River level River Ash at Mardock

Check for flood warnings in this area

Latest recorded level 0.22m at 11:00pm Monday 17 May 2021.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 0.80m here, minor flooding is possible in this area
• Highest recorded level. Hide
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Observed data

DateTime	Value	Error
2021-05-17T22:00Z	0.221	false
2021-05-17T21:45Z	0.221	false
2021-05-17T21:30Z	0.219	false
2021-05-17T21:15Z	0.219	false
2021-05-17T21:00Z	0.217	false
2021-05-17T20:45Z	0.215	false
2021-05-17T20:30Z	0.213	false
2021-05-17T20:15Z	0.213	false
2021-05-17T20:00Z	0.213	false
2021-05-17T19:45Z	0.213	false
2021-05-17T19:30Z	0.213	false
2021-05-17T19:15Z	0.215	false
2021-05-17T19:00Z	0.215	false
2021-05-17T18:45Z	0.215	false
2021-05-17T18:30Z	0.215	false
2021-05-17T18:15Z	0.215	false
2021-05-17T18:00Z	0.217	false
2021-05-17T17:45Z	0.217	false
2021-05-17T17:30Z	0.217	false
2021-05-17T17:15Z	0.219	false
2021-05-17T17:00Z	0.219	false
2021-05-17T16:45Z	0.219	false
2021-05-17T16:30Z	0.219	false
2021-05-17T16:15Z	0.219	false
2021-05-17T16:00Z	0.221	false
2021-05-17T15:45Z	0.221	false
2021-05-17T15:30Z	0.221	false
2021-05-17T15:15Z	0.223	false
2021-05-17T15:00Z	0.223	false
2021-05-17T14:45Z	0.225	false
2021-05-17T14:30Z	0.225	false
2021-05-17T14:15Z	0.227	false
2021-05-17T14:00Z	0.227	false
2021-05-17T13:45Z	0.229	false
2021-05-17T13:30Z	0.229	false
2021-05-17T13:15Z	0.231	false
2021-05-17T13:00Z	0.233	false
2021-05-17T12:45Z	0.235	false
2021-05-17T12:30Z	0.235	false
2021-05-17T12:15Z	0.237	false
2021-05-17T12:00Z	0.239	false
2021-05-17T11:45Z	0.241	false
2021-05-17T11:30Z	0.243	false
2021-05-17T11:15Z	0.245	false
2021-05-17T11:00Z	0.247	false
2021-05-17T10:45Z	0.249	false
2021-05-17T10:30Z	0.251	false
2021-05-17T10:15Z	0.253	false
2021-05-17T10:00Z	0.255	false
2021-05-17T09:45Z	0.257	false
2021-05-17T09:30Z	0.259	false
2021-05-17T09:15Z	0.263	false
2021-05-17T09:00Z	0.265	false
2021-05-17T08:45Z	0.267	false
2021-05-17T08:30Z	0.271	false
2021-05-17T08:15Z	0.273	false
2021-05-17T08:00Z	0.275	false
2021-05-17T07:45Z	0.279	false
2021-05-17T07:30Z	0.281	false
2021-05-17T07:15Z	0.285	false
2021-05-17T07:00Z	0.289	false
2021-05-17T06:45Z	0.293	false
2021-05-17T06:30Z	0.295	false
2021-05-17T06:15Z	0.299	false
2021-05-17T06:00Z	0.301	false
2021-05-17T05:45Z	0.303	false
2021-05-17T05:30Z	0.305	false
2021-05-17T05:15Z	0.305	false
2021-05-17T05:00Z	0.303	false
2021-05-17T04:45Z	0.301	false
2021-05-17T04:30Z	0.295	false
2021-05-17T04:15Z	0.289	false
