River level River Itchen at City Mill

Flooding is possible - Be prepared

The latest information indicates flooding is possible - Take action.

Check for flood warnings in this area

Latest recorded level 0.80m at 5:30am Saturday 4 April 2020.

River levels at this location in the last 5 days

Now
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• Measured level
• When the water level reaches 0.78m 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
2020-04-04T04:30Z	0.802	false
2020-04-04T04:15Z	0.803	false
2020-04-04T04:00Z	0.802	false
2020-04-04T03:45Z	0.802	false
2020-04-04T03:30Z	0.803	false
2020-04-04T03:15Z	0.803	false
2020-04-04T03:00Z	0.804	false
2020-04-04T02:45Z	0.803	false
2020-04-04T02:30Z	0.804	false
2020-04-04T02:15Z	0.803	false
2020-04-04T02:00Z	0.804	false
2020-04-04T01:45Z	0.804	false
2020-04-04T01:30Z	0.804	false
2020-04-04T01:15Z	0.805	false
2020-04-04T01:00Z	0.804	false
2020-04-04T00:45Z	0.805	false
2020-04-04T00:30Z	0.805	false
2020-04-04T00:15Z	0.805	false
2020-04-04T00:00Z	0.804	false
2020-04-03T23:45Z	0.805	false
2020-04-03T23:30Z	0.806	false
2020-04-03T23:15Z	0.806	false
2020-04-03T23:00Z	0.806	false
2020-04-03T22:45Z	0.807	false
2020-04-03T22:30Z	0.807	false
2020-04-03T22:15Z	0.807	false
2020-04-03T22:00Z	0.807	false
2020-04-03T21:45Z	0.807	false
2020-04-03T21:30Z	0.807	false
2020-04-03T21:15Z	0.807	false
2020-04-03T21:00Z	0.808	false
2020-04-03T20:45Z	0.808	false
2020-04-03T20:30Z	0.808	false
2020-04-03T20:15Z	0.809	false
2020-04-03T20:00Z	0.808	false
2020-04-03T19:45Z	0.808	false
2020-04-03T19:30Z	0.807	false
2020-04-03T19:15Z	0.808	false
2020-04-03T19:00Z	0.807	false
2020-04-03T18:45Z	0.807	false
2020-04-03T18:30Z	0.808	false
2020-04-03T18:15Z	0.808	false
2020-04-03T18:00Z	0.808	false
2020-04-03T17:45Z	0.807	false
2020-04-03T17:30Z	0.806	false
2020-04-03T17:15Z	0.807	false
2020-04-03T17:00Z	0.806	false
2020-04-03T16:45Z	0.806	false
2020-04-03T16:30Z	0.806	false
2020-04-03T16:15Z	0.807	false
2020-04-03T16:00Z	0.807	false
2020-04-03T15:45Z	0.807	false
2020-04-03T15:30Z	0.808	false
2020-04-03T15:15Z	0.808	false
2020-04-03T15:00Z	0.807	false
2020-04-03T14:45Z	0.808	false
2020-04-03T14:30Z	0.808	false
2020-04-03T14:15Z	0.808	false
2020-04-03T14:00Z	0.807	false
2020-04-03T13:45Z	0.808	false
2020-04-03T13:30Z	0.808	false
2020-04-03T13:15Z	0.809	false
2020-04-03T13:00Z	0.809	false
2020-04-03T12:45Z	0.808	false
2020-04-03T12:30Z	0.809	false
2020-04-03T12:15Z	0.809	false
2020-04-03T12:00Z	0.808	false
2020-04-03T11:45Z	0.808	false
2020-04-03T11:30Z	0.808	false
