River level River Calder at Whalley Weir

Latest recorded level 0.49m at 3:00pm Sunday 20 January 2019.

Levels: last 5 days and next 36 hours

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• Measured level
• Forecast level
• Property flooding possible
• Low lying land may flood
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2019-01-20T15:00Z	0.49	false
2019-01-20T14:45Z	0.49	false
2019-01-20T14:30Z	0.489	false
2019-01-20T14:15Z	0.486	false
2019-01-20T14:00Z	0.489	false
2019-01-20T13:45Z	0.487	false
2019-01-20T13:30Z	0.485	false
2019-01-20T13:15Z	0.485	false
2019-01-20T13:00Z	0.486	false
2019-01-20T12:45Z	0.485	false
2019-01-20T12:30Z	0.483	false
2019-01-20T12:15Z	0.485	false
2019-01-20T12:00Z	0.482	false
2019-01-20T11:45Z	0.48	false
2019-01-20T11:30Z	0.482	false
2019-01-20T11:15Z	0.48	false
2019-01-20T11:00Z	0.479	false
2019-01-20T10:45Z	0.483	false
2019-01-20T10:30Z	0.479	false
2019-01-20T10:15Z	0.48	false
2019-01-20T10:00Z	0.479	false
2019-01-20T09:45Z	0.479	false
2019-01-20T09:30Z	0.479	false
2019-01-20T09:15Z	0.48	false
2019-01-20T09:00Z	0.482	false
2019-01-20T08:45Z	0.483	false
2019-01-20T08:30Z	0.482	false
2019-01-20T08:15Z	0.482	false
2019-01-20T08:00Z	0.484	false
2019-01-20T07:45Z	0.486	false
2019-01-20T07:30Z	0.484	false
2019-01-20T07:15Z	0.485	false
2019-01-20T07:00Z	0.485	false
2019-01-20T06:45Z	0.485	false
2019-01-20T06:30Z	0.488	false
2019-01-20T06:15Z	0.489	false
2019-01-20T06:00Z	0.487	false
2019-01-20T05:45Z	0.49	false
2019-01-20T05:30Z	0.494	false
2019-01-20T05:15Z	0.492	false
2019-01-20T05:00Z	0.493	false
2019-01-20T04:45Z	0.493	false
2019-01-20T04:30Z	0.491	false
2019-01-20T04:15Z	0.494	false
2019-01-20T04:00Z	0.497	false
2019-01-20T03:45Z	0.497	false
2019-01-20T03:30Z	0.499	false
2019-01-20T03:15Z	0.497	false
2019-01-20T03:00Z	0.499	false
2019-01-20T02:45Z	0.499	false
2019-01-20T02:30Z	0.497	false
2019-01-20T02:15Z	0.506	false
2019-01-20T02:00Z	0.5	false
2019-01-20T01:45Z	0.503	false
2019-01-20T01:30Z	0.503	false
2019-01-20T01:15Z	0.507	false
2019-01-20T01:00Z	0.503	false
2019-01-20T00:45Z	0.506	false
2019-01-20T00:30Z	0.506	false
2019-01-20T00:15Z	0.506	false
2019-01-20T00:00Z	0.506	false
2019-01-19T23:45Z	0.507	false
2019-01-19T23:30Z	0.51	false
2019-01-19T23:15Z	0.508	false
2019-01-19T23:00Z	0.511	false
2019-01-19T22:45Z	0.51	false
2019-01-19T22:30Z	0.51	false
2019-01-19T22:15Z	0.51	false
2019-01-19T22:00Z	0.514	false
2019-01-19T21:45Z	0.513	false
2019-01-19T21:30Z	0.512	false
2019-01-19T21:15Z	0.511	false
2019-01-19T21:00Z	0.513	false
2019-01-19T20:45Z	0.515	false
2019-01-19T20:30Z	0.514	false
2019-01-19T20:15Z	0.514	false
2019-01-19T20:00Z	0.515	false
2019-01-19T19:45Z	0.517	false
2019-01-19T19:30Z	0.518	false
2019-01-19T19:15Z	0.515	false
2019-01-19T19:00Z	0.515	false
2019-01-19T18:45Z	0.514	false
2019-01-19T18:30Z	0.52	false
2019-01-19T18:15Z	0.517	false
2019-01-19T18:00Z	0.517	false
2019-01-19T17:45Z	0.518	false
2019-01-19T17:30Z	0.515	false