2021-05-17T04:00Z	0.277	false
2021-05-17T03:45Z	0.263	false
2021-05-17T03:30Z	0.245	false
2021-05-17T03:15Z	0.233	false
2021-05-17T03:00Z	0.227	false
2021-05-17T02:45Z	0.221	false
2021-05-17T02:30Z	0.217	false
2021-05-17T02:15Z	0.215	false
2021-05-17T02:00Z	0.211	false
2021-05-17T01:45Z	0.207	false
2021-05-17T01:30Z	0.205	false
2021-05-17T01:15Z	0.201	false
2021-05-17T01:00Z	0.199	false
2021-05-17T00:45Z	0.195	false
2021-05-17T00:30Z	0.193	false
2021-05-17T00:15Z	0.191	false
2021-05-17T00:00Z	0.189	false
2021-05-16T23:45Z	0.185	false
2021-05-16T23:30Z	0.185	false
2021-05-16T23:15Z	0.183	false
2021-05-16T23:00Z	0.181	false
2021-05-16T22:45Z	0.179	false
2021-05-16T22:30Z	0.177	false
2021-05-16T22:15Z	0.177	false
2021-05-16T22:00Z	0.175	false
2021-05-16T21:45Z	0.175	false
2021-05-16T21:30Z	0.173	false
2021-05-16T21:15Z	0.173	false
2021-05-16T21:00Z	0.171	false
2021-05-16T20:45Z	0.171	false
2021-05-16T20:30Z	0.169	false
2021-05-16T20:15Z	0.169	false
2021-05-16T20:00Z	0.169	false
2021-05-16T19:45Z	0.169	false
2021-05-16T19:30Z	0.169	false
2021-05-16T19:15Z	0.167	false
2021-05-16T19:00Z	0.167	false
2021-05-16T18:45Z	0.167	false
2021-05-16T18:30Z	0.167	false
2021-05-16T18:15Z	0.169	false
2021-05-16T18:00Z	0.169	false
2021-05-16T17:45Z	0.169	false
2021-05-16T17:30Z	0.169	false
2021-05-16T17:15Z	0.169	false
2021-05-16T17:00Z	0.169	false
2021-05-16T16:45Z	0.169	false
2021-05-16T16:30Z	0.169	false
2021-05-16T16:15Z	0.169	false
2021-05-16T16:00Z	0.169	false
2021-05-16T15:45Z	0.169	false
2021-05-16T15:30Z	0.169	false
2021-05-16T15:15Z	0.169	false
2021-05-16T15:00Z	0.169	false
2021-05-16T14:45Z	0.169	false
2021-05-16T14:30Z	0.167	false
2021-05-16T14:15Z	0.167	false
2021-05-16T14:00Z	0.167	false
2021-05-16T13:45Z	0.167	false
2021-05-16T13:30Z	0.167	false
2021-05-16T13:15Z	0.167	false
2021-05-16T13:00Z	0.167	false
2021-05-16T12:45Z	0.167	false
2021-05-16T12:30Z	0.167	false
2021-05-16T12:15Z	0.167	false
2021-05-16T12:00Z	0.167	false
2021-05-16T11:45Z	0.167	false
2021-05-16T11:30Z	0.167	false
2021-05-16T11:15Z	0.167	false
2021-05-16T11:00Z	0.167	false
2021-05-16T10:45Z	0.167	false
2021-05-16T10:30Z	0.165	false
2021-05-16T10:15Z	0.165	false
2021-05-16T10:00Z	0.165	false
2021-05-16T09:45Z	0.165	false
2021-05-16T09:30Z	0.165	false
2021-05-16T09:15Z	0.165	false
2021-05-16T09:00Z	0.165	false
2021-05-16T08:45Z	0.165	false
2021-05-16T08:30Z	0.165	false
2021-05-16T08:15Z	0.165	false
2021-05-16T08:00Z	0.165	false
2021-05-16T07:45Z	0.165	false
2021-05-16T07:30Z	0.165	false
2021-05-16T07:15Z	0.165	false
