River level River Foss at York Castle Mills Sluices

Check for flood warnings in this area

Latest recorded level 7.60m at 3:45am Sunday 18 April 2021.

River levels at this location in the last 5 days

Now
▼

• Measured level
• When the water level reaches 7.80m here, minor flooding is possible in this area
• Highest recorded level. Hide
• Show highest recorded level

You're missing out. A graph should be visible here.
Upgrade your browser to see and use all the features of this service.

You're missing out. A graph should be visible here.

Javascript must be enabled.

Observed data

DateTime	Value	Error
2021-04-18T02:45Z	7.596	false
2021-04-18T02:30Z	7.597	false
2021-04-18T02:15Z	7.601	false
2021-04-18T02:00Z	7.608	false
2021-04-18T01:45Z	7.607	false
2021-04-18T01:30Z	7.605	false
2021-04-18T01:15Z	7.604	false
2021-04-18T01:00Z	7.601	false
2021-04-18T00:45Z	7.6	false
2021-04-18T00:30Z	7.596	false
2021-04-18T00:15Z	7.596	false
2021-04-18T00:00Z	7.597	false
2021-04-17T23:45Z	7.601	false
2021-04-17T23:30Z	7.604	false
2021-04-17T23:15Z	7.604	false
2021-04-17T23:00Z	7.601	false
2021-04-17T22:45Z	7.601	false
2021-04-17T22:30Z	7.599	false
2021-04-17T22:15Z	7.601	false
2021-04-17T22:00Z	7.602	false
2021-04-17T21:45Z	7.602	false
2021-04-17T21:30Z	7.6	false
2021-04-17T21:15Z	7.6	false
2021-04-17T21:00Z	7.598	false
2021-04-17T20:45Z	7.603	false
2021-04-17T20:30Z	7.604	false
2021-04-17T20:15Z	7.603	false
2021-04-17T20:00Z	7.599	false
2021-04-17T19:45Z	7.6	false
2021-04-17T19:30Z	7.598	false
2021-04-17T19:15Z	7.601	false
2021-04-17T19:00Z	7.601	false
2021-04-17T18:45Z	7.601	false
2021-04-17T18:30Z	7.6	false
2021-04-17T18:15Z	7.6	false
2021-04-17T18:00Z	7.601	false
2021-04-17T17:45Z	7.599	false
2021-04-17T17:30Z	7.602	false
2021-04-17T17:15Z	7.601	false
2021-04-17T17:00Z	7.602	false
2021-04-17T16:45Z	7.602	false
2021-04-17T16:30Z	7.603	false
2021-04-17T16:15Z	7.6	false
2021-04-17T16:00Z	7.603	false
2021-04-17T15:45Z	7.602	false
2021-04-17T15:30Z	7.602	false
2021-04-17T15:15Z	7.603	false
2021-04-17T15:00Z	7.604	false
2021-04-17T14:45Z	7.603	false
2021-04-17T14:30Z	7.601	false
2021-04-17T14:15Z	7.602	false
2021-04-17T14:00Z	7.601	false
2021-04-17T13:45Z	7.605	false
2021-04-17T13:30Z	7.604	false
2021-04-17T13:15Z	7.603	false
2021-04-17T13:00Z	7.603	false
2021-04-17T12:45Z	7.603	false
2021-04-17T12:30Z	7.605	false
2021-04-17T12:15Z	7.602	false
2021-04-17T12:00Z	7.6	false
2021-04-17T11:45Z	7.599	false
2021-04-17T11:30Z	7.6	false
2021-04-17T11:15Z	7.6	false
2021-04-17T11:00Z	7.602	false
2021-04-17T10:45Z	7.6	false
2021-04-17T10:30Z	7.6	false
2021-04-17T10:15Z	7.601	false
2021-04-17T10:00Z	7.6	false
2021-04-17T09:45Z	7.6	false
2021-04-17T09:30Z	7.601	false
2021-04-17T09:15Z	7.602	false
2021-04-17T09:00Z	7.603	false
2021-04-17T08:45Z	7.604	false
