River level Lariggan River at Penzance Alverton

Check for flood warnings in this area

Latest recorded level 0.18m at 6:00am Wednesday 27 January 2021.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 0.30m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2021-01-27T06:00Z	0.179	false
2021-01-27T05:45Z	0.181	false
2021-01-27T05:30Z	0.183	false
2021-01-27T05:15Z	0.18	false
2021-01-27T05:00Z	0.186	false
2021-01-27T04:45Z	0.182	false
2021-01-27T04:30Z	0.183	false
2021-01-27T04:15Z	0.181	false
2021-01-27T04:00Z	0.182	false
2021-01-27T03:45Z	0.187	false
2021-01-27T03:30Z	0.181	false
2021-01-27T03:15Z	0.189	false
2021-01-27T03:00Z	0.18	false
2021-01-27T02:45Z	0.181	false
2021-01-27T02:30Z	0.181	false
2021-01-27T02:15Z	0.186	false
2021-01-27T02:00Z	0.187	false
2021-01-27T01:45Z	0.187	false
2021-01-27T01:30Z	0.189	false
2021-01-27T01:15Z	0.192	false
2021-01-27T01:00Z	0.188	false
2021-01-27T00:45Z	0.19	false
2021-01-27T00:30Z	0.189	false
2021-01-27T00:15Z	0.191	false
2021-01-27T00:00Z	0.188	false
2021-01-26T23:45Z	0.193	false
2021-01-26T23:30Z	0.197	false
2021-01-26T23:15Z	0.193	false
2021-01-26T23:00Z	0.198	false
2021-01-26T22:45Z	0.188	false
2021-01-26T22:30Z	0.196	false
2021-01-26T22:15Z	0.2	false
2021-01-26T22:00Z	0.198	false
2021-01-26T21:45Z	0.208	false
2021-01-26T21:30Z	0.199	false
2021-01-26T21:15Z	0.211	false
2021-01-26T21:00Z	0.212	false
2021-01-26T20:45Z	0.208	false
2021-01-26T20:30Z	0.216	false
2021-01-26T20:15Z	0.22	false
2021-01-26T20:00Z	0.22	false
2021-01-26T19:45Z	0.221	false
2021-01-26T19:30Z	0.218	false
2021-01-26T19:15Z	0.223	false
2021-01-26T19:00Z	0.222	false
2021-01-26T18:45Z	0.23	false
2021-01-26T18:30Z	0.234	false
2021-01-26T18:15Z	0.24	false
2021-01-26T18:00Z	0.236	false
2021-01-26T17:45Z	0.243	false
2021-01-26T17:30Z	0.24	false
2021-01-26T17:15Z	0.241	false
2021-01-26T17:00Z	0.245	false
2021-01-26T16:45Z	0.242	false
2021-01-26T16:30Z	0.251	false
2021-01-26T16:15Z	0.246	false
2021-01-26T16:00Z	0.237	false
2021-01-26T15:45Z	0.244	false
2021-01-26T15:30Z	0.225	false
2021-01-26T15:15Z	0.222	false
2021-01-26T15:00Z	0.23	false
2021-01-26T14:45Z	0.233	false
2021-01-26T14:30Z	0.235	false
2021-01-26T14:15Z	0.232	false
2021-01-26T14:00Z	0.24	false
2021-01-26T13:45Z	0.237	false
2021-01-26T13:30Z	0.239	false
2021-01-26T13:15Z	0.24	false
2021-01-26T13:00Z	0.236	false
2021-01-26T12:45Z	0.245	false
2021-01-26T12:30Z	0.238	false
2021-01-26T12:15Z	0.244	false
2021-01-26T12:00Z	0.243	false
2021-01-26T11:45Z	0.251	false
2021-01-26T11:30Z	0.251	false
