020-01-13T18:00Z	0.813	false
2020-01-13T17:45Z	0.809	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
• View your property's long term risk of flooding

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