2020-04-03T11:15Z	0.808	false
2020-04-03T11:00Z	0.808	false
2020-04-03T10:45Z	0.808	false
2020-04-03T10:30Z	0.808	false
2020-04-03T10:15Z	0.808	false
2020-04-03T10:00Z	0.808	false
2020-04-03T09:45Z	0.808	false
2020-04-03T09:30Z	0.807	false
2020-04-03T09:15Z	0.807	false
2020-04-03T09:00Z	0.806	false
2020-04-03T08:45Z	0.806	false
2020-04-03T08:30Z	0.807	false
2020-04-03T08:15Z	0.807	false
2020-04-03T08:00Z	0.806	false
2020-04-03T07:45Z	0.806	false
2020-04-03T07:30Z	0.806	false
2020-04-03T07:15Z	0.807	false
2020-04-03T07:00Z	0.806	false
2020-04-03T06:45Z	0.806	false
2020-04-03T06:30Z	0.806	false
2020-04-03T06:15Z	0.807	false
2020-04-03T06:00Z	0.807	false
2020-04-03T05:45Z	0.808	false
2020-04-03T05:30Z	0.807	false
2020-04-03T05:15Z	0.808	false
2020-04-03T05:00Z	0.808	false
2020-04-03T04:45Z	0.808	false
2020-04-03T04:30Z	0.808	false
2020-04-03T04:15Z	0.808	false
2020-04-03T04:00Z	0.808	false
2020-04-03T03:45Z	0.808	false
2020-04-03T03:30Z	0.809	false
2020-04-03T03:15Z	0.81	false
2020-04-03T03:00Z	0.811	false
2020-04-03T02:45Z	0.81	false
2020-04-03T02:30Z	0.809	false
2020-04-03T02:15Z	0.807	false
2020-04-03T02:00Z	0.81	false
2020-04-03T01:45Z	0.809	false
2020-04-03T01:30Z	0.809	false
2020-04-03T01:15Z	0.809	false
2020-04-03T01:00Z	0.81	false
2020-04-03T00:45Z	0.81	false
2020-04-03T00:30Z	0.81	false
2020-04-03T00:15Z	0.81	false
2020-04-03T00:00Z	0.81	false
2020-04-02T23:45Z	0.81	false
2020-04-02T23:30Z	0.812	false
2020-04-02T23:15Z	0.812	false
2020-04-02T23:00Z	0.812	false
2020-04-02T22:45Z	0.813	false
2020-04-02T22:30Z	0.813	false
2020-04-02T22:15Z	0.813	false
2020-04-02T22:00Z	0.812	false
2020-04-02T21:45Z	0.81	false
2020-04-02T21:30Z	0.808	false
2020-04-02T21:15Z	0.808	false
2020-04-02T21:00Z	0.808	false
2020-04-02T20:45Z	0.807	false
2020-04-02T20:30Z	0.807	false
2020-04-02T20:15Z	0.807	false
2020-04-02T20:00Z	0.808	false
2020-04-02T19:45Z	0.808	false
2020-04-02T19:30Z	0.808	false
2020-04-02T19:15Z	0.808	false
2020-04-02T19:00Z	0.807	false
2020-04-02T18:45Z	0.807	false
2020-04-02T18:30Z	0.807	false
2020-04-02T18:15Z	0.807	false
2020-04-02T18:00Z	0.807	false
2020-04-02T17:45Z	0.808	false
2020-04-02T17:30Z	0.808	false
2020-04-02T17:15Z	0.808	false
2020-04-02T17:00Z	0.808	false
2020-04-02T16:45Z	0.808	false
2020-04-02T16:30Z	0.808	false
2020-04-02T16:15Z	0.808	false
2020-04-02T16:00Z	0.807	false
2020-04-02T15:45Z	0.807	false
2020-04-02T15:30Z	0.807	false
2020-04-02T15:15Z	0.807	false
2020-04-02T15:00Z	0.808	false
2020-04-02T14:45Z	0.808	false
2020-04-02T14:30Z	0.808	false
