River level River Tamar at Polson Bridge

Check for flood warnings in this area

Latest recorded level 0.47m at 5:00pm Monday 30 March 2020.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 3.00m 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
2020-03-30T16:00Z	0.472	false
2020-03-30T15:45Z	0.472	false
2020-03-30T15:30Z	0.472	false
2020-03-30T15:15Z	0.472	false
2020-03-30T15:00Z	0.472	false
2020-03-30T14:45Z	0.472	false
2020-03-30T14:30Z	0.472	false
2020-03-30T14:15Z	0.472	false
2020-03-30T14:00Z	0.472	false
2020-03-30T13:45Z	0.472	false
2020-03-30T13:30Z	0.472	false
2020-03-30T13:15Z	0.472	false
2020-03-30T13:00Z	0.472	false
2020-03-30T12:45Z	0.472	false
2020-03-30T12:30Z	0.472	false
2020-03-30T12:15Z	0.473	false
2020-03-30T12:00Z	0.473	false
2020-03-30T11:45Z	0.473	false
2020-03-30T11:30Z	0.473	false
2020-03-30T11:15Z	0.473	false
2020-03-30T11:00Z	0.473	false
2020-03-30T10:45Z	0.473	false
2020-03-30T10:30Z	0.473	false
2020-03-30T10:15Z	0.474	false
2020-03-30T10:00Z	0.474	false
2020-03-30T09:45Z	0.474	false
2020-03-30T09:30Z	0.474	false
2020-03-30T09:15Z	0.473	false
2020-03-30T09:00Z	0.474	false
2020-03-30T08:45Z	0.474	false
2020-03-30T08:30Z	0.474	false
2020-03-30T08:15Z	0.474	false
2020-03-30T08:00Z	0.474	false
2020-03-30T07:45Z	0.474	false
2020-03-30T07:30Z	0.474	false
2020-03-30T07:15Z	0.474	false
2020-03-30T07:00Z	0.474	false
2020-03-30T06:45Z	0.474	false
2020-03-30T06:30Z	0.474	false
2020-03-30T06:15Z	0.474	false
2020-03-30T06:00Z	0.474	false
2020-03-30T05:45Z	0.474	false
2020-03-30T05:30Z	0.474	false
2020-03-30T05:15Z	0.474	false
2020-03-30T05:00Z	0.474	false
2020-03-30T04:45Z	0.474	false
2020-03-30T04:30Z	0.474	false
2020-03-30T04:15Z	0.474	false
2020-03-30T04:00Z	0.475	false
2020-03-30T03:45Z	0.475	false
2020-03-30T03:30Z	0.475	false
2020-03-30T03:15Z	0.475	false
2020-03-30T03:00Z	0.475	false
2020-03-30T02:45Z	0.475	false
2020-03-30T02:30Z	0.475	false
2020-03-30T02:15Z	0.475	false
2020-03-30T02:00Z	0.476	false
2020-03-30T01:45Z	0.476	false
2020-03-30T01:30Z	0.476	false
2020-03-30T01:15Z	0.476	false
2020-03-30T01:00Z	0.476	false
2020-03-30T00:45Z	0.476	false
2020-03-30T00:30Z	0.476	false
2020-03-30T00:15Z	0.476	false
2020-03-30T00:00Z	0.476	false
2020-03-29T23:45Z	0.477	false
2020-03-29T23:30Z	0.477	false
2020-03-29T23:15Z	0.478	false
2020-03-29T23:00Z	0.478	false
2020-03-29T22:45Z	0.478	false
2020-03-29T22:30Z	0.478	false
2020-03-29T22:15Z	0.478	false
2020-03-29T22:00Z	0.479	false
2020-03-29T21:45Z	0.479	false