2021-05-16T07:00Z	0.165	false
2021-05-16T06:45Z	0.165	false
2021-05-16T06:30Z	0.165	false
2021-05-16T06:15Z	0.165	false
2021-05-16T06:00Z	0.167	false
2021-05-16T05:45Z	0.167	false
2021-05-16T05:30Z	0.167	false
2021-05-16T05:15Z	0.167	false
2021-05-16T05:00Z	0.167	false
2021-05-16T04:45Z	0.167	false
2021-05-16T04:30Z	0.167	false
2021-05-16T04:15Z	0.167	false
2021-05-16T04:00Z	0.169	false
2021-05-16T03:45Z	0.169	false
2021-05-16T03:30Z	0.169	false
2021-05-16T03:15Z	0.169	false
2021-05-16T03:00Z	0.169	false
2021-05-16T02:45Z	0.169	false
2021-05-16T02:30Z	0.169	false
2021-05-16T02:15Z	0.171	false
2021-05-16T02:00Z	0.171	false
2021-05-16T01:45Z	0.171	false
2021-05-16T01:30Z	0.171	false
2021-05-16T01:15Z	0.171	false
2021-05-16T01:00Z	0.171	false
2021-05-16T00:45Z	0.171	false
2021-05-16T00:30Z	0.171	false
2021-05-16T00:15Z	0.171	false
2021-05-16T00:00Z	0.169	false
2021-05-15T23:45Z	0.169	false
2021-05-15T23:30Z	0.169	false
2021-05-15T23:15Z	0.169	false
2021-05-15T23:00Z	0.169	false
2021-05-15T22:45Z	0.169	false
2021-05-15T22:30Z	0.167	false
2021-05-15T22:15Z	0.167	false
2021-05-15T22:00Z	0.167	false
2021-05-15T21:45Z	0.167	false
2021-05-15T21:30Z	0.167	false
2021-05-15T21:15Z	0.167	false
2021-05-15T21:00Z	0.167	false
2021-05-15T20:45Z	0.167	false
2021-05-15T20:30Z	0.167	false
2021-05-15T20:15Z	0.167	false
2021-05-15T20:00Z	0.167	false
2021-05-15T19:45Z	0.167	false
2021-05-15T19:30Z	0.167	false
2021-05-15T19:15Z	0.167	false
2021-05-15T19:00Z	0.167	false
2021-05-15T18:45Z	0.167	false
2021-05-15T18:30Z	0.167	false
2021-05-15T18:15Z	0.167	false
2021-05-15T18:00Z	0.167	false
2021-05-15T17:45Z	0.167	false
2021-05-15T17:30Z	0.167	false
2021-05-15T17:15Z	0.167	false
2021-05-15T17:00Z	0.167	false
2021-05-15T16:45Z	0.167	false
2021-05-15T16:30Z	0.167	false
2021-05-15T16:15Z	0.167	false
2021-05-15T16:00Z	0.167	false
2021-05-15T15:45Z	0.167	false
2021-05-15T15:30Z	0.167	false
2021-05-15T15:15Z	0.167	false
2021-05-15T15:00Z	0.167	false
2021-05-15T14:45Z	0.167	false
2021-05-15T14:30Z	0.167	false
2021-05-15T14:15Z	0.167	false
2021-05-15T14:00Z	0.167	false
2021-05-15T13:45Z	0.167	false
2021-05-15T13:30Z	0.167	false
2021-05-15T13:15Z	0.167	false
2021-05-15T13:00Z	0.167	false
2021-05-15T12:45Z	0.167	false
2021-05-15T12:30Z	0.165	false
2021-05-15T12:15Z	0.165	false
2021-05-15T12:00Z	0.165	false
2021-05-15T11:45Z	0.165	false
2021-05-15T11:30Z	0.165	false
2021-05-15T11:15Z	0.165	false
2021-05-15T11:00Z	0.165	false
2021-05-15T10:45Z	0.165	false
2021-05-15T10:30Z	0.165	false