2021-01-26T11:15Z	0.254	false
2021-01-26T11:00Z	0.255	false
2021-01-26T10:45Z	0.257	false
2021-01-26T10:30Z	0.264	false
2021-01-26T10:15Z	0.273	false
2021-01-26T10:00Z	0.273	false
2021-01-26T09:45Z	0.281	false
2021-01-26T09:30Z	0.288	false
2021-01-26T09:15Z	0.294	false
2021-01-26T09:00Z	0.308	false
2021-01-26T08:45Z	0.306	false
2021-01-26T08:30Z	0.299	false
2021-01-26T08:15Z	0.297	false
2021-01-26T08:00Z	0.283	false
2021-01-26T07:45Z	0.257	false
2021-01-26T07:30Z	0.24	false
2021-01-26T07:15Z	0.22	false
2021-01-26T07:00Z	0.204	false
2021-01-26T06:45Z	0.182	false
2021-01-26T06:30Z	0.168	false
2021-01-26T06:15Z	0.169	false
2021-01-26T06:00Z	0.161	false
2021-01-26T05:45Z	0.158	false
2021-01-26T05:30Z	0.16	false
2021-01-26T05:15Z	0.16	false
2021-01-26T05:00Z	0.159	false
2021-01-26T04:45Z	0.157	false
2021-01-26T04:30Z	0.158	false
2021-01-26T04:15Z	0.158	false
2021-01-26T04:00Z	0.157	false
2021-01-26T03:45Z	0.159	false
2021-01-26T03:30Z	0.158	false
2021-01-26T03:15Z	0.158	false
2021-01-26T03:00Z	0.16	false
2021-01-26T02:45Z	0.16	false
2021-01-26T02:30Z	0.159	false
2021-01-26T02:15Z	0.16	false
2021-01-26T02:00Z	0.158	false
2021-01-26T01:45Z	0.156	false
2021-01-26T01:30Z	0.161	false
2021-01-26T01:15Z	0.158	false
2021-01-26T01:00Z	0.156	false
2021-01-26T00:45Z	0.16	false
2021-01-26T00:30Z	0.158	false
2021-01-26T00:15Z	0.16	false
2021-01-26T00:00Z	0.159	false
2021-01-25T23:45Z	0.156	false
2021-01-25T23:30Z	0.159	false
2021-01-25T23:15Z	0.157	false
2021-01-25T23:00Z	0.157	false
2021-01-25T22:45Z	0.16	false
2021-01-25T22:30Z	0.159	false
2021-01-25T22:15Z	0.16	false
2021-01-25T22:00Z	0.158	false
2021-01-25T21:45Z	0.159	false
2021-01-25T21:30Z	0.158	false
2021-01-25T21:15Z	0.157	false
2021-01-25T21:00Z	0.158	false
2021-01-25T20:45Z	0.161	false
2021-01-25T20:30Z	0.158	false
2021-01-25T20:15Z	0.158	false
2021-01-25T20:00Z	0.159	false
2021-01-25T19:45Z	0.16	false
2021-01-25T19:30Z	0.162	false
2021-01-25T19:15Z	0.161	false
2021-01-25T19:00Z	0.159	false
2021-01-25T18:45Z	0.16	false
2021-01-25T18:30Z	0.158	false
2021-01-25T18:15Z	0.159	false
2021-01-25T18:00Z	0.16	false
2021-01-25T17:45Z	0.159	false
2021-01-25T17:30Z	0.16	false
2021-01-25T17:15Z	0.155	false
2021-01-25T17:00Z	0.161	false
2021-01-25T16:45Z	0.159	false
2021-01-25T16:30Z	0.159	false
2021-01-25T16:15Z	0.159	false
2021-01-25T16:00Z	0.161	false
2021-01-25T15:45Z	0.159	false
2021-01-25T15:30Z	0.158	false
2021-01-25T15:15Z	0.159	false
2021-01-25T15:00Z	0.159	false
2021-01-25T14:45Z	0.159	false