2020-03-29T21:30Z	0.479	false
2020-03-29T21:15Z	0.479	false
2020-03-29T21:00Z	0.479	false
2020-03-29T20:45Z	0.479	false
2020-03-29T20:30Z	0.48	false
2020-03-29T20:15Z	0.48	false
2020-03-29T20:00Z	0.48	false
2020-03-29T19:45Z	0.48	false
2020-03-29T19:30Z	0.48	false
2020-03-29T19:15Z	0.48	false
2020-03-29T19:00Z	0.481	false
2020-03-29T18:45Z	0.481	false
2020-03-29T18:30Z	0.481	false
2020-03-29T18:15Z	0.481	false
2020-03-29T18:00Z	0.481	false
2020-03-29T17:45Z	0.481	false
2020-03-29T17:30Z	0.482	false
2020-03-29T17:15Z	0.482	false
2020-03-29T17:00Z	0.482	false
2020-03-29T16:45Z	0.482	false
2020-03-29T16:30Z	0.483	false
2020-03-29T16:15Z	0.483	false
2020-03-29T16:00Z	0.484	false
2020-03-29T15:45Z	0.484	false
2020-03-29T15:30Z	0.484	false
2020-03-29T15:15Z	0.484	false
2020-03-29T15:00Z	0.484	false
2020-03-29T14:45Z	0.485	false
2020-03-29T14:30Z	0.485	false
2020-03-29T14:15Z	0.485	false
2020-03-29T14:00Z	0.485	false
2020-03-29T13:45Z	0.486	false
2020-03-29T13:30Z	0.486	false
2020-03-29T13:15Z	0.486	false
2020-03-29T13:00Z	0.487	false
2020-03-29T12:45Z	0.487	false
2020-03-29T12:30Z	0.487	false
2020-03-29T12:15Z	0.487	false
2020-03-29T12:00Z	0.487	false
2020-03-29T11:45Z	0.488	false
2020-03-29T11:30Z	0.488	false
2020-03-29T11:15Z	0.488	false
2020-03-29T11:00Z	0.488	false
2020-03-29T10:45Z	0.488	false
2020-03-29T10:30Z	0.488	false
2020-03-29T10:15Z	0.488	false
2020-03-29T10:00Z	0.489	false
2020-03-29T09:45Z	0.489	false
2020-03-29T09:30Z	0.489	false
2020-03-29T09:15Z	0.489	false
2020-03-29T09:00Z	0.49	false
2020-03-29T08:45Z	0.49	false
2020-03-29T08:30Z	0.49	false
2020-03-29T08:15Z	0.49	false
2020-03-29T08:00Z	0.49	false
2020-03-29T07:45Z	0.49	false
2020-03-29T07:30Z	0.49	false
2020-03-29T07:15Z	0.49	false
2020-03-29T07:00Z	0.491	false
2020-03-29T06:45Z	0.491	false
2020-03-29T06:30Z	0.491	false
2020-03-29T06:15Z	0.491	false
2020-03-29T06:00Z	0.492	false
2020-03-29T05:45Z	0.492	false
2020-03-29T05:30Z	0.492	false
2020-03-29T05:15Z	0.492	false
2020-03-29T05:00Z	0.492	false
2020-03-29T04:45Z	0.492	false
2020-03-29T04:30Z	0.493	false
2020-03-29T04:15Z	0.493	false
2020-03-29T04:00Z	0.493	false
2020-03-29T03:45Z	0.494	false
2020-03-29T03:30Z	0.494	false
2020-03-29T03:15Z	0.494	false
2020-03-29T03:00Z	0.494	false
2020-03-29T02:45Z	0.495	false
2020-03-29T02:30Z	0.495	false
2020-03-29T02:15Z	0.496	false
2020-03-29T02:00Z	0.496	false
2020-03-29T01:45Z	0.496	false
2020-03-29T01:30Z	0.496	false
2020-03-29T01:15Z	0.496	false
2020-03-29T01:00Z	0.497	false
2020-03-29T00:45Z	0.497	false