2019-01-19T17:15Z	0.518	false
2019-01-19T17:00Z	0.52	false
2019-01-19T16:45Z	0.517	false
2019-01-19T16:30Z	0.52	false
2019-01-19T16:15Z	0.515	false
2019-01-19T16:00Z	0.518	false
2019-01-19T15:45Z	0.521	false
2019-01-19T15:30Z	0.517	false
2019-01-19T15:15Z	0.515	false
2019-01-19T15:00Z	0.518	false
2019-01-19T14:45Z	0.514	false
2019-01-19T14:30Z	0.514	false
2019-01-19T14:15Z	0.516	false
2019-01-19T14:00Z	0.512	false
2019-01-19T13:45Z	0.513	false
2019-01-19T13:30Z	0.511	false
2019-01-19T13:15Z	0.514	false
2019-01-19T13:00Z	0.511	false
2019-01-19T12:45Z	0.513	false
2019-01-19T12:30Z	0.513	false
2019-01-19T12:15Z	0.511	false
2019-01-19T12:00Z	0.511	false
2019-01-19T11:45Z	0.509	false
2019-01-19T11:30Z	0.506	false
2019-01-19T11:15Z	0.509	false
2019-01-19T11:00Z	0.508	false
2019-01-19T10:45Z	0.507	false
2019-01-19T10:30Z	0.507	false
2019-01-19T10:15Z	0.504	false
2019-01-19T10:00Z	0.508	false
2019-01-19T09:45Z	0.507	false
2019-01-19T09:30Z	0.507	false
2019-01-19T09:15Z	0.506	false
2019-01-19T09:00Z	0.509	false
2019-01-19T08:45Z	0.507	false
2019-01-19T08:30Z	0.508	false
2019-01-19T08:15Z	0.51	false
2019-01-19T08:00Z	0.513	false
2019-01-19T07:45Z	0.513	false
2019-01-19T07:30Z	0.513	false
2019-01-19T07:15Z	0.514	false
2019-01-19T07:00Z	0.515	false
2019-01-19T06:45Z	0.515	false
2019-01-19T06:30Z	0.517	false
2019-01-19T06:15Z	0.517	false
2019-01-19T06:00Z	0.521	false
2019-01-19T05:45Z	0.521	false
2019-01-19T05:30Z	0.524	false
2019-01-19T05:15Z	0.517	false
2019-01-19T05:00Z	0.523	false
2019-01-19T04:45Z	0.521	false
2019-01-19T04:30Z	0.52	false
2019-01-19T04:15Z	0.521	false
2019-01-19T04:00Z	0.522	false
2019-01-19T03:45Z	0.521	false
2019-01-19T03:30Z	0.518	false
2019-01-19T03:15Z	0.527	false
2019-01-19T03:00Z	0.519	false
2019-01-19T02:45Z	0.531	false
2019-01-19T02:30Z	0.532	false
2019-01-19T02:15Z	0.524	false
2019-01-19T02:00Z	0.527	false
2019-01-19T01:45Z	0.53	false
2019-01-19T01:30Z	0.534	false
2019-01-19T01:15Z	0.528	false
2019-01-19T01:00Z	0.534	false
2019-01-19T00:45Z	0.538	false
2019-01-19T00:30Z	0.532	false
2019-01-19T00:15Z	0.531	false
2019-01-19T00:00Z	0.535	false
2019-01-18T23:45Z	0.535	false
2019-01-18T23:30Z	0.538	false
2019-01-18T23:15Z	0.539	false
2019-01-18T23:00Z	0.542	false
2019-01-18T22:45Z	0.542	false
2019-01-18T22:30Z	0.545	false
2019-01-18T22:15Z	0.539	false
2019-01-18T22:00Z	0.539	false
2019-01-18T21:45Z	0.545	false
2019-01-18T21:30Z	0.545	false
2019-01-18T21:15Z	0.549	false
2019-01-18T21:00Z	0.545	false
2019-01-18T20:45Z	0.548	false
2019-01-18T20:30Z	0.55	false
2019-01-18T20:15Z	0.558	false
2019-01-18T20:00Z	0.558	false
2019-01-18T19:45Z	0.556	false
2019-01-18T19:30Z	0.561	false
2019-01-18T19:15Z	0.563	false
2019-01-18T19:00Z	0.563	false
2019-01-18T18:45Z	0.562	false
2019-01-18T18:30Z	0.552	false
2019-01-18T18:15Z	0.556	false
2019-01-18T18:00Z	0.55	false
2019-01-18T17:45Z	0.555	false
2019-01-18T17:30Z	0.548	false
2019-01-18T17:15Z	0.536	false
2019-01-18T17:00Z	0.513	false