2021-05-15T10:15Z	0.165	false
2021-05-15T10:00Z	0.165	false
2021-05-15T09:45Z	0.165	false
2021-05-15T09:30Z	0.165	false
2021-05-15T09:15Z	0.165	false
2021-05-15T09:00Z	0.165	false
2021-05-15T08:45Z	0.165	false
2021-05-15T08:30Z	0.165	false
2021-05-15T08:15Z	0.165	false
2021-05-15T08:00Z	0.165	false
2021-05-15T07:45Z	0.165	false
2021-05-15T07:30Z	0.165	false
2021-05-15T07:15Z	0.165	false
2021-05-15T07:00Z	0.165	false
2021-05-15T06:45Z	0.165	false
2021-05-15T06:30Z	0.165	false
2021-05-15T06:15Z	0.165	false
2021-05-15T06:00Z	0.165	false
2021-05-15T05:45Z	0.165	false
2021-05-15T05:30Z	0.165	false
2021-05-15T05:15Z	0.165	false
2021-05-15T05:00Z	0.165	false
2021-05-15T04:45Z	0.165	false
2021-05-15T04:30Z	0.165	false
2021-05-15T04:15Z	0.165	false
2021-05-15T04:00Z	0.165	false
2021-05-15T03:45Z	0.165	false
2021-05-15T03:30Z	0.165	false
2021-05-15T03:15Z	0.165	false
2021-05-15T03:00Z	0.165	false
2021-05-15T02:45Z	0.165	false
2021-05-15T02:30Z	0.165	false
2021-05-15T02:15Z	0.165	false
2021-05-15T02:00Z	0.165	false
2021-05-15T01:45Z	0.165	false
2021-05-15T01:30Z	0.165	false
2021-05-15T01:15Z	0.165	false
2021-05-15T01:00Z	0.167	false
2021-05-15T00:45Z	0.167	false
2021-05-15T00:30Z	0.167	false
2021-05-15T00:15Z	0.167	false
2021-05-15T00:00Z	0.167	false
2021-05-14T23:45Z	0.167	false
2021-05-14T23:30Z	0.167	false
2021-05-14T23:15Z	0.167	false
2021-05-14T23:00Z	0.167	false
2021-05-14T22:45Z	0.167	false
2021-05-14T22:30Z	0.167	false
2021-05-14T22:15Z	0.167	false
2021-05-14T22:00Z	0.167	false
2021-05-14T21:45Z	0.167	false
2021-05-14T21:30Z	0.167	false
2021-05-14T21:15Z	0.167	false
2021-05-14T21:00Z	0.167	false
2021-05-14T20:45Z	0.167	false
2021-05-14T20:30Z	0.167	false
2021-05-14T20:15Z	0.167	false
2021-05-14T20:00Z	0.167	false
2021-05-14T19:45Z	0.167	false
2021-05-14T19:30Z	0.167	false
2021-05-14T19:15Z	0.169	false
2021-05-14T19:00Z	0.169	false
2021-05-14T18:45Z	0.169	false
2021-05-14T18:30Z	0.169	false
2021-05-14T18:15Z	0.169	false
2021-05-14T18:00Z	0.169	false
2021-05-14T17:45Z	0.169	false
2021-05-14T17:30Z	0.171	false
2021-05-14T17:15Z	0.171	false
2021-05-14T17:00Z	0.171	false
2021-05-14T16:45Z	0.171	false
2021-05-14T16:30Z	0.171	false
2021-05-14T16:15Z	0.171	false
2021-05-14T16:00Z	0.173	false
2021-05-14T15:45Z	0.173	false
2021-05-14T15:30Z	0.173	false
2021-05-14T15:15Z	0.173	false
2021-05-14T15:00Z	0.175	false
2021-05-14T14:45Z	0.175	false
2021-05-14T14:30Z	0.175	false
2021-05-14T14:15Z	0.177	false
2021-05-14T14:00Z	0.177	false
2021-05-14T13:45Z	0.177	false
2021-05-14T13:30Z	0.177	false