2020-04-02T14:15Z	0.808	false
2020-04-02T14:00Z	0.809	false
2020-04-02T13:45Z	0.809	false
2020-04-02T13:30Z	0.808	false
2020-04-02T13:15Z	0.809	false
2020-04-02T13:00Z	0.809	false
2020-04-02T12:45Z	0.809	false
2020-04-02T12:30Z	0.809	false
2020-04-02T12:15Z	0.81	false
2020-04-02T12:00Z	0.81	false
2020-04-02T11:45Z	0.81	false
2020-04-02T11:30Z	0.81	false
2020-04-02T11:15Z	0.81	false
2020-04-02T11:00Z	0.811	false
2020-04-02T10:45Z	0.816	false
2020-04-02T10:30Z	0.815	false
2020-04-02T10:15Z	0.816	false
2020-04-02T10:00Z	0.778	false
2020-04-02T09:45Z	0.743	false
2020-04-02T09:30Z	0.744	false
2020-04-02T09:15Z	0.745	false
2020-04-02T09:00Z	0.746	false
2020-04-02T08:45Z	0.752	false
2020-04-02T08:30Z	0.819	false
2020-04-02T08:15Z	0.818	false
2020-04-02T08:00Z	0.82	false
2020-04-02T07:45Z	0.819	false
2020-04-02T07:30Z	0.819	false
2020-04-02T07:15Z	0.819	false
2020-04-02T07:00Z	0.819	false
2020-04-02T06:45Z	0.82	false
2020-04-02T06:30Z	0.82	false
2020-04-02T06:15Z	0.82	false
2020-04-02T06:00Z	0.82	false
2020-04-02T05:45Z	0.82	false
2020-04-02T05:30Z	0.82	false
2020-04-02T05:15Z	0.821	false
2020-04-02T05:00Z	0.82	false
2020-04-02T04:45Z	0.82	false
2020-04-02T04:30Z	0.821	false
2020-04-02T04:15Z	0.821	false
2020-04-02T04:00Z	0.821	false
2020-04-02T03:45Z	0.821	false
2020-04-02T03:30Z	0.821	false
2020-04-02T03:15Z	0.821	false
2020-04-02T03:00Z	0.821	false
2020-04-02T02:45Z	0.822	false
2020-04-02T02:30Z	0.822	false
2020-04-02T02:15Z	0.822	false
2020-04-02T02:00Z	0.822	false
2020-04-02T01:45Z	0.822	false
2020-04-02T01:30Z	0.823	false
2020-04-02T01:15Z	0.823	false
2020-04-02T01:00Z	0.823	false
2020-04-02T00:45Z	0.823	false
2020-04-02T00:30Z	0.823	false
2020-04-02T00:15Z	0.823	false
2020-04-02T00:00Z	0.823	false
2020-04-01T23:45Z	0.823	false
2020-04-01T23:30Z	0.823	false
2020-04-01T23:15Z	0.823	false
2020-04-01T23:00Z	0.824	false
2020-04-01T22:45Z	0.824	false
2020-04-01T22:30Z	0.824	false
2020-04-01T22:15Z	0.824	false
2020-04-01T22:00Z	0.824	false
2020-04-01T21:45Z	0.823	false
2020-04-01T21:30Z	0.824	false
2020-04-01T21:15Z	0.824	false
2020-04-01T21:00Z	0.824	false
2020-04-01T20:45Z	0.824	false
2020-04-01T20:30Z	0.823	false
2020-04-01T20:15Z	0.824	false
2020-04-01T20:00Z	0.824	false
2020-04-01T19:45Z	0.823	false
2020-04-01T19:30Z	0.824	false
2020-04-01T19:15Z	0.824	false
2020-04-01T19:00Z	0.824	false
2020-04-01T18:45Z	0.824	false
2020-04-01T18:30Z	0.824	false
2020-04-01T18:15Z	0.824	false
2020-04-01T18:00Z	0.823	false
2020-04-01T17:45Z	0.824	false
2020-04-01T17:30Z	0.824	false