2019-01-18T16:45Z	0.505	false
2019-01-18T16:30Z	0.501	false
2019-01-18T16:15Z	0.501	false
2019-01-18T16:00Z	0.5	false
2019-01-18T15:45Z	0.502	false
2019-01-18T15:30Z	0.503	false
2019-01-18T15:15Z	0.495	false
2019-01-18T15:00Z	0.499	false
2019-01-18T14:45Z	0.501	false
2019-01-18T14:30Z	0.496	false
2019-01-18T14:15Z	0.497	false
2019-01-18T14:00Z	0.495	false
2019-01-18T13:45Z	0.498	false
2019-01-18T13:30Z	0.498	false
2019-01-18T13:15Z	0.496	false
2019-01-18T13:00Z	0.495	false
2019-01-18T12:45Z	0.496	false
2019-01-18T12:30Z	0.493	false
2019-01-18T12:15Z	0.492	false
2019-01-18T12:00Z	0.497	false
2019-01-18T11:45Z	0.497	false
2019-01-18T11:30Z	0.496	false
2019-01-18T11:15Z	0.498	false
2019-01-18T11:00Z	0.496	false
2019-01-18T10:45Z	0.494	false
2019-01-18T10:30Z	0.494	false
2019-01-18T10:15Z	0.494	false
2019-01-18T10:00Z	0.493	false
2019-01-18T09:45Z	0.492	false
2019-01-18T09:30Z	0.491	false
2019-01-18T09:15Z	0.49	false
2019-01-18T09:00Z	0.493	false
2019-01-18T08:45Z	0.49	false
2019-01-18T08:30Z	0.493	false
2019-01-18T08:15Z	0.492	false
2019-01-18T08:00Z	0.493	false
2019-01-18T07:45Z	0.494	false
2019-01-18T07:30Z	0.493	false
2019-01-18T07:15Z	0.496	false
2019-01-18T07:00Z	0.496	false
2019-01-18T06:45Z	0.495	false
2019-01-18T06:30Z	0.497	false
2019-01-18T06:15Z	0.5	false
2019-01-18T06:00Z	0.498	false
2019-01-18T05:45Z	0.504	false
2019-01-18T05:30Z	0.503	false
2019-01-18T05:15Z	0.504	false
2019-01-18T05:00Z	0.503	false
2019-01-18T04:45Z	0.504	false
2019-01-18T04:30Z	0.508	false
2019-01-18T04:15Z	0.509	false
2019-01-18T04:00Z	0.506	false
2019-01-18T03:45Z	0.51	false
2019-01-18T03:30Z	0.513	false
2019-01-18T03:15Z	0.513	false
2019-01-18T03:00Z	0.516	false
2019-01-18T02:45Z	0.517	false
2019-01-18T02:30Z	0.518	false
2019-01-18T02:15Z	0.518	false
2019-01-18T02:00Z	0.52	false
2019-01-18T01:45Z	0.519	false
2019-01-18T01:30Z	0.524	false
2019-01-18T01:15Z	0.521	false
2019-01-18T01:00Z	0.52	false
2019-01-18T00:45Z	0.524	false
2019-01-18T00:30Z	0.527	false
2019-01-18T00:15Z	0.527	false
2019-01-18T00:00Z	0.528	false
2019-01-17T23:45Z	0.53	false
2019-01-17T23:30Z	0.527	false
2019-01-17T23:15Z	0.53	false
2019-01-17T23:00Z	0.53	false
2019-01-17T22:45Z	0.533	false
2019-01-17T22:30Z	0.531	false
2019-01-17T22:15Z	0.533	false
2019-01-17T22:00Z	0.534	false
2019-01-17T21:45Z	0.538	false
2019-01-17T21:30Z	0.538	false
2019-01-17T21:15Z	0.537	false
2019-01-17T21:00Z	0.539	false
2019-01-17T20:45Z	0.535	false
2019-01-17T20:30Z	0.538	false
2019-01-17T20:15Z	0.537	false
2019-01-17T20:00Z	0.541	false
2019-01-17T19:45Z	0.542	false
2019-01-17T19:30Z	0.544	false
2019-01-17T19:15Z	0.546	false
2019-01-17T19:00Z	0.539	false
2019-01-17T18:45Z	0.575	false
2019-01-17T18:30Z	0.595	false
2019-01-17T18:15Z	0.573	false
2019-01-17T18:00Z	0.496	false
2019-01-17T17:45Z	0.512	false
2019-01-17T17:30Z	0.556	false
2019-01-17T17:15Z	0.556	false
2019-01-17T17:00Z	0.558	false
2019-01-17T16:45Z	0.559	false
2019-01-17T16:30Z	0.559	false
2019-01-17T16:15Z	0.562	false