2021-05-14T13:15Z	0.177	false
2021-05-14T13:00Z	0.179	false
2021-05-14T12:45Z	0.179	false
2021-05-14T12:30Z	0.179	false
2021-05-14T12:15Z	0.179	false
2021-05-14T12:00Z	0.179	false
2021-05-14T11:45Z	0.179	false
2021-05-14T11:30Z	0.179	false
2021-05-14T11:15Z	0.179	false
2021-05-14T11:00Z	0.181	false
2021-05-14T10:45Z	0.181	false
2021-05-14T10:30Z	0.181	false
2021-05-14T10:15Z	0.181	false
2021-05-14T10:00Z	0.181	false
2021-05-14T09:45Z	0.183	false
2021-05-14T09:30Z	0.183	false
2021-05-14T09:15Z	0.183	false
2021-05-14T09:00Z	0.183	false
2021-05-14T08:45Z	0.183	false
2021-05-14T08:30Z	0.185	false
2021-05-14T08:15Z	0.185	false
2021-05-14T08:00Z	0.185	false
2021-05-14T07:45Z	0.185	false
2021-05-14T07:30Z	0.185	false
2021-05-14T07:15Z	0.185	false
2021-05-14T07:00Z	0.185	false
2021-05-14T06:45Z	0.185	false
2021-05-14T06:30Z	0.183	false
2021-05-14T06:15Z	0.183	false
2021-05-14T06:00Z	0.183	false
2021-05-14T05:45Z	0.183	false
2021-05-14T05:30Z	0.181	false
2021-05-14T05:15Z	0.181	false
2021-05-14T05:00Z	0.181	false
2021-05-14T04:45Z	0.181	false
2021-05-14T04:30Z	0.181	false
2021-05-14T04:15Z	0.181	false
2021-05-14T04:00Z	0.181	false
2021-05-14T03:45Z	0.179	false
2021-05-14T03:30Z	0.179	false
2021-05-14T03:15Z	0.179	false
2021-05-14T03:00Z	0.179	false
2021-05-14T02:45Z	0.179	false
2021-05-14T02:30Z	0.177	false
2021-05-14T02:15Z	0.177	false
2021-05-14T02:00Z	0.175	false
2021-05-14T01:45Z	0.175	false
2021-05-14T01:30Z	0.173	false
2021-05-14T01:15Z	0.173	false
2021-05-14T01:00Z	0.171	false
2021-05-14T00:45Z	0.171	false
2021-05-14T00:30Z	0.171	false
2021-05-14T00:15Z	0.171	false
2021-05-14T00:00Z	0.171	false
2021-05-13T23:45Z	0.171	false
2021-05-13T23:30Z	0.171	false
2021-05-13T23:15Z	0.171	false
2021-05-13T23:00Z	0.171	false
2021-05-13T22:45Z	0.173	false
2021-05-13T22:30Z	0.173	false
2021-05-13T22:15Z	0.173	false
2021-05-13T22:00Z	0.173	false
2021-05-13T21:45Z	0.173	false
2021-05-13T21:30Z	0.173	false
2021-05-13T21:15Z	0.173	false
2021-05-13T21:00Z	0.173	false
2021-05-13T20:45Z	0.173	false
2021-05-13T20:30Z	0.173	false
2021-05-13T20:15Z	0.171	false
2021-05-13T20:00Z	0.171	false
2021-05-13T19:45Z	0.171	false
2021-05-13T19:30Z	0.171	false
2021-05-13T19:15Z	0.171	false
2021-05-13T19:00Z	0.171	false
2021-05-13T18:45Z	0.169	false
2021-05-13T18:30Z	0.169	false
2021-05-13T18:15Z	0.169	false
2021-05-13T18:00Z	0.169	false
2021-05-13T17:45Z	0.169	false
2021-05-13T17:30Z	0.167	false
2021-05-13T17:15Z	0.167	false
2021-05-13T17:00Z	0.167	false
2021-05-13T16:45Z	0.167	false
2021-05-13T16:30Z	0.167	false
