River level River Yealm at Cornwood

Check for flood warnings in this area

Latest recorded level 0.20m at 5:00pm Sunday 25 July 2021.

River levels at this location in the last 5 days

Now
▼

• Measured level
• When the water level reaches 1.50m 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
2021-07-25T16:00Z	0.199	false
2021-07-25T15:45Z	0.199	false
2021-07-25T15:30Z	0.2	false
2021-07-25T15:15Z	0.196	false
2021-07-25T15:00Z	0.197	false
2021-07-25T14:45Z	0.198	false
2021-07-25T14:30Z	0.199	false
2021-07-25T14:15Z	0.198	false
2021-07-25T14:00Z	0.199	false
2021-07-25T13:45Z	0.199	false
2021-07-25T13:30Z	0.199	false
2021-07-25T13:15Z	0.198	false
2021-07-25T13:00Z	0.204	false
2021-07-25T12:45Z	0.2	false
2021-07-25T12:30Z	0.205	false
2021-07-25T12:15Z	0.204	false
2021-07-25T12:00Z	0.202	false
2021-07-25T11:45Z	0.202	false
2021-07-25T11:30Z	0.203	false
2021-07-25T11:15Z	0.203	false
2021-07-25T11:00Z	0.2	false
2021-07-25T10:45Z	0.201	false
2021-07-25T10:30Z	0.198	false
2021-07-25T10:15Z	0.197	false
2021-07-25T10:00Z	0.196	false
2021-07-25T09:45Z	0.194	false
2021-07-25T09:30Z	0.193	false
2021-07-25T09:15Z	0.19	false
2021-07-25T09:00Z	0.19	false
2021-07-25T08:45Z	0.189	false
2021-07-25T08:30Z	0.191	false
2021-07-25T08:15Z	0.192	false
2021-07-25T08:00Z	0.192	false
2021-07-25T07:45Z	0.192	false
2021-07-25T07:30Z	0.191	false
2021-07-25T07:15Z	0.193	false
2021-07-25T07:00Z	0.191	false
2021-07-25T06:45Z	0.191	false
2021-07-25T06:30Z	0.189	false
2021-07-25T06:15Z	0.189	false
2021-07-25T06:00Z	0.186	false
2021-07-25T05:45Z	0.189	false
2021-07-25T05:30Z	0.188	false
2021-07-25T05:15Z	0.187	false
2021-07-25T05:00Z	0.188	false
2021-07-25T04:45Z	0.191	false
2021-07-25T04:30Z	0.193	false
2021-07-25T04:15Z	0.193	false
2021-07-25T04:00Z	0.193	false
2021-07-25T03:45Z	0.194	false
2021-07-25T03:30Z	0.197	false
2021-07-25T03:15Z	0.197	false
2021-07-25T03:00Z	0.197	false
2021-07-25T02:45Z	0.199	false
2021-07-25T02:30Z	0.198	false
2021-07-25T02:15Z	0.197	false
2021-07-25T02:00Z	0.198	false
2021-07-25T01:45Z	0.199	false
2021-07-25T01:30Z	0.198	false
2021-07-25T01:15Z	0.197	false
2021-07-25T01:00Z	0.197	false
2021-07-25T00:45Z	0.198	false
2021-07-25T00:30Z	0.197	false
2021-07-25T00:15Z	0.196	false
2021-07-25T00:00Z	0.196	false
2021-07-24T23:45Z	0.197	false
2021-07-24T23:30Z	0.199	false
2021-07-24T23:15Z	0.199	false
2021-07-24T23:00Z	0.201	false
2021-07-24T22:45Z	0.2	false
2021-07-24T22:30Z	0.201	false
2021-07-24T22:15Z	0.2	false
2021-07-24T22:00Z	0.203	false
2021-07-24T21:45Z	0.203	false
2021-07-24T21:30Z	0.202	false
2021-07-24T21:15Z	0.203	false
2021-07-24T21:00Z	0.204	false
2021-07-24T20:45Z	0.203	false
2021-07-24T20:30Z	0.205	false
2021-07-24T20:15Z	0.206	false
2021-07-24T20:00Z	0.208	false