2019-01-17T16:00Z	0.559	false
2019-01-17T15:45Z	0.56	false
2019-01-17T15:30Z	0.562	false
2019-01-17T15:15Z	0.562	false
2019-01-17T15:00Z	0.565	false
2019-01-17T14:45Z	0.565	false
2019-01-17T14:30Z	0.565	false
2019-01-17T14:15Z	0.566	false
2019-01-17T14:00Z	0.563	false
2019-01-17T13:45Z	0.567	false
2019-01-17T13:30Z	0.563	false
2019-01-17T13:15Z	0.569	false
2019-01-17T13:00Z	0.569	false
2019-01-17T12:45Z	0.57	false
2019-01-17T12:30Z	0.57	false
2019-01-17T12:15Z	0.566	false
2019-01-17T12:00Z	0.566	false
2019-01-17T11:45Z	0.567	false
2019-01-17T11:30Z	0.567	false
2019-01-17T11:15Z	0.57	false
2019-01-17T11:00Z	0.569	false
2019-01-17T10:45Z	0.572	false
2019-01-17T10:30Z	0.573	false
2019-01-17T10:15Z	0.571	false
2019-01-17T10:00Z	0.573	false
2019-01-17T09:45Z	0.573	false
2019-01-17T09:30Z	0.573	false
2019-01-17T09:15Z	0.575	false
2019-01-17T09:00Z	0.572	false
2019-01-17T08:45Z	0.576	false
2019-01-17T08:30Z	0.576	false
2019-01-17T08:15Z	0.579	false
2019-01-17T08:00Z	0.577	false
2019-01-17T07:45Z	0.58	false
2019-01-17T07:30Z	0.581	false
2019-01-17T07:15Z	0.584	false
2019-01-17T07:00Z	0.584	false
2019-01-17T06:45Z	0.586	false
2019-01-17T06:30Z	0.588	false
2019-01-17T06:15Z	0.587	false
2019-01-17T06:00Z	0.59	false
2019-01-17T05:45Z	0.592	false
2019-01-17T05:30Z	0.594	false
2019-01-17T05:15Z	0.594	false
2019-01-17T05:00Z	0.597	false
2019-01-17T04:45Z	0.597	false
2019-01-17T04:30Z	0.6	false
2019-01-17T04:15Z	0.602	false
2019-01-17T04:00Z	0.6	false
2019-01-17T03:45Z	0.602	false
2019-01-17T03:30Z	0.605	false
2019-01-17T03:15Z	0.605	false
2019-01-17T03:00Z	0.61	false
2019-01-17T02:45Z	0.611	false
2019-01-17T02:30Z	0.612	false
2019-01-17T02:15Z	0.614	false
2019-01-17T02:00Z	0.616	false
2019-01-17T01:45Z	0.616	false
2019-01-17T01:30Z	0.616	false
2019-01-17T01:15Z	0.616	false
2019-01-17T01:00Z	0.616	false
2019-01-17T00:45Z	0.616	false
2019-01-17T00:30Z	0.617	false
2019-01-17T00:15Z	0.621	false
2019-01-17T00:00Z	0.622	false
2019-01-16T23:45Z	0.623	false
2019-01-16T23:30Z	0.624	false
2019-01-16T23:15Z	0.623	false
2019-01-16T23:00Z	0.621	false
2019-01-16T22:45Z	0.615	false
2019-01-16T22:30Z	0.614	false
2019-01-16T22:15Z	0.611	false
2019-01-16T22:00Z	0.613	false
2019-01-16T21:45Z	0.613	false
2019-01-16T21:30Z	0.614	false
2019-01-16T21:15Z	0.618	false
2019-01-16T21:00Z	0.618	false
2019-01-16T20:45Z	0.62	false
2019-01-16T20:30Z	0.619	false
2019-01-16T20:15Z	0.613	false
2019-01-16T20:00Z	0.608	false
2019-01-16T19:45Z	0.604	false
2019-01-16T19:30Z	0.596	false
2019-01-16T19:15Z	0.593	false
2019-01-16T19:00Z	0.587	false
2019-01-16T18:45Z	0.587	false
2019-01-16T18:30Z	0.587	false
2019-01-16T18:15Z	0.586	false
2019-01-16T18:00Z	0.586	false
2019-01-16T17:45Z	0.588	false
2019-01-16T17:30Z	0.593	false
2019-01-16T17:15Z	0.596	false
2019-01-16T17:00Z	0.598	false
2019-01-16T16:45Z	0.603	false
2019-01-16T16:30Z	0.602	false
2019-01-16T16:15Z	0.604	false
2019-01-16T16:00Z	0.604	false
2019-01-16T15:45Z	0.605	false