2021-05-13T16:15Z	0.167	false
2021-05-13T16:00Z	0.167	false
2021-05-13T15:45Z	0.167	false
2021-05-13T15:30Z	0.167	false
2021-05-13T15:15Z	0.167	false
2021-05-13T15:00Z	0.167	false
2021-05-13T14:45Z	0.167	false
2021-05-13T14:30Z	0.165	false
2021-05-13T14:15Z	0.165	false
2021-05-13T14:00Z	0.165	false
2021-05-13T13:45Z	0.165	false
2021-05-13T13:30Z	0.165	false
2021-05-13T13:15Z	0.165	false
2021-05-13T13:00Z	0.165	false
2021-05-13T12:45Z	0.165	false
2021-05-13T12:30Z	0.165	false
2021-05-13T12:15Z	0.163	false
2021-05-13T12:00Z	0.163	false
2021-05-13T11:45Z	0.163	false
2021-05-13T11:30Z	0.163	false
2021-05-13T11:15Z	0.161	false
2021-05-13T11:00Z	0.161	false
2021-05-13T10:45Z	0.161	false
2021-05-13T10:30Z	0.161	false
2021-05-13T10:15Z	0.161	false
2021-05-13T10:00Z	0.161	false
2021-05-13T09:45Z	0.161	false
2021-05-13T09:30Z	0.161	false
2021-05-13T09:15Z	0.161	false
2021-05-13T09:00Z	0.161	false
2021-05-13T08:45Z	0.161	false
2021-05-13T08:30Z	0.161	false
2021-05-13T08:15Z	0.161	false
2021-05-13T08:00Z	0.161	false
2021-05-13T07:45Z	0.161	false
2021-05-13T07:30Z	0.161	false
2021-05-13T07:15Z	0.161	false
2021-05-13T07:00Z	0.161	false
2021-05-13T06:45Z	0.161	false
2021-05-13T06:30Z	0.163	false
2021-05-13T06:15Z	0.163	false
2021-05-13T06:00Z	0.163	false
2021-05-13T05:45Z	0.163	false
2021-05-13T05:30Z	0.163	false
2021-05-13T05:15Z	0.163	false
2021-05-13T05:00Z	0.163	false
2021-05-13T04:45Z	0.163	false
2021-05-13T04:30Z	0.165	false
2021-05-13T04:15Z	0.165	false
2021-05-13T04:00Z	0.165	false
2021-05-13T03:45Z	0.165	false
2021-05-13T03:30Z	0.165	false
2021-05-13T03:15Z	0.165	false
2021-05-13T03:00Z	0.165	false
2021-05-13T02:45Z	0.165	false
2021-05-13T02:30Z	0.165	false
2021-05-13T02:15Z	0.165	false
2021-05-13T02:00Z	0.165	false
2021-05-13T01:45Z	0.165	false
2021-05-13T01:30Z	0.165	false
2021-05-13T01:15Z	0.165	false
2021-05-13T01:00Z	0.165	false
2021-05-13T00:45Z	0.163	false
2021-05-13T00:30Z	0.163	false
2021-05-13T00:15Z	0.163	false
2021-05-13T00:00Z	0.163	false
2021-05-12T23:45Z	0.163	false
2021-05-12T23:30Z	0.163	false
2021-05-12T23:15Z	0.163	false
2021-05-12T23:00Z	0.163	false
2021-05-12T22:45Z	0.163	false
2021-05-12T22:30Z	0.163	false
2021-05-12T22:15Z	0.163	false

Forecast data

Key information

• Station name: Mardock
• Station ID: 7347
• River name: River Ash
• Typical range: 0.10m to 0.80m
• Highest level on record: 1.61m on 22 October 2001
• Site datum: 36.32mAOD (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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