2020-03-29T00:30Z	0.497	false
2020-03-29T00:15Z	0.497	false
2020-03-29T00:00Z	0.498	false
2020-03-28T23:45Z	0.498	false
2020-03-28T23:30Z	0.499	false
2020-03-28T23:15Z	0.499	false
2020-03-28T23:00Z	0.499	false
2020-03-28T22:45Z	0.499	false
2020-03-28T22:30Z	0.499	false
2020-03-28T22:15Z	0.5	false
2020-03-28T22:00Z	0.5	false
2020-03-28T21:45Z	0.5	false
2020-03-28T21:30Z	0.501	false
2020-03-28T21:15Z	0.501	false
2020-03-28T21:00Z	0.501	false
2020-03-28T20:45Z	0.502	false
2020-03-28T20:30Z	0.502	false
2020-03-28T20:15Z	0.502	false
2020-03-28T20:00Z	0.502	false
2020-03-28T19:45Z	0.503	false
2020-03-28T19:30Z	0.503	false
2020-03-28T19:15Z	0.503	false
2020-03-28T19:00Z	0.504	false
2020-03-28T18:45Z	0.504	false
2020-03-28T18:30Z	0.504	false
2020-03-28T18:15Z	0.504	false
2020-03-28T18:00Z	0.505	false
2020-03-28T17:45Z	0.505	false
2020-03-28T17:30Z	0.505	false
2020-03-28T17:15Z	0.505	false
2020-03-28T17:00Z	0.506	false
2020-03-28T16:45Z	0.506	false
2020-03-28T16:30Z	0.507	false
2020-03-28T16:15Z	0.507	false
2020-03-28T16:00Z	0.507	false
2020-03-28T15:45Z	0.507	false
2020-03-28T15:30Z	0.507	false
2020-03-28T15:15Z	0.508	false
2020-03-28T15:00Z	0.508	false
2020-03-28T14:45Z	0.508	false
2020-03-28T14:30Z	0.508	false
2020-03-28T14:15Z	0.509	false
2020-03-28T14:00Z	0.509	false
2020-03-28T13:45Z	0.509	false
2020-03-28T13:30Z	0.51	false
2020-03-28T13:15Z	0.51	false
2020-03-28T13:00Z	0.51	false
2020-03-28T12:45Z	0.51	false
2020-03-28T12:30Z	0.51	false
2020-03-28T12:15Z	0.511	false
2020-03-28T12:00Z	0.511	false
2020-03-28T11:45Z	0.511	false
2020-03-28T11:30Z	0.511	false
2020-03-28T11:15Z	0.511	false
2020-03-28T11:00Z	0.511	false
2020-03-28T10:45Z	0.512	false
2020-03-28T10:30Z	0.512	false
2020-03-28T10:15Z	0.512	false
2020-03-28T10:00Z	0.512	false
2020-03-28T09:45Z	0.512	false
2020-03-28T09:30Z	0.513	false
2020-03-28T09:15Z	0.513	false
2020-03-28T09:00Z	0.513	false
2020-03-28T08:45Z	0.513	false
2020-03-28T08:30Z	0.514	false
2020-03-28T08:15Z	0.514	false
2020-03-28T08:00Z	0.514	false
2020-03-28T07:45Z	0.514	false
2020-03-28T07:30Z	0.514	false
2020-03-28T07:15Z	0.514	false
2020-03-28T07:00Z	0.514	false
2020-03-28T06:45Z	0.515	false
2020-03-28T06:30Z	0.515	false
2020-03-28T06:15Z	0.515	false
2020-03-28T06:00Z	0.515	false
2020-03-28T05:45Z	0.515	false
2020-03-28T05:30Z	0.516	false
2020-03-28T05:15Z	0.516	false
2020-03-28T05:00Z	0.516	false
2020-03-28T04:45Z	0.516	false
2020-03-28T04:30Z	0.516	false
2020-03-28T04:15Z	0.516	false
2020-03-28T04:00Z	0.517	false