2019-01-16T15:30Z	0.605	false
2019-01-16T15:15Z	0.607	false
2019-01-16T15:00Z	0.608	false
2019-01-16T14:45Z	0.608	false
2019-01-16T14:30Z	0.607	false
2019-01-16T14:15Z	0.607	false
2019-01-16T14:00Z	0.602	false
2019-01-16T13:45Z	0.603	false
2019-01-16T13:30Z	0.602	false
2019-01-16T13:15Z	0.598	false
2019-01-16T13:00Z	0.601	false
2019-01-16T12:45Z	0.598	false
2019-01-16T12:30Z	0.595	false
2019-01-16T12:15Z	0.59	false
2019-01-16T12:00Z	0.58	false
2019-01-16T11:45Z	0.57	false
2019-01-16T11:30Z	0.559	false
2019-01-16T11:15Z	0.556	false
2019-01-16T11:00Z	0.555	false
2019-01-16T10:45Z	0.549	false
2019-01-16T10:30Z	0.548	false
2019-01-16T10:15Z	0.54	false
2019-01-16T10:00Z	0.531	false
2019-01-16T09:45Z	0.525	false
2019-01-16T09:30Z	0.524	false
2019-01-16T09:15Z	0.522	false
2019-01-16T09:00Z	0.522	false
2019-01-16T08:45Z	0.521	false
2019-01-16T08:30Z	0.521	false
2019-01-16T08:15Z	0.518	false
2019-01-16T08:00Z	0.519	false
2019-01-16T07:45Z	0.518	false
2019-01-16T07:30Z	0.521	false
2019-01-16T07:15Z	0.52	false
2019-01-16T07:00Z	0.516	false
2019-01-16T06:45Z	0.52	false
2019-01-16T06:30Z	0.521	false
2019-01-16T06:15Z	0.52	false
2019-01-16T06:00Z	0.523	false
2019-01-16T05:45Z	0.521	false
2019-01-16T05:30Z	0.522	false
2019-01-16T05:15Z	0.523	false
2019-01-16T05:00Z	0.526	false
2019-01-16T04:45Z	0.523	false
2019-01-16T04:30Z	0.524	false
2019-01-16T04:15Z	0.531	false
2019-01-16T04:00Z	0.528	false
2019-01-16T03:45Z	0.531	false
2019-01-16T03:30Z	0.53	false
2019-01-16T03:15Z	0.532	false
2019-01-16T03:00Z	0.531	false
2019-01-16T02:45Z	0.533	false
2019-01-16T02:30Z	0.532	false
2019-01-16T02:15Z	0.531	false
2019-01-16T02:00Z	0.534	false
2019-01-16T01:45Z	0.536	false
2019-01-16T01:30Z	0.537	false
2019-01-16T01:15Z	0.538	false
2019-01-16T01:00Z	0.539	false
2019-01-16T00:45Z	0.538	false
2019-01-16T00:30Z	0.535	false
2019-01-16T00:15Z	0.539	false
2019-01-16T00:00Z	0.544	false
2019-01-15T23:45Z	0.542	false
2019-01-15T23:30Z	0.542	false
2019-01-15T23:15Z	0.546	false
2019-01-15T23:00Z	0.549	false
2019-01-15T22:45Z	0.549	false
2019-01-15T22:30Z	0.547	false
2019-01-15T22:15Z	0.549	false
2019-01-15T22:00Z	0.547	false
2019-01-15T21:45Z	0.549	false
2019-01-15T21:30Z	0.547	false
2019-01-15T21:15Z	0.551	false
2019-01-15T21:00Z	0.551	false
2019-01-15T20:45Z	0.551	false
2019-01-15T20:30Z	0.549	false
2019-01-15T20:15Z	0.549	false
2019-01-15T20:00Z	0.551	false
2019-01-15T19:45Z	0.552	false
2019-01-15T19:30Z	0.552	false
2019-01-15T19:15Z	0.552	false
2019-01-15T19:00Z	0.553	false
2019-01-15T18:45Z	0.552	false
2019-01-15T18:30Z	0.55	false
2019-01-15T18:15Z	0.551	false
2019-01-15T18:00Z	0.552	false
2019-01-15T17:45Z	0.556	false
2019-01-15T17:30Z	0.556	false
2019-01-15T17:15Z	0.558	false
2019-01-15T17:00Z	0.556	false
2019-01-15T16:45Z	0.559	false
2019-01-15T16:30Z	0.558	false
2019-01-15T16:15Z	0.558	false
2019-01-15T16:00Z	0.558	false
2019-01-15T15:45Z	0.559	false
2019-01-15T15:30Z	0.562	false
2019-01-15T15:15Z	0.561	false