2021-07-24T19:45Z	0.209	false
2021-07-24T19:30Z	0.208	false
2021-07-24T19:15Z	0.21	false
2021-07-24T19:00Z	0.211	false
2021-07-24T18:45Z	0.21	false
2021-07-24T18:30Z	0.211	false
2021-07-24T18:15Z	0.212	false
2021-07-24T18:00Z	0.213	false
2021-07-24T17:45Z	0.214	false
2021-07-24T17:30Z	0.216	false
2021-07-24T17:15Z	0.214	false
2021-07-24T17:00Z	0.213	false
2021-07-24T16:45Z	0.214	false
2021-07-24T16:30Z	0.215	false
2021-07-24T16:15Z	0.212	false
2021-07-24T16:00Z	0.213	false
2021-07-24T15:45Z	0.213	false
2021-07-24T15:30Z	0.213	false
2021-07-24T15:15Z	0.213	false
2021-07-24T15:00Z	0.214	false
2021-07-24T14:45Z	0.214	false
2021-07-24T14:30Z	0.214	false
2021-07-24T14:15Z	0.215	false
2021-07-24T14:00Z	0.214	false
2021-07-24T13:45Z	0.213	false
2021-07-24T13:30Z	0.213	false
2021-07-24T13:15Z	0.215	false
2021-07-24T13:00Z	0.21	false
2021-07-24T12:45Z	0.21	false
2021-07-24T12:30Z	0.209	false
2021-07-24T12:15Z	0.207	false
2021-07-24T12:00Z	0.202	false
2021-07-24T11:45Z	0.199	false
2021-07-24T11:30Z	0.199	false
2021-07-24T11:15Z	0.198	false
2021-07-24T11:00Z	0.198	false
2021-07-24T10:45Z	0.193	false
2021-07-24T10:30Z	0.197	false
2021-07-24T10:15Z	0.197	false
2021-07-23T23:15Z	0.21	false
2021-07-23T23:00Z	0.208	false
2021-07-23T22:45Z	0.207	false
2021-07-23T22:30Z	0.207	false
2021-07-23T22:15Z	0.207	false
2021-07-23T22:00Z	0.208	false
2021-07-23T21:45Z	0.209	false
2021-07-23T21:30Z	0.211	false
2021-07-23T21:15Z	0.21	false
2021-07-23T21:00Z	0.21	false
2021-07-23T20:45Z	0.211	false
2021-07-23T20:30Z	0.211	false
2021-07-23T20:15Z	0.21	false
2021-07-23T20:00Z	0.211	false
2021-07-23T19:45Z	0.21	false
2021-07-23T19:30Z	0.209	false
2021-07-23T19:15Z	0.21	false
2021-07-23T19:00Z	0.211	false
2021-07-23T18:45Z	0.212	false
2021-07-23T18:30Z	0.214	false
2021-07-23T18:15Z	0.213	false
2021-07-23T18:00Z	0.214	false
2021-07-23T17:45Z	0.212	false
2021-07-23T17:30Z	0.213	false
2021-07-23T17:15Z	0.214	false
2021-07-23T17:00Z	0.216	false
2021-07-23T16:45Z	0.213	false
2021-07-23T16:30Z	0.213	false
2021-07-23T16:15Z	0.213	false
2021-07-23T16:00Z	0.211	false
2021-07-23T15:45Z	0.211	false
2021-07-23T15:30Z	0.212	false
2021-07-23T15:15Z	0.215	false
2021-07-23T15:00Z	0.212	false
2021-07-23T14:45Z	0.21	false
2021-07-23T14:30Z	0.213	false
2021-07-23T14:15Z	0.214	false
2021-07-23T14:00Z	0.215	false
2021-07-23T13:45Z	0.215	false
2021-07-23T13:30Z	0.217	false
2021-07-23T13:15Z	0.218	false
2021-07-23T13:00Z	0.214	false
2021-07-23T12:45Z	0.215	false
2021-07-23T12:30Z	0.212	false
2021-07-23T12:15Z	0.212	false
2021-07-23T12:00Z	0.212	false
2021-07-23T11:45Z	0.213	false
2021-07-23T11:30Z	0.214	false
2021-07-23T11:15Z	0.213	false
2021-07-23T11:00Z	0.215	false
2021-07-23T10:45Z	0.215	false
2021-07-23T10:30Z	0.213	false
2021-07-23T10:15Z	0.212	false