2021-01-25T14:30Z	0.159	false
2021-01-25T14:15Z	0.161	false
2021-01-25T14:00Z	0.161	false
2021-01-25T13:45Z	0.159	false
2021-01-25T13:30Z	0.158	false
2021-01-25T13:15Z	0.159	false
2021-01-25T13:00Z	0.159	false
2021-01-25T12:45Z	0.161	false
2021-01-25T12:30Z	0.16	false
2021-01-25T12:15Z	0.159	false
2021-01-25T12:00Z	0.16	false
2021-01-25T11:45Z	0.16	false
2021-01-25T11:30Z	0.159	false
2021-01-25T11:15Z	0.162	false
2021-01-25T11:00Z	0.159	false
2021-01-25T10:45Z	0.161	false
2021-01-25T10:30Z	0.158	false
2021-01-25T10:15Z	0.159	false
2021-01-25T10:00Z	0.16	false
2021-01-25T09:45Z	0.16	false
2021-01-25T09:30Z	0.161	false
2021-01-25T09:15Z	0.159	false
2021-01-25T09:00Z	0.161	false
2021-01-25T08:45Z	0.161	false
2021-01-25T08:30Z	0.162	false
2021-01-25T08:15Z	0.161	false
2021-01-25T08:00Z	0.161	false
2021-01-25T07:45Z	0.163	false
2021-01-25T07:30Z	0.161	false
2021-01-25T07:15Z	0.161	false
2021-01-25T07:00Z	0.164	false
2021-01-25T06:45Z	0.162	false
2021-01-25T06:30Z	0.162	false
2021-01-25T06:15Z	0.161	false
2021-01-25T06:00Z	0.163	false
2021-01-25T05:45Z	0.162	false
2021-01-25T05:30Z	0.161	false
2021-01-25T05:15Z	0.163	false
2021-01-25T05:00Z	0.165	false
2021-01-25T04:45Z	0.159	false
2021-01-25T04:30Z	0.157	false
2021-01-25T04:15Z	0.16	false
2021-01-25T04:00Z	0.166	false
2021-01-25T03:45Z	0.166	false
2021-01-25T03:30Z	0.163	false
2021-01-25T03:15Z	0.162	false
2021-01-25T03:00Z	0.164	false
2021-01-25T02:45Z	0.164	false
2021-01-25T02:30Z	0.164	false
2021-01-25T02:15Z	0.166	false
2021-01-25T02:00Z	0.164	false
2021-01-25T01:45Z	0.165	false
2021-01-25T01:30Z	0.164	false
2021-01-25T01:15Z	0.164	false
2021-01-25T01:00Z	0.165	false
2021-01-25T00:45Z	0.164	false
2021-01-25T00:30Z	0.167	false
2021-01-25T00:15Z	0.166	false
2021-01-25T00:00Z	0.165	false
2021-01-24T23:45Z	0.166	false
2021-01-24T23:30Z	0.164	false
2021-01-24T23:15Z	0.165	false
2021-01-24T23:00Z	0.163	false
2021-01-24T22:45Z	0.164	false
2021-01-24T22:30Z	0.164	false
2021-01-24T22:15Z	0.164	false
2021-01-24T22:00Z	0.165	false
2021-01-24T21:45Z	0.164	false
2021-01-24T21:30Z	0.166	false
2021-01-24T21:15Z	0.166	false
2021-01-24T21:00Z	0.164	false
2021-01-24T20:45Z	0.164	false
2021-01-24T20:30Z	0.165	false
2021-01-24T20:15Z	0.165	false
2021-01-24T20:00Z	0.166	false
2021-01-24T19:45Z	0.165	false
2021-01-24T19:30Z	0.166	false
2021-01-24T19:15Z	0.168	false
2021-01-24T19:00Z	0.168	false
2021-01-24T18:45Z	0.164	false
2021-01-24T18:30Z	0.166	false
2021-01-24T18:15Z	0.166	false
2021-01-24T18:00Z	0.166	false