2020-04-01T17:15Z	0.824	false
2020-04-01T17:00Z	0.825	false
2020-04-01T16:45Z	0.825	false
2020-04-01T16:30Z	0.825	false
2020-04-01T16:15Z	0.825	false
2020-04-01T16:00Z	0.824	false
2020-04-01T15:45Z	0.824	false
2020-04-01T15:30Z	0.824	false
2020-04-01T15:15Z	0.824	false
2020-04-01T15:00Z	0.824	false
2020-04-01T14:45Z	0.824	false
2020-04-01T14:30Z	0.825	false
2020-04-01T14:15Z	0.824	false
2020-04-01T14:00Z	0.824	false
2020-04-01T13:45Z	0.824	false
2020-04-01T13:30Z	0.824	false
2020-04-01T13:15Z	0.824	false
2020-04-01T13:00Z	0.824	false
2020-04-01T12:45Z	0.824	false
2020-04-01T12:30Z	0.824	false
2020-04-01T12:15Z	0.823	false
2020-04-01T12:00Z	0.823	false
2020-04-01T11:45Z	0.823	false
2020-04-01T11:30Z	0.823	false
2020-04-01T11:15Z	0.823	false
2020-04-01T11:00Z	0.823	false
2020-04-01T10:45Z	0.823	false
2020-04-01T10:30Z	0.822	false
2020-04-01T10:15Z	0.822	false
2020-04-01T10:00Z	0.822	false
2020-04-01T09:45Z	0.821	false
2020-04-01T09:30Z	0.821	false
2020-04-01T09:15Z	0.821	false
2020-04-01T09:00Z	0.82	false
2020-04-01T08:45Z	0.82	false
2020-04-01T08:30Z	0.82	false
2020-04-01T08:15Z	0.82	false
2020-04-01T08:00Z	0.82	false
2020-04-01T07:45Z	0.82	false
2020-04-01T07:30Z	0.82	false
2020-04-01T07:15Z	0.821	false
2020-04-01T07:00Z	0.82	false
2020-04-01T06:45Z	0.82	false
2020-04-01T06:30Z	0.821	false
2020-04-01T06:15Z	0.821	false
2020-04-01T06:00Z	0.821	false
2020-04-01T05:45Z	0.821	false
2020-04-01T05:30Z	0.821	false
2020-04-01T05:15Z	0.821	false
2020-04-01T05:00Z	0.822	false
2020-04-01T04:45Z	0.822	false
2020-04-01T04:30Z	0.822	false
2020-04-01T04:15Z	0.822	false
2020-04-01T04:00Z	0.822	false
2020-04-01T03:45Z	0.823	false
2020-04-01T03:30Z	0.822	false
2020-04-01T03:15Z	0.823	false
2020-04-01T03:00Z	0.823	false
2020-04-01T02:45Z	0.823	false
2020-04-01T02:30Z	0.824	false
2020-04-01T02:15Z	0.824	false
2020-04-01T02:00Z	0.824	false
2020-04-01T01:45Z	0.824	false
2020-04-01T01:30Z	0.824	false
2020-04-01T01:15Z	0.825	false
2020-04-01T01:00Z	0.825	false
2020-04-01T00:45Z	0.825	false
2020-04-01T00:30Z	0.825	false
2020-04-01T00:15Z	0.825	false
2020-04-01T00:00Z	0.825	false
2020-03-31T23:45Z	0.825	false
2020-03-31T23:30Z	0.826	false
2020-03-31T23:15Z	0.825	false
2020-03-31T23:00Z	0.825	false
2020-03-31T22:45Z	0.825	false
2020-03-31T22:30Z	0.825	false
2020-03-31T22:15Z	0.825	false
2020-03-31T22:00Z	0.826	false
2020-03-31T21:45Z	0.826	false
2020-03-31T21:30Z	0.826	false
2020-03-31T21:15Z	0.827	false
2020-03-31T21:00Z	0.827	false
2020-03-31T20:45Z	0.826	false
2020-03-31T20:30Z	0.827	false