2021-07-23T10:00Z	0.212	false
2021-07-23T09:45Z	0.21	false
2021-07-23T09:30Z	0.209	false
2021-07-23T09:15Z	0.209	false
2021-07-23T09:00Z	0.206	false
2021-07-23T08:45Z	0.206	false
2021-07-23T08:30Z	0.209	false
2021-07-23T08:15Z	0.206	false
2021-07-23T08:00Z	0.206	false
2021-07-23T07:45Z	0.206	false
2021-07-23T07:30Z	0.208	false
2021-07-23T07:15Z	0.208	false
2021-07-23T07:00Z	0.207	false
2021-07-23T06:45Z	0.209	false
2021-07-23T06:30Z	0.21	false
2021-07-23T06:15Z	0.21	false
2021-07-23T06:00Z	0.208	false
2021-07-23T05:45Z	0.207	false
2021-07-23T05:30Z	0.209	false
2021-07-23T05:15Z	0.21	false
2021-07-23T05:00Z	0.21	false
2021-07-23T04:45Z	0.211	false
2021-07-23T04:30Z	0.212	false
2021-07-23T04:15Z	0.212	false
2021-07-23T04:00Z	0.209	false
2021-07-23T03:45Z	0.213	false
2021-07-23T03:30Z	0.217	false
2021-07-23T03:15Z	0.214	false
2021-07-23T03:00Z	0.213	false
2021-07-23T02:45Z	0.214	false
2021-07-23T02:30Z	0.214	false
2021-07-23T02:15Z	0.218	false
2021-07-23T02:00Z	0.216	false
2021-07-23T01:45Z	0.216	false
2021-07-23T01:30Z	0.218	false
2021-07-23T01:15Z	0.219	false
2021-07-23T01:00Z	0.219	false
2021-07-23T00:45Z	0.221	false
2021-07-23T00:30Z	0.222	false
2021-07-23T00:15Z	0.22	false
2021-07-23T00:00Z	0.221	false
2021-07-22T23:45Z	0.223	false
2021-07-22T23:30Z	0.219	false
2021-07-22T23:15Z	0.222	false
2021-07-22T23:00Z	0.223	false
2021-07-22T22:45Z	0.22	false
2021-07-22T22:30Z	0.224	false
2021-07-22T22:15Z	0.223	false
2021-07-22T22:00Z	0.222	false
2021-07-22T21:45Z	0.225	false
2021-07-22T21:30Z	0.227	false
2021-07-22T21:15Z	0.229	false
2021-07-22T21:00Z	0.23	false
2021-07-22T20:45Z	0.227	false
2021-07-22T20:30Z	0.232	false
2021-07-22T20:15Z	0.236	false
2021-07-22T20:00Z	0.236	false
2021-07-22T19:45Z	0.238	false
2021-07-22T19:30Z	0.239	false
2021-07-22T19:15Z	0.239	false
2021-07-22T19:00Z	0.238	false
2021-07-22T18:45Z	0.239	false
2021-07-22T18:30Z	0.24	false
2021-07-22T18:15Z	0.239	false
2021-07-22T18:00Z	0.244	false
2021-07-22T17:45Z	0.242	false
2021-07-22T17:30Z	0.244	false
2021-07-22T17:15Z	0.244	false
2021-07-22T17:00Z	0.246	false
2021-07-22T16:45Z	0.242	false
2021-07-22T16:30Z	0.244	false
2021-07-22T16:15Z	0.243	false
2021-07-22T16:00Z	0.245	false
2021-07-22T15:45Z	0.247	false
2021-07-22T15:30Z	0.246	false
2021-07-22T15:15Z	0.246	false
2021-07-22T15:00Z	0.246	false
2021-07-22T14:45Z	0.245	false
2021-07-22T14:30Z	0.243	false
2021-07-22T14:15Z	0.244	false
2021-07-22T14:00Z	0.242	false
2021-07-22T13:45Z	0.243	false
2021-07-22T13:30Z	0.241	false
2021-07-22T13:15Z	0.243	false
2021-07-22T13:00Z	0.24	false
2021-07-22T12:45Z	0.239	false
2021-07-22T12:30Z	0.237	false
2021-07-22T12:15Z	0.237	false
2021-07-22T12:00Z	0.233	false
2021-07-22T11:45Z	0.236	false
2021-07-22T11:30Z	0.233	false