2021-01-24T17:45Z	0.166	false
2021-01-24T17:30Z	0.164	false
2021-01-24T17:15Z	0.168	false
2021-01-24T17:00Z	0.167	false
2021-01-24T16:45Z	0.169	false
2021-01-24T16:30Z	0.169	false
2021-01-24T16:15Z	0.17	false
2021-01-24T16:00Z	0.167	false
2021-01-24T15:45Z	0.166	false
2021-01-24T15:30Z	0.168	false
2021-01-24T15:15Z	0.169	false
2021-01-24T15:00Z	0.168	false
2021-01-24T14:45Z	0.165	false
2021-01-24T14:30Z	0.17	false
2021-01-24T14:15Z	0.17	false
2021-01-24T14:00Z	0.171	false
2021-01-24T13:45Z	0.167	false
2021-01-24T13:30Z	0.171	false
2021-01-24T13:15Z	0.173	false
2021-01-24T13:00Z	0.17	false
2021-01-24T12:45Z	0.171	false
2021-01-24T12:30Z	0.172	false
2021-01-24T12:15Z	0.171	false
2021-01-24T12:00Z	0.171	false
2021-01-24T11:45Z	0.17	false
2021-01-24T11:30Z	0.173	false
2021-01-24T11:15Z	0.174	false
2021-01-24T11:00Z	0.168	false
2021-01-24T10:45Z	0.175	false
2021-01-24T10:30Z	0.174	false
2021-01-24T10:15Z	0.173	false
2021-01-24T10:00Z	0.173	false
2021-01-24T09:45Z	0.174	false
2021-01-24T09:30Z	0.171	false
2021-01-24T09:15Z	0.176	false
2021-01-24T09:00Z	0.178	false
2021-01-24T08:45Z	0.177	false
2021-01-24T08:30Z	0.175	false
2021-01-24T08:15Z	0.177	false
2021-01-24T08:00Z	0.178	false
2021-01-24T07:45Z	0.173	false
2021-01-24T07:30Z	0.176	false
2021-01-24T07:15Z	0.178	false
2021-01-24T07:00Z	0.176	false
2021-01-24T06:45Z	0.174	false
2021-01-24T06:30Z	0.173	false
2021-01-24T06:15Z	0.178	false
2021-01-24T06:00Z	0.178	false
2021-01-24T05:45Z	0.181	false
2021-01-24T05:30Z	0.173	false
2021-01-24T05:15Z	0.176	false
2021-01-24T05:00Z	0.177	false
2021-01-24T04:45Z	0.178	false
2021-01-24T04:30Z	0.179	false
2021-01-24T04:15Z	0.178	false
2021-01-24T04:00Z	0.179	false
2021-01-24T03:45Z	0.175	false
2021-01-24T03:30Z	0.176	false
2021-01-24T03:15Z	0.172	false
2021-01-24T03:00Z	0.177	false
2021-01-24T02:45Z	0.181	false
2021-01-24T02:30Z	0.178	false
2021-01-24T02:15Z	0.182	false
2021-01-24T02:00Z	0.18	false
2021-01-24T01:45Z	0.176	false
2021-01-24T01:30Z	0.179	false
2021-01-24T01:15Z	0.183	false
2021-01-24T01:00Z	0.167	false
2021-01-24T00:45Z	0.17	false
2021-01-24T00:30Z	0.174	false
2021-01-24T00:15Z	0.171	false
2021-01-24T00:00Z	0.171	false
2021-01-23T23:45Z	0.162	false
2021-01-23T23:30Z	0.161	false
2021-01-23T23:15Z	0.161	false
2021-01-23T23:00Z	0.163	false
2021-01-23T22:45Z	0.162	false
2021-01-23T22:30Z	0.162	false
2021-01-23T22:15Z	0.159	false
2021-01-23T22:00Z	0.159	false
2021-01-23T21:45Z	0.161	false
2021-01-23T21:30Z	0.161	false
2021-01-23T21:15Z	0.162	false
2021-01-23T21:00Z	0.161	false