2021-04-17T08:30Z	7.603	false
2021-04-17T08:15Z	7.603	false
2021-04-17T08:00Z	7.601	false
2021-04-17T07:45Z	7.601	false
2021-04-17T07:30Z	7.604	false
2021-04-17T07:15Z	7.604	false
2021-04-17T07:00Z	7.603	false
2021-04-17T06:45Z	7.603	false
2021-04-17T06:30Z	7.6	false
2021-04-17T06:15Z	7.601	false
2021-04-17T06:00Z	7.603	false
2021-04-17T05:45Z	7.6	false
2021-04-17T05:30Z	7.603	false
2021-04-17T05:15Z	7.602	false
2021-04-17T05:00Z	7.602	false
2021-04-17T04:45Z	7.6	false
2021-04-17T04:30Z	7.601	false
2021-04-17T04:15Z	7.602	false
2021-04-17T04:00Z	7.605	false
2021-04-17T03:45Z	7.603	false
2021-04-17T03:30Z	7.601	false
2021-04-17T03:15Z	7.603	false
2021-04-17T03:00Z	7.602	false
2021-04-17T02:45Z	7.601	false
2021-04-17T02:30Z	7.603	false
2021-04-17T02:15Z	7.601	false
2021-04-17T02:00Z	7.602	false
2021-04-17T01:45Z	7.601	false
2021-04-17T01:30Z	7.601	false
2021-04-17T01:15Z	7.601	false
2021-04-17T01:00Z	7.603	false
2021-04-17T00:45Z	7.601	false
2021-04-17T00:30Z	7.6	false
2021-04-17T00:15Z	7.603	false
2021-04-17T00:00Z	7.603	false
2021-04-16T23:45Z	7.601	false
2021-04-16T23:30Z	7.602	false
2021-04-16T23:15Z	7.602	false
2021-04-16T23:00Z	7.602	false
2021-04-16T22:45Z	7.603	false
2021-04-16T22:30Z	7.604	false
2021-04-16T22:15Z	7.601	false
2021-04-16T22:00Z	7.6	false
2021-04-16T21:45Z	7.602	false
2021-04-16T21:30Z	7.603	false
2021-04-16T21:15Z	7.602	false
2021-04-16T21:00Z	7.6	false
2021-04-16T20:45Z	7.6	false
2021-04-16T20:30Z	7.6	false
2021-04-16T20:15Z	7.603	false
2021-04-16T20:00Z	7.603	false
2021-04-16T19:45Z	7.601	false
2021-04-16T19:30Z	7.599	false
2021-04-16T19:15Z	7.601	false
2021-04-16T19:00Z	7.601	false
2021-04-16T18:45Z	7.604	false
2021-04-16T18:30Z	7.604	false
2021-04-16T18:15Z	7.602	false
2021-04-16T18:00Z	7.601	false
2021-04-16T17:45Z	7.6	false
2021-04-16T17:30Z	7.603	false
2021-04-16T17:15Z	7.603	false
2021-04-16T17:00Z	7.606	false
2021-04-16T16:45Z	7.603	false
2021-04-16T16:30Z	7.603	false
2021-04-16T16:15Z	7.602	false
2021-04-16T16:00Z	7.602	false
2021-04-16T15:45Z	7.606	false
2021-04-16T15:30Z	7.604	false
2021-04-16T15:15Z	7.602	false
2021-04-16T15:00Z	7.601	false
2021-04-16T14:45Z	7.602	false
2021-04-16T14:30Z	7.601	false
2021-04-16T14:15Z	7.605	false
2021-04-16T14:00Z	7.603	false
2021-04-16T13:45Z	7.603	false
2021-04-16T13:30Z	7.601	false
2021-04-16T13:15Z	7.648	false
2021-04-16T13:00Z	7.601	false
2021-04-16T12:45Z	7.604	false
2021-04-16T12:30Z	7.603	false
2021-04-16T12:15Z	7.604	false
2021-04-16T12:00Z	7.604	false
2021-04-16T11:45Z	7.606	false
2021-04-16T11:30Z	7.603	false
2021-04-16T11:15Z	7.605	false
2021-04-16T11:00Z	7.603	false
2021-04-16T10:45Z	7.607	false
2021-04-16T10:30Z	7.607	false
2021-04-16T10:15Z	7.606	false
2021-04-16T10:00Z	7.604	false
2021-04-16T09:45Z	7.585	false
2021-04-16T09:30Z	7.601	false
2021-04-16T09:15Z	7.6	false