2021-07-22T11:15Z	0.232	false
2021-07-22T11:00Z	0.231	false
2021-07-22T10:45Z	0.229	false
2021-07-22T10:30Z	0.228	false
2021-07-22T10:15Z	0.227	false
2021-07-22T10:00Z	0.223	false
2021-07-22T09:45Z	0.223	false
2021-07-22T09:30Z	0.218	false
2021-07-22T09:15Z	0.217	false
2021-07-22T09:00Z	0.214	false
2021-07-22T08:45Z	0.212	false
2021-07-22T08:30Z	0.209	false
2021-07-22T08:15Z	0.203	false
2021-07-22T08:00Z	0.206	false
2021-07-22T07:45Z	0.208	false
2021-07-22T07:30Z	0.206	false
2021-07-22T07:15Z	0.206	false
2021-07-22T07:00Z	0.208	false
2021-07-22T06:45Z	0.208	false
2021-07-22T06:30Z	0.208	false
2021-07-22T06:15Z	0.206	false
2021-07-22T06:00Z	0.207	false
2021-07-22T05:45Z	0.205	false
2021-07-22T05:30Z	0.204	false
2021-07-22T05:15Z	0.205	false
2021-07-22T05:00Z	0.205	false
2021-07-22T04:45Z	0.205	false
2021-07-22T04:30Z	0.209	false
2021-07-22T04:15Z	0.207	false
2021-07-22T04:00Z	0.209	false
2021-07-22T03:45Z	0.21	false
2021-07-22T03:30Z	0.211	false
2021-07-22T03:15Z	0.214	false
2021-07-22T03:00Z	0.215	false
2021-07-22T02:45Z	0.214	false
2021-07-22T02:30Z	0.216	false
2021-07-22T02:15Z	0.216	false
2021-07-22T02:00Z	0.219	false
2021-07-22T01:45Z	0.219	false
2021-07-22T01:30Z	0.219	false
2021-07-22T01:15Z	0.218	false
2021-07-22T01:00Z	0.221	false
2021-07-22T00:45Z	0.223	false
2021-07-22T00:30Z	0.222	false
2021-07-22T00:15Z	0.219	false
2021-07-22T00:00Z	0.222	false
2021-07-21T23:45Z	0.223	false
2021-07-21T23:30Z	0.224	false
2021-07-21T23:15Z	0.225	false
2021-07-21T23:00Z	0.227	false
2021-07-21T22:45Z	0.228	false
2021-07-21T22:30Z	0.229	false
2021-07-21T22:15Z	0.231	false
2021-07-21T22:00Z	0.232	false
2021-07-21T21:45Z	0.234	false
2021-07-21T21:30Z	0.231	false
2021-07-21T21:15Z	0.231	false
2021-07-21T21:00Z	0.229	false
2021-07-21T20:45Z	0.23	false
2021-07-21T20:30Z	0.233	false
2021-07-21T20:15Z	0.232	false
2021-07-21T20:00Z	0.233	false
2021-07-21T19:45Z	0.234	false
2021-07-21T19:30Z	0.231	false
2021-07-21T19:15Z	0.232	false
2021-07-21T19:00Z	0.234	false
2021-07-21T18:45Z	0.231	false
2021-07-21T18:30Z	0.228	false
2021-07-21T18:15Z	0.23	false
2021-07-21T18:00Z	0.23	false
2021-07-21T17:45Z	0.23	false
2021-07-21T17:30Z	0.228	false
2021-07-21T17:15Z	0.231	false
2021-07-21T17:00Z	0.231	false
2021-07-21T16:45Z	0.23	false
2021-07-21T16:30Z	0.233	false
2021-07-21T16:15Z	0.232	false
2021-07-21T16:00Z	0.23	false
2021-07-21T15:45Z	0.23	false
2021-07-21T15:30Z	0.229	false
2021-07-21T15:15Z	0.228	false
2021-07-21T15:00Z	0.228	false
2021-07-21T14:45Z	0.227	false
2021-07-21T14:30Z	0.226	false
2021-07-21T14:15Z	0.223	false
2021-07-21T14:00Z	0.222	false
2021-07-21T13:45Z	0.219	false
2021-07-21T13:30Z	0.22	false
2021-07-21T13:15Z	0.218	false
2021-07-21T13:00Z	0.217	false
2021-07-21T12:45Z	0.217	false