2021-01-23T20:45Z	0.162	false
2021-01-23T20:30Z	0.163	false
2021-01-23T20:15Z	0.164	false
2021-01-23T20:00Z	0.161	false
2021-01-23T19:45Z	0.161	false
2021-01-23T19:30Z	0.167	false
2021-01-23T19:15Z	0.161	false
2021-01-23T19:00Z	0.162	false
2021-01-23T18:45Z	0.163	false
2021-01-23T18:30Z	0.164	false
2021-01-23T18:15Z	0.16	false
2021-01-23T18:00Z	0.161	false
2021-01-23T17:45Z	0.161	false
2021-01-23T17:30Z	0.165	false
2021-01-23T17:15Z	0.165	false
2021-01-23T17:00Z	0.162	false
2021-01-23T16:45Z	0.161	false
2021-01-23T16:30Z	0.163	false
2021-01-23T16:15Z	0.163	false
2021-01-23T16:00Z	0.161	false
2021-01-23T15:45Z	0.162	false
2021-01-23T15:30Z	0.162	false
2021-01-23T15:15Z	0.164	false
2021-01-23T15:00Z	0.162	false
2021-01-23T14:45Z	0.159	false
2021-01-23T14:30Z	0.163	false
2021-01-23T14:15Z	0.161	false
2021-01-23T14:00Z	0.161	false
2021-01-23T13:45Z	0.163	false
2021-01-23T13:30Z	0.166	false
2021-01-23T13:15Z	0.164	false
2021-01-23T13:00Z	0.162	false
2021-01-23T12:45Z	0.164	false
2021-01-23T12:30Z	0.161	false
2021-01-23T12:15Z	0.162	false
2021-01-23T12:00Z	0.163	false
2021-01-23T11:45Z	0.164	false
2021-01-23T11:30Z	0.162	false
2021-01-23T11:15Z	0.163	false
2021-01-23T11:00Z	0.163	false
2021-01-23T10:45Z	0.164	false
2021-01-23T10:30Z	0.165	false
2021-01-23T10:15Z	0.165	false
2021-01-23T10:00Z	0.163	false
2021-01-23T09:45Z	0.165	false
2021-01-23T09:30Z	0.164	false
2021-01-23T09:15Z	0.167	false
2021-01-23T09:00Z	0.165	false
2021-01-23T08:45Z	0.166	false
2021-01-23T08:30Z	0.164	false
2021-01-23T08:15Z	0.164	false
2021-01-23T08:00Z	0.165	false
2021-01-23T07:45Z	0.164	false
2021-01-23T07:30Z	0.163	false
2021-01-23T07:15Z	0.165	false
2021-01-23T07:00Z	0.163	false
2021-01-23T06:45Z	0.166	false
2021-01-23T06:30Z	0.168	false
2021-01-23T06:15Z	0.164	false
2021-01-23T06:00Z	0.164	false
2021-01-23T05:45Z	0.166	false
2021-01-23T05:30Z	0.167	false
2021-01-23T05:15Z	0.167	false
2021-01-23T05:00Z	0.166	false
2021-01-23T04:45Z	0.164	false
2021-01-23T04:30Z	0.163	false
2021-01-23T04:15Z	0.165	false
2021-01-23T04:00Z	0.165	false
2021-01-23T03:45Z	0.165	false
2021-01-23T03:30Z	0.167	false
2021-01-23T03:15Z	0.167	false
2021-01-23T03:00Z	0.165	false
2021-01-23T02:45Z	0.166	false
2021-01-23T02:30Z	0.167	false
2021-01-23T02:15Z	0.167	false
2021-01-23T02:00Z	0.165	false
2021-01-23T01:45Z	0.168	false
2021-01-23T01:30Z	0.166	false
2021-01-23T01:15Z	0.164	false
2021-01-23T01:00Z	0.166	false
2021-01-23T00:45Z	0.164	false
2021-01-23T00:30Z	0.168	false
2021-01-23T00:15Z	0.165	false