2021-04-16T09:00Z	7.602	false
2021-04-16T08:45Z	7.662	false
2021-04-16T08:30Z	7.602	false
2021-04-16T08:15Z	7.602	false
2021-04-16T08:00Z	7.601	false
2021-04-16T07:45Z	7.601	false
2021-04-16T07:30Z	7.603	false
2021-04-16T07:15Z	7.603	false
2021-04-16T07:00Z	7.604	false
2021-04-16T06:45Z	7.601	false
2021-04-16T06:30Z	7.601	false
2021-04-16T06:15Z	7.603	false
2021-04-16T06:00Z	7.603	false
2021-04-16T05:45Z	7.603	false
2021-04-16T05:30Z	7.6	false
2021-04-16T05:15Z	7.604	false
2021-04-16T05:00Z	7.603	false
2021-04-16T04:45Z	7.604	false
2021-04-16T04:30Z	7.602	false
2021-04-16T04:15Z	7.601	false
2021-04-16T04:00Z	7.602	false
2021-04-16T03:45Z	7.603	false
2021-04-16T03:30Z	7.603	false
2021-04-16T03:15Z	7.604	false
2021-04-16T03:00Z	7.602	false
2021-04-16T02:45Z	7.6	false
2021-04-16T02:30Z	7.602	false
2021-04-16T02:15Z	7.6	false
2021-04-16T02:00Z	7.603	false
2021-04-16T01:45Z	7.602	false
2021-04-16T01:30Z	7.601	false
2021-04-16T01:15Z	7.601	false
2021-04-16T01:00Z	7.6	false
2021-04-16T00:45Z	7.603	false
2021-04-16T00:30Z	7.6	false
2021-04-16T00:15Z	7.6	false
2021-04-16T00:00Z	7.598	false
2021-04-15T23:45Z	7.601	false
2021-04-15T23:30Z	7.601	false
2021-04-15T23:15Z	7.601	false
2021-04-15T23:00Z	7.603	false
2021-04-15T22:45Z	7.6	false
2021-04-15T22:30Z	7.6	false
2021-04-15T22:15Z	7.599	false
2021-04-15T22:00Z	7.601	false
2021-04-15T21:45Z	7.602	false
2021-04-15T21:30Z	7.601	false
2021-04-15T21:15Z	7.6	false
2021-04-15T21:00Z	7.6	false
2021-04-15T20:45Z	7.598	false
2021-04-15T20:30Z	7.602	false
2021-04-15T20:15Z	7.603	false
2021-04-15T20:00Z	7.6	false
2021-04-15T19:45Z	7.599	false
2021-04-15T19:30Z	7.601	false
2021-04-15T19:15Z	7.6	false
2021-04-15T19:00Z	7.602	false
2021-04-15T18:45Z	7.6	false
2021-04-15T18:30Z	7.6	false
2021-04-15T18:15Z	7.601	false
2021-04-15T18:00Z	7.601	false
2021-04-15T17:45Z	7.604	false
2021-04-15T17:30Z	7.603	false
2021-04-15T17:15Z	7.601	false
2021-04-15T17:00Z	7.6	false
2021-04-15T16:45Z	7.6	false
2021-04-15T16:30Z	7.601	false
2021-04-15T16:15Z	7.606	false
2021-04-15T16:00Z	7.606	false
2021-04-15T15:45Z	7.605	false
2021-04-15T15:30Z	7.602	false
2021-04-15T15:15Z	7.596	false
2021-04-15T15:00Z	7.602	false
2021-04-15T14:45Z	7.609	false
2021-04-15T14:30Z	7.577	false
2021-04-15T14:15Z	7.606	false
2021-04-15T14:00Z	7.563	false
2021-04-15T13:45Z	7.621	false
2021-04-15T13:30Z	7.554	false
2021-04-15T13:15Z	7.579	false
2021-04-15T13:00Z	7.549	false
2021-04-15T12:45Z	7.606	false
2021-04-15T12:30Z	7.611	false
2021-04-15T12:15Z	7.601	false
2021-04-15T12:00Z	7.602	false
2021-04-15T11:45Z	7.6	false
2021-04-15T11:30Z	7.603	false
2021-04-15T11:15Z	7.603	false
2021-04-15T11:00Z	7.602	false
2021-04-15T10:45Z	7.598	false
2021-04-15T10:30Z	7.6	false
2021-04-15T10:15Z	7.603	false
2021-04-15T10:00Z	7.605	false
2021-04-15T09:45Z	7.604	false