2020-03-31T20:15Z	0.826	false
2020-03-31T20:00Z	0.826	false
2020-03-31T19:45Z	0.827	false
2020-03-31T19:30Z	0.827	false
2020-03-31T19:15Z	0.827	false
2020-03-31T19:00Z	0.828	false
2020-03-31T18:45Z	0.828	false
2020-03-31T18:30Z	0.827	false
2020-03-31T18:15Z	0.828	false
2020-03-31T18:00Z	0.827	false
2020-03-31T17:45Z	0.828	false
2020-03-31T17:30Z	0.827	false
2020-03-31T17:15Z	0.826	false
2020-03-31T17:00Z	0.826	false
2020-03-31T16:45Z	0.826	false
2020-03-31T16:30Z	0.826	false
2020-03-31T16:15Z	0.826	false
2020-03-31T16:00Z	0.826	false
2020-03-31T15:45Z	0.826	false
2020-03-31T15:30Z	0.827	false
2020-03-31T15:15Z	0.827	false
2020-03-31T15:00Z	0.827	false
2020-03-31T14:45Z	0.826	false
2020-03-31T14:30Z	0.827	false
2020-03-31T14:15Z	0.827	false
2020-03-31T14:00Z	0.827	false
2020-03-31T13:45Z	0.828	false
2020-03-31T13:30Z	0.828	false
2020-03-31T13:15Z	0.828	false
2020-03-31T13:00Z	0.829	false
2020-03-31T12:45Z	0.829	false
2020-03-31T12:30Z	0.829	false
2020-03-31T12:15Z	0.83	false
2020-03-31T12:00Z	0.83	false
2020-03-31T11:45Z	0.83	false
2020-03-31T11:30Z	0.83	false
2020-03-31T11:15Z	0.831	false
2020-03-31T11:00Z	0.829	false
2020-03-31T10:45Z	0.828	false
2020-03-31T10:30Z	0.827	false
2020-03-31T10:15Z	0.827	false
2020-03-31T10:00Z	0.827	false
2020-03-31T09:45Z	0.826	false
2020-03-31T09:30Z	0.826	false
2020-03-31T09:15Z	0.826	false
2020-03-31T09:00Z	0.826	false
2020-03-31T08:45Z	0.826	false
2020-03-31T08:30Z	0.825	false
2020-03-31T08:15Z	0.825	false
2020-03-31T08:00Z	0.825	false
2020-03-31T07:45Z	0.825	false
2020-03-31T07:30Z	0.825	false
2020-03-31T07:15Z	0.825	false
2020-03-31T07:00Z	0.825	false
2020-03-31T06:45Z	0.825	false
2020-03-31T06:30Z	0.825	false
2020-03-31T06:15Z	0.826	false
2020-03-31T06:00Z	0.826	false
2020-03-31T05:45Z	0.826	false
2020-03-31T05:30Z	0.826	false
2020-03-31T05:15Z	0.826	false
2020-03-31T05:00Z	0.826	false
2020-03-31T04:45Z	0.826	false
2020-03-31T04:30Z	0.827	false
2020-03-31T04:15Z	0.827	false
2020-03-31T04:00Z	0.828	false
2020-03-31T03:45Z	0.828	false
2020-03-31T03:30Z	0.827	false
2020-03-31T03:15Z	0.828	false
2020-03-31T03:00Z	0.828	false
2020-03-31T02:45Z	0.828	false
2020-03-31T02:30Z	0.829	false
2020-03-31T02:15Z	0.829	false
2020-03-31T02:00Z	0.829	false
2020-03-31T01:45Z	0.829	false
2020-03-31T01:30Z	0.829	false
2020-03-31T01:15Z	0.829	false
2020-03-31T01:00Z	0.829	false
2020-03-31T00:45Z	0.829	false
2020-03-31T00:30Z	0.83	false
2020-03-31T00:15Z	0.83	false
2020-03-31T00:00Z	0.83	false
2020-03-30T23:45Z	0.83	false
2020-03-30T23:30Z	0.829	false
2020-03-30T23:15Z	0.829	false