Forecast data

January 20th 2019, 3:00:00 pm	0.490
January 20th 2019, 3:15:00 pm	0.491
January 20th 2019, 3:30:00 pm	0.492
January 20th 2019, 3:45:00 pm	0.492
January 20th 2019, 4:00:00 pm	0.493
January 20th 2019, 4:15:00 pm	0.494
January 20th 2019, 4:30:00 pm	0.494
January 20th 2019, 4:45:00 pm	0.494
January 20th 2019, 5:00:00 pm	0.494
January 20th 2019, 5:15:00 pm	0.494
January 20th 2019, 5:30:00 pm	0.493
January 20th 2019, 5:45:00 pm	0.493
January 20th 2019, 6:00:00 pm	0.493
January 20th 2019, 6:15:00 pm	0.493
January 20th 2019, 6:30:00 pm	0.493
January 20th 2019, 6:45:00 pm	0.493
January 20th 2019, 7:00:00 pm	0.493
January 20th 2019, 7:15:00 pm	0.493
January 20th 2019, 7:30:00 pm	0.493
January 20th 2019, 7:45:00 pm	0.493
January 20th 2019, 8:00:00 pm	0.493
January 20th 2019, 8:15:00 pm	0.493
January 20th 2019, 8:30:00 pm	0.493
January 20th 2019, 8:45:00 pm	0.493
January 20th 2019, 9:00:00 pm	0.493
January 20th 2019, 9:15:00 pm	0.493
January 20th 2019, 9:30:00 pm	0.492
January 20th 2019, 9:45:00 pm	0.493
January 20th 2019, 10:00:00 pm	0.492
January 20th 2019, 10:15:00 pm	0.492
January 20th 2019, 10:30:00 pm	0.492
January 20th 2019, 10:45:00 pm	0.492
January 20th 2019, 11:00:00 pm	0.492
January 20th 2019, 11:15:00 pm	0.492
January 20th 2019, 11:30:00 pm	0.492
January 20th 2019, 11:45:00 pm	0.492
January 21st 2019, 12:00:00 am	0.493
January 21st 2019, 12:15:00 am	0.493
January 21st 2019, 12:30:00 am	0.493
January 21st 2019, 12:45:00 am	0.493
January 21st 2019, 1:00:00 am	0.494
January 21st 2019, 1:15:00 am	0.494
January 21st 2019, 1:30:00 am	0.495
January 21st 2019, 1:45:00 am	0.495
January 21st 2019, 2:00:00 am	0.496
January 21st 2019, 2:15:00 am	0.497
January 21st 2019, 2:30:00 am	0.498
January 21st 2019, 2:45:00 am	0.499
January 21st 2019, 3:00:00 am	0.501
January 21st 2019, 3:15:00 am	0.501
January 21st 2019, 3:30:00 am	0.502
January 21st 2019, 3:45:00 am	0.502
January 21st 2019, 4:00:00 am	0.502
January 21st 2019, 4:15:00 am	0.501
January 21st 2019, 4:30:00 am	0.501
January 21st 2019, 4:45:00 am	0.500
January 21st 2019, 5:00:00 am	0.499
January 21st 2019, 5:15:00 am	0.499
January 21st 2019, 5:30:00 am	0.499
January 21st 2019, 5:45:00 am	0.499
January 21st 2019, 6:00:00 am	0.499
January 21st 2019, 6:15:00 am	0.499
January 21st 2019, 6:30:00 am	0.499
January 21st 2019, 6:45:00 am	0.500
January 21st 2019, 7:00:00 am	0.500
January 21st 2019, 7:15:00 am	0.500
January 21st 2019, 7:30:00 am	0.500
January 21st 2019, 7:45:00 am	0.500
January 21st 2019, 8:00:00 am	0.499
January 21st 2019, 8:15:00 am	0.499
January 21st 2019, 8:30:00 am	0.498
January 21st 2019, 8:45:00 am	0.497