2021-07-21T12:30Z	0.217	false
2021-07-21T12:15Z	0.214	false
2021-07-21T12:00Z	0.213	false
2021-07-21T11:45Z	0.216	false
2021-07-21T11:30Z	0.217	false
2021-07-21T11:15Z	0.216	false
2021-07-21T11:00Z	0.214	false
2021-07-21T10:45Z	0.213	false
2021-07-21T10:30Z	0.208	false
2021-07-21T10:15Z	0.206	false
2021-07-21T10:00Z	0.205	false
2021-07-21T09:45Z	0.205	false
2021-07-21T09:30Z	0.203	false
2021-07-21T09:15Z	0.204	false
2021-07-21T09:00Z	0.202	false
2021-07-21T08:45Z	0.205	false
2021-07-21T08:30Z	0.203	false
2021-07-21T08:15Z	0.205	false
2021-07-21T08:00Z	0.204	false
2021-07-21T07:45Z	0.204	false
2021-07-21T07:30Z	0.204	false
2021-07-21T07:15Z	0.204	false
2021-07-21T07:00Z	0.205	false
2021-07-21T06:45Z	0.203	false
2021-07-21T06:30Z	0.203	false
2021-07-21T06:15Z	0.203	false
2021-07-21T06:00Z	0.204	false
2021-07-21T05:45Z	0.204	false
2021-07-21T05:30Z	0.206	false
2021-07-21T05:15Z	0.206	false
2021-07-21T05:00Z	0.204	false
2021-07-21T04:45Z	0.207	false
2021-07-21T04:30Z	0.207	false
2021-07-21T04:15Z	0.207	false
2021-07-21T04:00Z	0.21	false
2021-07-21T03:45Z	0.207	false
2021-07-21T03:30Z	0.21	false
2021-07-21T03:15Z	0.21	false
2021-07-21T03:00Z	0.21	false
2021-07-21T02:45Z	0.208	false
2021-07-21T02:30Z	0.211	false
2021-07-21T02:15Z	0.21	false
2021-07-21T02:00Z	0.211	false
2021-07-21T01:45Z	0.213	false
2021-07-21T01:30Z	0.212	false
2021-07-21T01:15Z	0.215	false
2021-07-21T01:00Z	0.215	false
2021-07-21T00:45Z	0.216	false
2021-07-21T00:30Z	0.216	false
2021-07-21T00:15Z	0.218	false
2021-07-21T00:00Z	0.219	false
2021-07-20T23:45Z	0.222	false
2021-07-20T23:30Z	0.221	false
2021-07-20T23:15Z	0.223	false
2021-07-20T23:00Z	0.222	false
2021-07-20T22:45Z	0.226	false
2021-07-20T22:30Z	0.226	false
2021-07-20T22:15Z	0.226	false
2021-07-20T22:00Z	0.228	false
2021-07-20T21:45Z	0.227	false
2021-07-20T21:30Z	0.227	false
2021-07-20T21:15Z	0.225	false
2021-07-20T21:00Z	0.225	false
2021-07-20T20:45Z	0.221	false
2021-07-20T20:30Z	0.224	false
2021-07-20T20:15Z	0.223	false
2021-07-20T20:00Z	0.225	false
2021-07-20T19:45Z	0.226	false
2021-07-20T19:30Z	0.222	false
2021-07-20T19:15Z	0.226	false
2021-07-20T19:00Z	0.227	false
2021-07-20T18:45Z	0.225	false
2021-07-20T18:30Z	0.225	false
2021-07-20T18:15Z	0.225	false
2021-07-20T18:00Z	0.227	false
2021-07-20T17:45Z	0.228	false
2021-07-20T17:30Z	0.226	false
2021-07-20T17:15Z	0.225	false
2021-07-20T17:00Z	0.227	false
2021-07-20T16:45Z	0.228	false
2021-07-20T16:30Z	0.229	false
2021-07-20T16:15Z	0.228	false

Forecast data

Key information

• Station name: Cornwood
• Station ID: 3188
• River name: River Yealm
• Typical range: 0.11m to 1.50m
• Highest level on record: 2.59m on 07 July 2012
• 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.

Share this page

• Twitter
• Facebook
• Email