2021-04-15T09:30Z	7.602	false
2021-04-15T09:15Z	7.6	false
2021-04-15T09:00Z	7.6	false
2021-04-15T08:45Z	7.601	false
2021-04-15T08:30Z	7.605	false
2021-04-15T08:15Z	7.606	false
2021-04-15T08:00Z	7.605	false
2021-04-15T07:45Z	7.603	false
2021-04-15T07:30Z	7.6	false
2021-04-15T07:15Z	7.601	false
2021-04-15T07:00Z	7.602	false
2021-04-15T06:45Z	7.602	false
2021-04-15T06:30Z	7.603	false
2021-04-15T06:15Z	7.603	false
2021-04-15T06:00Z	7.601	false
2021-04-15T05:45Z	7.604	false
2021-04-15T05:30Z	7.606	false
2021-04-15T05:15Z	7.604	false
2021-04-15T05:00Z	7.601	false
2021-04-15T04:45Z	7.603	false
2021-04-15T04:30Z	7.602	false
2021-04-15T04:15Z	7.606	false
2021-04-15T04:00Z	7.606	false
2021-04-15T03:45Z	7.603	false
2021-04-15T03:30Z	7.601	false
2021-04-15T03:15Z	7.6	false
2021-04-15T03:00Z	7.6	false
2021-04-15T02:45Z	7.601	false
2021-04-15T02:30Z	7.603	false
2021-04-15T02:15Z	7.601	false
2021-04-15T02:00Z	7.603	false
2021-04-15T01:45Z	7.603	false
2021-04-15T01:30Z	7.601	false
2021-04-15T01:15Z	7.603	false
2021-04-15T01:00Z	7.605	false
2021-04-15T00:45Z	7.601	false
2021-04-15T00:30Z	7.603	false
2021-04-15T00:15Z	7.601	false
2021-04-15T00:00Z	7.602	false
2021-04-14T23:45Z	7.603	false
2021-04-14T23:30Z	7.604	false
2021-04-14T23:15Z	7.603	false
2021-04-14T23:00Z	7.603	false
2021-04-14T22:45Z	7.601	false
2021-04-14T22:30Z	7.603	false
2021-04-14T22:15Z	7.604	false
2021-04-14T22:00Z	7.603	false
2021-04-14T21:45Z	7.601	false
2021-04-14T21:30Z	7.601	false
2021-04-14T21:15Z	7.603	false
2021-04-14T21:00Z	7.601	false
2021-04-14T20:45Z	7.602	false
2021-04-14T20:30Z	7.601	false
2021-04-14T20:15Z	7.601	false
2021-04-14T20:00Z	7.605	false
2021-04-14T19:45Z	7.603	false
2021-04-14T19:30Z	7.603	false
2021-04-14T19:15Z	7.602	false
2021-04-14T19:00Z	7.598	false
2021-04-14T18:45Z	7.601	false
2021-04-14T18:30Z	7.601	false
2021-04-14T18:15Z	7.605	false
2021-04-14T18:00Z	7.606	false
2021-04-14T17:45Z	7.603	false
2021-04-14T17:30Z	7.601	false
2021-04-14T17:15Z	7.601	false
2021-04-14T17:00Z	7.598	false
2021-04-14T16:45Z	7.598	false
2021-04-14T16:30Z	7.601	false
2021-04-14T16:15Z	7.604	false
2021-04-14T16:00Z	7.608	false
2021-04-14T15:45Z	7.61	false
2021-04-14T15:30Z	7.607	false
2021-04-14T15:15Z	7.606	false
2021-04-14T15:00Z	7.604	false
2021-04-14T14:45Z	7.603	false
2021-04-14T14:30Z	7.601	false
2021-04-14T14:15Z	7.598	false
2021-04-14T14:00Z	7.598	false
2021-04-14T13:45Z	7.596	false
2021-04-14T13:30Z	7.6	false
2021-04-14T13:15Z	7.607	false
2021-04-14T13:00Z	7.614	false
2021-04-14T12:45Z	7.613	false
2021-04-14T12:30Z	7.611	false
2021-04-14T12:15Z	7.608	false
2021-04-14T12:00Z	7.606	false
2021-04-14T11:45Z	7.605	false
2021-04-14T11:30Z	7.602	false
2021-04-14T11:15Z	7.599	false
2021-04-14T11:00Z	7.6	false
2021-04-14T10:45Z	7.596	false
2021-04-14T10:30Z	7.594	false