2020-03-28T03:45Z	0.517	false
2020-03-28T03:30Z	0.517	false
2020-03-28T03:15Z	0.517	false
2020-03-28T03:00Z	0.517	false
2020-03-28T02:45Z	0.518	false
2020-03-28T02:30Z	0.518	false
2020-03-28T02:15Z	0.518	false
2020-03-28T02:00Z	0.519	false
2020-03-28T01:45Z	0.519	false
2020-03-28T01:30Z	0.519	false
2020-03-28T01:15Z	0.519	false
2020-03-28T01:00Z	0.52	false
2020-03-28T00:45Z	0.52	false
2020-03-28T00:30Z	0.52	false
2020-03-28T00:15Z	0.52	false
2020-03-28T00:00Z	0.52	false
2020-03-27T23:45Z	0.52	false
2020-03-27T23:30Z	0.521	false
2020-03-27T23:15Z	0.521	false
2020-03-27T23:00Z	0.522	false
2020-03-27T22:45Z	0.522	false
2020-03-27T22:30Z	0.522	false
2020-03-27T22:15Z	0.522	false
2020-03-27T22:00Z	0.523	false
2020-03-27T21:45Z	0.523	false
2020-03-27T21:30Z	0.523	false
2020-03-27T21:15Z	0.523	false
2020-03-27T21:00Z	0.524	false
2020-03-27T20:45Z	0.524	false
2020-03-27T20:30Z	0.524	false
2020-03-27T20:15Z	0.524	false
2020-03-27T20:00Z	0.524	false
2020-03-27T19:45Z	0.524	false
2020-03-27T19:30Z	0.524	false
2020-03-27T19:15Z	0.525	false
2020-03-27T19:00Z	0.525	false
2020-03-27T18:45Z	0.525	false
2020-03-27T18:30Z	0.525	false
2020-03-27T18:15Z	0.526	false
2020-03-27T18:00Z	0.526	false
2020-03-27T17:45Z	0.526	false
2020-03-27T17:30Z	0.526	false
2020-03-27T17:15Z	0.526	false
2020-03-27T17:00Z	0.527	false
2020-03-27T16:45Z	0.527	false
2020-03-27T16:30Z	0.527	false
2020-03-27T16:15Z	0.527	false
2020-03-27T16:00Z	0.528	false
2020-03-27T15:45Z	0.528	false
2020-03-27T15:30Z	0.528	false
2020-03-27T15:15Z	0.528	false
2020-03-27T15:00Z	0.528	false
2020-03-27T14:45Z	0.528	false
2020-03-27T14:30Z	0.528	false
2020-03-27T14:15Z	0.528	false
2020-03-27T14:00Z	0.529	false
2020-03-27T13:45Z	0.529	false
2020-03-27T13:30Z	0.529	false
2020-03-27T13:15Z	0.529	false
2020-03-27T13:00Z	0.529	false
2020-03-27T12:45Z	0.531	false
2020-03-27T12:30Z	0.531	false
2020-03-27T12:15Z	0.532	false
2020-03-27T12:00Z	0.532	false
2020-03-27T11:45Z	0.532	false
2020-03-27T11:30Z	0.532	false
2020-03-27T11:15Z	0.532	false
2020-03-27T11:00Z	0.532	false
2020-03-27T10:45Z	0.532	false
2020-03-27T10:30Z	0.533	false
2020-03-27T10:15Z	0.533	false
2020-03-27T10:00Z	0.533	false
2020-03-27T09:45Z	0.534	false
2020-03-27T09:30Z	0.534	false
2020-03-27T09:15Z	0.534	false
2020-03-27T09:00Z	0.534	false
2020-03-27T08:45Z	0.534	false
2020-03-27T08:30Z	0.534	false
2020-03-27T08:15Z	0.534	false
2020-03-27T08:00Z	0.534	false
2020-03-27T07:45Z	0.534	false
2020-03-27T07:30Z	0.535	false
2020-03-27T07:15Z	0.535	false