2020-03-30T23:00Z	0.83	false
2020-03-30T22:45Z	0.83	false
2020-03-30T22:30Z	0.829	false
2020-03-30T22:15Z	0.829	false
2020-03-30T22:00Z	0.829	false
2020-03-30T21:45Z	0.829	false
2020-03-30T21:30Z	0.829	false
2020-03-30T21:15Z	0.83	false
2020-03-30T21:00Z	0.83	false
2020-03-30T20:45Z	0.83	false
2020-03-30T20:30Z	0.83	false
2020-03-30T20:15Z	0.83	false
2020-03-30T20:00Z	0.83	false
2020-03-30T19:45Z	0.83	false
2020-03-30T19:30Z	0.83	false
2020-03-30T19:15Z	0.83	false
2020-03-30T19:00Z	0.83	false
2020-03-30T18:45Z	0.83	false
2020-03-30T18:30Z	0.831	false
2020-03-30T18:15Z	0.83	false
2020-03-30T18:00Z	0.83	false
2020-03-30T17:45Z	0.831	false
2020-03-30T17:30Z	0.83	false
2020-03-30T17:15Z	0.83	false
2020-03-30T17:00Z	0.83	false
2020-03-30T16:45Z	0.83	false
2020-03-30T16:30Z	0.83	false
2020-03-30T16:15Z	0.83	false
2020-03-30T16:00Z	0.83	false
2020-03-30T15:45Z	0.83	false
2020-03-30T15:30Z	0.83	false
2020-03-30T15:15Z	0.83	false
2020-03-30T15:00Z	0.83	false
2020-03-30T14:45Z	0.83	false
2020-03-30T14:30Z	0.83	false
2020-03-30T14:15Z	0.829	false
2020-03-30T14:00Z	0.829	false
2020-03-30T13:45Z	0.829	false
2020-03-30T13:30Z	0.829	false
2020-03-30T13:15Z	0.829	false
2020-03-30T13:00Z	0.83	false
2020-03-30T12:45Z	0.83	false
2020-03-30T12:30Z	0.829	false
2020-03-30T12:15Z	0.829	false
2020-03-30T12:00Z	0.829	false
2020-03-30T11:45Z	0.83	false
2020-03-30T11:30Z	0.829	false
2020-03-30T11:15Z	0.829	false
2020-03-30T11:00Z	0.828	false
2020-03-30T10:45Z	0.828	false
2020-03-30T10:30Z	0.828	false
2020-03-30T10:15Z	0.826	false
2020-03-30T10:00Z	0.827	false
2020-03-30T09:45Z	0.827	false
2020-03-30T09:30Z	0.827	false
2020-03-30T09:15Z	0.827	false
2020-03-30T09:00Z	0.826	false
2020-03-30T08:45Z	0.826	false
2020-03-30T08:30Z	0.828	false
2020-03-30T08:15Z	0.83	false
2020-03-30T08:00Z	0.83	false
2020-03-30T07:45Z	0.83	false
2020-03-30T07:30Z	0.831	false
2020-03-30T07:15Z	0.832	false
2020-03-30T07:00Z	0.832	false
2020-03-30T06:45Z	0.832	false
2020-03-30T06:30Z	0.832	false
2020-03-30T06:15Z	0.832	false
2020-03-30T06:00Z	0.832	false
2020-03-30T05:45Z	0.832	false
2020-03-30T05:30Z	0.832	false
2020-03-30T05:15Z	0.832	false
2020-03-30T05:00Z	0.832	false
2020-03-30T04:45Z	0.832	false

Forecast data

Key information

• Station name: City Mill
• Station ID: 1052
• River name: River Itchen
• Typical range: 0.39m to 0.78m
• Highest level on record: 1.28m on 12 February 2014
• Site datum: 34.72mAOD (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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