2021-04-14T10:15Z	7.595	false
2021-04-14T10:00Z	7.595	false
2021-04-14T09:45Z	7.601	false
2021-04-14T09:30Z	7.605	false
2021-04-14T09:15Z	7.606	false
2021-04-14T09:00Z	7.603	false
2021-04-14T08:45Z	7.575	false
2021-04-14T08:30Z	7.603	false
2021-04-14T08:15Z	7.603	false
2021-04-14T08:00Z	7.605	false
2021-04-14T07:45Z	7.605	false
2021-04-14T07:30Z	7.603	false
2021-04-14T07:15Z	7.603	false
2021-04-14T07:00Z	7.601	false
2021-04-14T06:45Z	7.602	false
2021-04-14T06:30Z	7.601	false
2021-04-14T06:15Z	7.605	false
2021-04-14T06:00Z	7.602	false
2021-04-14T05:45Z	7.6	false
2021-04-14T05:30Z	7.602	false
2021-04-14T05:15Z	7.602	false
2021-04-14T05:00Z	7.602	false
2021-04-14T04:45Z	7.603	false
2021-04-14T04:30Z	7.603	false
2021-04-14T04:15Z	7.604	false
2021-04-14T04:00Z	7.604	false
2021-04-14T03:45Z	7.604	false
2021-04-14T03:30Z	7.601	false
2021-04-14T03:15Z	7.602	false
2021-04-14T03:00Z	7.601	false
2021-04-14T02:45Z	7.605	false
2021-04-14T02:30Z	7.606	false
2021-04-14T02:15Z	7.604	false
2021-04-14T02:00Z	7.602	false
2021-04-14T01:45Z	7.603	false
2021-04-14T01:30Z	7.604	false
2021-04-14T01:15Z	7.605	false
2021-04-14T01:00Z	7.601	false
2021-04-14T00:45Z	7.601	false
2021-04-14T00:30Z	7.602	false
2021-04-14T00:15Z	7.603	false
2021-04-14T00:00Z	7.602	false
2021-04-13T23:45Z	7.602	false
2021-04-13T23:30Z	7.601	false
2021-04-13T23:15Z	7.602	false
2021-04-13T23:00Z	7.601	false
2021-04-13T22:45Z	7.601	false
2021-04-13T22:30Z	7.602	false
2021-04-13T22:15Z	7.605	false
2021-04-13T22:00Z	7.602	false
2021-04-13T21:45Z	7.6	false
2021-04-13T21:30Z	7.603	false
2021-04-13T21:15Z	7.601	false
2021-04-13T21:00Z	7.603	false
2021-04-13T20:45Z	7.6	false
2021-04-13T20:30Z	7.599	false
2021-04-13T20:15Z	7.598	false
2021-04-13T20:00Z	7.6	false
2021-04-13T19:45Z	7.602	false
2021-04-13T19:30Z	7.601	false
2021-04-13T19:15Z	7.603	false
2021-04-13T19:00Z	7.602	false
2021-04-13T18:45Z	7.601	false
2021-04-13T18:30Z	7.6	false
2021-04-13T18:15Z	7.602	false
2021-04-13T18:00Z	7.603	false
2021-04-13T17:45Z	7.602	false
2021-04-13T17:30Z	7.6	false
2021-04-13T17:15Z	7.601	false
2021-04-13T17:00Z	7.599	false
2021-04-13T16:45Z	7.602	false
2021-04-13T16:30Z	7.607	false
2021-04-13T16:15Z	7.605	false
2021-04-13T16:00Z	7.605	false
2021-04-13T15:45Z	7.604	false
2021-04-13T15:30Z	7.605	false
2021-04-13T15:15Z	7.606	false
2021-04-13T15:00Z	7.604	false
2021-04-13T14:45Z	7.606	false
2021-04-13T14:30Z	7.603	false
2021-04-13T14:15Z	7.608	false
2021-04-13T14:00Z	7.607	false
2021-04-13T13:45Z	7.609	false
2021-04-13T13:30Z	7.606	false
2021-04-13T13:15Z	7.603	false
2021-04-13T13:00Z	7.601	false
2021-04-13T12:45Z	7.601	false
2021-04-13T12:30Z	7.601	false
2021-04-13T12:15Z	7.603	false
2021-04-13T12:00Z	7.608	false
2021-04-13T11:45Z	7.609	false
2021-04-13T11:30Z	7.604	false
2021-04-13T11:15Z	7.603	false