January 21st 2019, 9:00:00 am	0.497
January 21st 2019, 9:15:00 am	0.496
January 21st 2019, 9:30:00 am	0.495
January 21st 2019, 9:45:00 am	0.495
January 21st 2019, 10:00:00 am	0.494
January 21st 2019, 10:15:00 am	0.494
January 21st 2019, 10:30:00 am	0.494
January 21st 2019, 10:45:00 am	0.494
January 21st 2019, 11:00:00 am	0.494
January 21st 2019, 11:15:00 am	0.494
January 21st 2019, 11:30:00 am	0.494
January 21st 2019, 11:45:00 am	0.493
January 21st 2019, 12:00:00 pm	0.493
January 21st 2019, 12:15:00 pm	0.493
January 21st 2019, 12:30:00 pm	0.493
January 21st 2019, 12:45:00 pm	0.493
January 21st 2019, 1:00:00 pm	0.493
January 21st 2019, 1:15:00 pm	0.493
January 21st 2019, 1:30:00 pm	0.493
January 21st 2019, 1:45:00 pm	0.493
January 21st 2019, 2:00:00 pm	0.493
January 21st 2019, 2:15:00 pm	0.493
January 21st 2019, 2:30:00 pm	0.493
January 21st 2019, 2:45:00 pm	0.493
January 21st 2019, 3:00:00 pm	0.493
January 21st 2019, 3:15:00 pm	0.492
January 21st 2019, 3:30:00 pm	0.492
January 21st 2019, 3:45:00 pm	0.492
January 21st 2019, 4:00:00 pm	0.492
January 21st 2019, 4:15:00 pm	0.492
January 21st 2019, 4:30:00 pm	0.492
January 21st 2019, 4:45:00 pm	0.492
January 21st 2019, 5:00:00 pm	0.492
January 21st 2019, 5:15:00 pm	0.492
January 21st 2019, 5:30:00 pm	0.492
January 21st 2019, 5:45:00 pm	0.492
January 21st 2019, 6:00:00 pm	0.492
January 21st 2019, 6:15:00 pm	0.492
January 21st 2019, 6:30:00 pm	0.492
January 21st 2019, 6:45:00 pm	0.492
January 21st 2019, 7:00:00 pm	0.492
January 21st 2019, 7:15:00 pm	0.492
January 21st 2019, 7:30:00 pm	0.491
January 21st 2019, 7:45:00 pm	0.491
January 21st 2019, 8:00:00 pm	0.491
January 21st 2019, 8:15:00 pm	0.491
January 21st 2019, 8:30:00 pm	0.491
January 21st 2019, 8:45:00 pm	0.491
January 21st 2019, 9:00:00 pm	0.491
January 21st 2019, 9:15:00 pm	0.491
January 21st 2019, 9:30:00 pm	0.491
January 21st 2019, 9:45:00 pm	0.491
January 21st 2019, 10:00:00 pm	0.491
January 21st 2019, 10:15:00 pm	0.491
January 21st 2019, 10:30:00 pm	0.491
January 21st 2019, 10:45:00 pm	0.491
January 21st 2019, 11:00:00 pm	0.492
January 21st 2019, 11:15:00 pm	0.495
January 21st 2019, 11:30:00 pm	0.502
January 21st 2019, 11:45:00 pm	0.511
January 22nd 2019, 12:00:00 am	0.521
January 22nd 2019, 12:15:00 am	0.535
January 22nd 2019, 12:30:00 am	0.549
January 22nd 2019, 12:45:00 am	0.563
January 22nd 2019, 1:00:00 am	0.575
January 22nd 2019, 1:15:00 am	0.584
January 22nd 2019, 1:30:00 am	0.590
January 22nd 2019, 1:45:00 am	0.593
January 22nd 2019, 2:00:00 am	0.593
January 22nd 2019, 2:15:00 am	0.592
January 22nd 2019, 2:30:00 am	0.593
January 22nd 2019, 2:45:00 am	0.599
January 22nd 2019, 3:00:00 am	0.625