2020-03-27T07:00Z	0.535	false
2020-03-27T06:45Z	0.535	false
2020-03-27T06:30Z	0.535	false
2020-03-27T06:15Z	0.535	false
2020-03-27T06:00Z	0.536	false
2020-03-27T05:45Z	0.536	false
2020-03-27T05:30Z	0.536	false
2020-03-27T05:15Z	0.537	false
2020-03-27T05:00Z	0.537	false
2020-03-27T04:45Z	0.537	false
2020-03-27T04:30Z	0.537	false
2020-03-27T04:15Z	0.538	false
2020-03-27T04:00Z	0.538	false
2020-03-27T03:45Z	0.538	false
2020-03-27T03:30Z	0.538	false
2020-03-27T03:15Z	0.539	false
2020-03-27T03:00Z	0.539	false
2020-03-27T02:45Z	0.539	false
2020-03-27T02:30Z	0.539	false
2020-03-27T02:15Z	0.54	false
2020-03-27T02:00Z	0.54	false
2020-03-27T01:45Z	0.54	false
2020-03-27T01:30Z	0.54	false
2020-03-27T01:15Z	0.541	false
2020-03-27T01:00Z	0.541	false
2020-03-27T00:45Z	0.541	false
2020-03-27T00:30Z	0.541	false
2020-03-27T00:15Z	0.542	false
2020-03-27T00:00Z	0.542	false
2020-03-26T23:45Z	0.542	false
2020-03-26T23:30Z	0.543	false
2020-03-26T23:15Z	0.543	false
2020-03-26T23:00Z	0.543	false
2020-03-26T22:45Z	0.544	false
2020-03-26T22:30Z	0.544	false
2020-03-26T22:15Z	0.544	false
2020-03-26T22:00Z	0.544	false
2020-03-26T21:45Z	0.544	false
2020-03-26T21:30Z	0.544	false
2020-03-26T21:15Z	0.545	false
2020-03-26T21:00Z	0.545	false
2020-03-26T20:45Z	0.545	false
2020-03-26T20:30Z	0.546	false
2020-03-26T20:15Z	0.546	false
2020-03-26T20:00Z	0.546	false
2020-03-26T19:45Z	0.546	false
2020-03-26T19:30Z	0.546	false
2020-03-26T19:15Z	0.547	false
2020-03-26T19:00Z	0.547	false
2020-03-26T18:45Z	0.547	false
2020-03-26T18:30Z	0.547	false
2020-03-26T18:15Z	0.547	false
2020-03-26T18:00Z	0.548	false
2020-03-26T17:45Z	0.548	false
2020-03-26T17:30Z	0.548	false
2020-03-26T17:15Z	0.548	false
2020-03-26T17:00Z	0.549	false
2020-03-26T16:45Z	0.55	false
2020-03-26T16:30Z	0.55	false
2020-03-26T16:15Z	0.55	false
2020-03-26T16:00Z	0.55	false
2020-03-26T15:45Z	0.55	false
2020-03-26T15:30Z	0.551	false
2020-03-26T15:15Z	0.551	false
2020-03-26T15:00Z	0.551	false
2020-03-26T14:45Z	0.552	false
2020-03-26T14:30Z	0.552	false
2020-03-26T14:15Z	0.552	false
2020-03-26T14:00Z	0.552	false
2020-03-26T13:45Z	0.553	false
2020-03-26T13:30Z	0.553	false
2020-03-26T13:15Z	0.553	false
2020-03-26T13:00Z	0.554	false
2020-03-26T12:45Z	0.554	false
2020-03-26T12:30Z	0.554	false
2020-03-26T12:15Z	0.555	false
2020-03-26T12:00Z	0.555	false
2020-03-26T11:45Z	0.555	false
2020-03-26T11:30Z	0.555	false
2020-03-26T11:15Z	0.556	false
2020-03-26T11:00Z	0.556	false
2020-03-26T10:45Z	0.556	false
2020-03-26T10:30Z	0.557	false
2020-03-26T10:15Z	0.557	false