2021-04-13T11:00Z	7.597	false
2021-04-13T10:45Z	7.599	false
2021-04-13T10:30Z	7.598	false
2021-04-13T10:15Z	7.603	false
2021-04-13T10:00Z	7.607	false
2021-04-13T09:45Z	7.603	false
2021-04-13T09:30Z	7.602	false
2021-04-13T09:15Z	7.6	false
2021-04-13T09:00Z	7.603	false
2021-04-13T08:45Z	7.603	false
2021-04-13T08:30Z	7.603	false
2021-04-13T08:15Z	7.601	false
2021-04-13T08:00Z	7.602	false
2021-04-13T07:45Z	7.603	false
2021-04-13T07:30Z	7.606	false
2021-04-13T07:15Z	7.605	false
2021-04-13T07:00Z	7.601	false
2021-04-13T06:45Z	7.603	false
2021-04-13T06:30Z	7.602	false
2021-04-13T06:15Z	7.604	false
2021-04-13T06:00Z	7.603	false
2021-04-13T05:45Z	7.603	false
2021-04-13T05:30Z	7.604	false
2021-04-13T05:15Z	7.605	false
2021-04-13T05:00Z	7.606	false
2021-04-13T04:45Z	7.603	false
2021-04-13T04:30Z	7.603	false
2021-04-13T04:15Z	7.602	false
2021-04-13T04:00Z	7.604	false
2021-04-13T03:45Z	7.604	false
2021-04-13T03:30Z	7.606	false
2021-04-13T03:15Z	7.604	false
2021-04-13T03:00Z	7.602	false
2021-04-13T02:45Z	7.604	false
2021-04-13T02:30Z	7.603	false
2021-04-13T02:15Z	7.602	false
2021-04-13T02:00Z	7.606	false
2021-04-13T01:45Z	7.604	false
2021-04-13T01:30Z	7.603	false
2021-04-13T01:15Z	7.603	false
2021-04-13T01:00Z	7.605	false
2021-04-13T00:45Z	7.606	false
2021-04-13T00:30Z	7.603	false
2021-04-13T00:15Z	7.601	false
2021-04-13T00:00Z	7.603	false
2021-04-12T23:45Z	7.607	false
2021-04-12T23:30Z	7.608	false
2021-04-12T23:15Z	7.605	false
2021-04-12T23:00Z	7.603	false
2021-04-12T22:45Z	7.598	false
2021-04-12T22:30Z	7.602	false
2021-04-12T22:15Z	7.601	false
2021-04-12T22:00Z	7.608	false
2021-04-12T21:45Z	7.61	false
2021-04-12T21:30Z	7.607	false
2021-04-12T21:15Z	7.604	false
2021-04-12T21:00Z	7.601	false
2021-04-12T20:45Z	7.599	false
2021-04-12T20:30Z	7.602	false
2021-04-12T20:15Z	7.605	false
2021-04-12T20:00Z	7.608	false
2021-04-12T19:45Z	7.608	false
2021-04-12T19:30Z	7.604	false
2021-04-12T19:15Z	7.604	false
2021-04-12T19:00Z	7.603	false
2021-04-12T18:45Z	7.607	false
2021-04-12T18:30Z	7.605	false
2021-04-12T18:15Z	7.604	false
2021-04-12T18:00Z	7.604	false
2021-04-12T17:45Z	7.604	false
2021-04-12T17:30Z	7.605	false
2021-04-12T17:15Z	7.604	false
2021-04-12T17:00Z	7.603	false
2021-04-12T16:45Z	7.605	false
2021-04-12T16:30Z	7.603	false
2021-04-12T16:15Z	7.606	false
2021-04-12T16:00Z	7.604	false
2021-04-12T15:45Z	7.601	false
2021-04-12T15:30Z	7.603	false
2021-04-12T15:15Z	7.605	false
2021-04-12T15:00Z	7.604	false
2021-04-12T14:45Z	7.604	false

Forecast data

Key information

• Station name: York Castle Mills Sluices
• Station ID: 9387
• River name: River Foss
• Typical range: 7.51m to 7.80m
• Highest level on record: 9.28m on 26 December 2015
• Site datum: -0.05mAOD (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.

Share this page

• Twitter
• Facebook
• Email