Key information

• Station name: Whalley Weir
• Station ID: 5150
• River name: River Calder
• Typical range: 0.33m to 3.33m
• Highest level on record: 4.64m on 26 December 2015
• Site datum: 39.82mAOD (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.

How are forecasts produced?

The forecasts shown here are computer models based on technical data, local conditions and Met Office rainfall predictions and may contain uncertainty. Because they’re linked to the weather, forecasts can change quickly. We update them more frequently if the risk of flooding increases.

When we issue flood warnings and alerts we assess many factors including these forecasts, local conditions, tides and the weather forecast.

Flood warnings and alerts can still be issued even if water levels at a measuring station are forecast to remain within its typical range. For the latest information, always check for up to date flood warnings and alerts.

What effect could these levels have on nearby areas?

Typical range at this location

0.33m to 3.33m.

Above 3.33m flooding of low-lying land may occur in these areas

• River Calder

Above 3.70m some property flooding may occur in these areas

• River Calder at Whalley, around Hole House Farm and Calder Vale
• River Calder at Whalley, between Accrington Rd, Judge Walmsley Mill and Hackings Caravan Park
• River Calder at Whalley, comprising King St north of Accrington Rd

Highest forecast level at this location

The highest level forecast in the next 36 hours is 0.63m at 3:00am Tuesday 22 January 2019.

Highest level recorded at this location

4.64m on 26 December 2015

• View nearby measuring stations

• View the flood information service for England
• View your property's long term risk of flooding

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