2021-01-23T00:00Z	0.165	false
2021-01-22T23:45Z	0.168	false
2021-01-22T23:30Z	0.166	false
2021-01-22T23:15Z	0.166	false
2021-01-22T23:00Z	0.168	false
2021-01-22T22:45Z	0.17	false
2021-01-22T22:30Z	0.165	false
2021-01-22T22:15Z	0.167	false
2021-01-22T22:00Z	0.17	false
2021-01-22T21:45Z	0.166	false
2021-01-22T21:30Z	0.164	false
2021-01-22T21:15Z	0.167	false
2021-01-22T21:00Z	0.163	false
2021-01-22T20:45Z	0.165	false
2021-01-22T20:30Z	0.167	false
2021-01-22T20:15Z	0.167	false
2021-01-22T20:00Z	0.167	false
2021-01-22T19:45Z	0.169	false
2021-01-22T19:30Z	0.165	false
2021-01-22T19:15Z	0.163	false
2021-01-22T19:00Z	0.169	false
2021-01-22T18:45Z	0.166	false
2021-01-22T18:30Z	0.164	false
2021-01-22T18:15Z	0.164	false
2021-01-22T18:00Z	0.164	false
2021-01-22T17:45Z	0.165	false
2021-01-22T17:30Z	0.169	false
2021-01-22T17:15Z	0.166	false
2021-01-22T17:00Z	0.167	false
2021-01-22T16:45Z	0.166	false
2021-01-22T16:30Z	0.165	false
2021-01-22T16:15Z	0.168	false
2021-01-22T16:00Z	0.167	false
2021-01-22T15:45Z	0.166	false
2021-01-22T15:30Z	0.169	false
2021-01-22T15:15Z	0.168	false
2021-01-22T15:00Z	0.167	false
2021-01-22T14:45Z	0.168	false
2021-01-22T14:30Z	0.166	false
2021-01-22T14:15Z	0.167	false
2021-01-22T14:00Z	0.169	false
2021-01-22T13:45Z	0.17	false
2021-01-22T13:30Z	0.167	false
2021-01-22T13:15Z	0.165	false
2021-01-22T13:00Z	0.167	false
2021-01-22T12:45Z	0.168	false
2021-01-22T12:30Z	0.164	false
2021-01-22T12:15Z	0.162	false
2021-01-22T12:00Z	0.166	false
2021-01-22T11:45Z	0.165	false
2021-01-22T11:30Z	0.165	false
2021-01-22T11:15Z	0.167	false
2021-01-22T11:00Z	0.167	false
2021-01-22T10:45Z	0.168	false
2021-01-22T10:30Z	0.165	false
2021-01-22T10:15Z	0.165	false
2021-01-22T10:00Z	0.169	false
2021-01-22T09:45Z	0.165	false
2021-01-22T09:30Z	0.164	false
2021-01-22T09:15Z	0.166	false
2021-01-22T09:00Z	0.167	false
2021-01-22T08:45Z	0.167	false
2021-01-22T08:30Z	0.167	false
2021-01-22T08:15Z	0.17	false
2021-01-22T08:00Z	0.166	false
2021-01-22T07:45Z	0.17	false
2021-01-22T07:30Z	0.164	false
2021-01-22T07:15Z	0.168	false
2021-01-22T07:00Z	0.167	false
2021-01-22T06:45Z	0.164	false
2021-01-22T06:30Z	0.166	false
2021-01-22T06:15Z	0.167	false

Forecast data

Key information

• Station name: Penzance Alverton
• Station ID: 3390
• River name: Lariggan River
• Typical range: 0.05m to 0.30m
• Highest level on record: 0.68m on 21 March 2013
• Site datum: 0.00mAOD (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.

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