2020-03-26T10:00Z	0.558	false
2020-03-26T09:45Z	0.558	false
2020-03-26T09:30Z	0.558	false
2020-03-26T09:15Z	0.558	false
2020-03-26T09:00Z	0.559	false
2020-03-26T08:45Z	0.559	false
2020-03-26T08:30Z	0.559	false
2020-03-26T08:15Z	0.559	false
2020-03-26T08:00Z	0.559	false
2020-03-26T07:45Z	0.559	false
2020-03-26T07:30Z	0.56	false
2020-03-26T07:15Z	0.56	false
2020-03-26T07:00Z	0.56	false
2020-03-26T06:45Z	0.56	false
2020-03-26T06:30Z	0.561	false
2020-03-26T06:15Z	0.561	false
2020-03-26T06:00Z	0.561	false
2020-03-26T05:45Z	0.561	false
2020-03-26T05:30Z	0.562	false
2020-03-26T05:15Z	0.562	false
2020-03-26T05:00Z	0.562	false
2020-03-26T04:45Z	0.562	false
2020-03-26T04:30Z	0.562	false
2020-03-26T04:15Z	0.562	false
2020-03-26T04:00Z	0.563	false
2020-03-26T03:45Z	0.563	false
2020-03-26T03:30Z	0.563	false
2020-03-26T03:15Z	0.563	false
2020-03-26T03:00Z	0.563	false
2020-03-26T02:45Z	0.564	false
2020-03-26T02:30Z	0.564	false
2020-03-26T02:15Z	0.564	false
2020-03-26T02:00Z	0.565	false
2020-03-26T01:45Z	0.565	false
2020-03-26T01:30Z	0.565	false
2020-03-26T01:15Z	0.566	false
2020-03-26T01:00Z	0.566	false
2020-03-26T00:45Z	0.566	false
2020-03-26T00:30Z	0.567	false
2020-03-26T00:15Z	0.567	false
2020-03-26T00:00Z	0.567	false
2020-03-25T23:45Z	0.568	false
2020-03-25T23:30Z	0.568	false
2020-03-25T23:15Z	0.568	false
2020-03-25T23:00Z	0.568	false
2020-03-25T22:45Z	0.569	false
2020-03-25T22:30Z	0.569	false
2020-03-25T22:15Z	0.569	false
2020-03-25T22:00Z	0.57	false
2020-03-25T21:45Z	0.57	false
2020-03-25T21:30Z	0.571	false
2020-03-25T21:15Z	0.571	false
2020-03-25T21:00Z	0.571	false
2020-03-25T20:45Z	0.572	false
2020-03-25T20:30Z	0.572	false
2020-03-25T20:15Z	0.572	false
2020-03-25T20:00Z	0.572	false
2020-03-25T19:45Z	0.573	false
2020-03-25T19:30Z	0.573	false
2020-03-25T19:15Z	0.574	false
2020-03-25T19:00Z	0.574	false
2020-03-25T18:45Z	0.574	false
2020-03-25T18:30Z	0.574	false
2020-03-25T18:15Z	0.575	false
2020-03-25T18:00Z	0.575	false
2020-03-25T17:45Z	0.575	false
2020-03-25T17:30Z	0.575	false
2020-03-25T17:15Z	0.575	false
2020-03-25T17:00Z	0.575	false
2020-03-25T16:45Z	0.576	false
2020-03-25T16:30Z	0.576	false
2020-03-25T16:15Z	0.576	false

Forecast data

Key information

• Station name: Polson Bridge
• Station ID: 3203
• River name: River Tamar
• Typical range: 0.23m to 3.00m
• Highest level on record: 5.35m on 19 December 1999
• Site datum: 48.10mAOD (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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