River level Chertsey Bourne at Free Prae Road

Check for flood warnings in this area

Latest recorded level 1.17m at 6:15pm Wednesday 20 March 2019.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.60m 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
2019-03-20T18:15Z	1.171	false
2019-03-20T18:00Z	1.172	false
2019-03-20T17:45Z	1.173	false
2019-03-20T17:30Z	1.173	false
2019-03-20T17:15Z	1.174	false
2019-03-20T17:00Z	1.175	false
2019-03-20T16:45Z	1.176	false
2019-03-20T16:30Z	1.177	false
2019-03-20T16:15Z	1.177	false
2019-03-20T16:00Z	1.178	false
2019-03-20T15:45Z	1.179	false
2019-03-20T15:30Z	1.18	false
2019-03-20T15:15Z	1.18	false
2019-03-20T15:00Z	1.18	false
2019-03-20T14:45Z	1.181	false
2019-03-20T14:30Z	1.181	false
2019-03-20T14:15Z	1.181	false
2019-03-20T14:00Z	1.18	false
2019-03-20T13:45Z	1.18	false
2019-03-20T13:30Z	1.178	false
2019-03-20T13:15Z	1.177	false
2019-03-20T13:00Z	1.176	false
2019-03-20T12:45Z	1.174	false
2019-03-20T12:30Z	1.172	false
2019-03-20T12:15Z	1.169	false
2019-03-20T12:00Z	1.166	false
2019-03-20T11:45Z	1.162	false
2019-03-20T11:30Z	1.158	false
2019-03-20T11:15Z	1.153	false
2019-03-20T11:00Z	1.147	false
2019-03-20T10:45Z	1.142	false
2019-03-20T10:30Z	1.137	false
2019-03-20T10:15Z	1.133	false
2019-03-20T10:00Z	1.129	false
2019-03-20T09:45Z	1.128	false
2019-03-20T09:30Z	1.126	false
2019-03-20T09:15Z	1.126	false
2019-03-20T09:00Z	1.126	false
2019-03-20T08:45Z	1.127	false
2019-03-20T08:30Z	1.128	false
2019-03-20T08:15Z	1.131	false
2019-03-20T08:00Z	1.133	false
2019-03-20T07:45Z	1.136	false
2019-03-20T07:30Z	1.138	false
2019-03-20T07:15Z	1.141	false
2019-03-20T07:00Z	1.144	false
2019-03-20T06:45Z	1.147	false
2019-03-20T06:30Z	1.15	false
2019-03-20T06:15Z	1.153	false
2019-03-20T06:00Z	1.156	false
2019-03-20T05:45Z	1.159	false
2019-03-20T05:30Z	1.162	false
2019-03-20T05:15Z	1.163	false
2019-03-20T05:00Z	1.166	false
2019-03-20T04:45Z	1.169	false
2019-03-20T04:30Z	1.171	false
2019-03-20T04:15Z	1.174	false
2019-03-20T04:00Z	1.177	false
2019-03-20T03:45Z	1.18	false
2019-03-20T03:30Z	1.183	false
2019-03-20T03:15Z	1.186	false
2019-03-20T03:00Z	1.189	false
2019-03-20T02:45Z	1.191	false
2019-03-20T02:30Z	1.193	false
2019-03-20T02:15Z	1.196	false
2019-03-20T02:00Z	1.197	false
2019-03-20T01:45Z	1.199	false
2019-03-20T01:30Z	1.2	false
2019-03-20T01:15Z	1.201	false
2019-03-20T01:00Z	1.201	false
2019-03-20T00:45Z	1.201	false
2019-03-20T00:30Z	1.201	false
2019-03-20T00:15Z	1.201	false
2019-03-20T00:00Z	1.2	false
2019-03-19T23:45Z	1.199	false
2019-03-19T23:30Z	1.197	false
2019-03-19T23:15Z	1.196	false
2019-03-19T23:00Z	1.194	false
2019-03-19T22:45Z	1.192	false
2019-03-19T22:30Z	1.191	false
2019-03-19T22:15Z	1.189	false
2019-03-19T22:00Z	1.188	false
2019-03-19T21:45Z	1.187	false
2019-03-19T21:30Z	1.186	false
2019-03-19T21:15Z	1.185	false
2019-03-19T21:00Z	1.185	false
2019-03-19T20:45Z	1.185	false
2019-03-19T20:30Z	1.186	false
2019-03-19T20:15Z	1.187	false
2019-03-19T20:00Z	1.187	false
2019-03-19T19:45Z	1.189	false
2019-03-19T19:30Z	1.19	false
2019-03-19T19:15Z	1.191	false
2019-03-19T19:00Z	1.192	false
2019-03-19T18:45Z	1.193	false
2019-03-19T18:30Z	1.194	false
2019-03-19T18:15Z	1.195	false
2019-03-19T18:00Z	1.196	false
2019-03-19T17:45Z	1.196	false
2019-03-19T17:30Z	1.197	false
2019-03-19T17:15Z	1.196	false
2019-03-19T17:00Z	1.196	false
2019-03-19T16:45Z	1.196	false
2019-03-19T16:30Z	1.196	false
2019-03-19T16:15Z	1.196	false
2019-03-19T16:00Z	1.196	false
2019-03-19T15:45Z	1.196	false
2019-03-19T15:30Z	1.196	false
2019-03-19T15:15Z	1.196	false
2019-03-19T15:00Z	1.196	false
2019-03-19T14:45Z	1.196	false
2019-03-19T14:30Z	1.195	false
2019-03-19T14:15Z	1.195	false
2019-03-19T14:00Z	1.194	false
2019-03-19T13:45Z	1.193	false
2019-03-19T13:30Z	1.192	false
2019-03-19T13:15Z	1.191	false
2019-03-19T13:00Z	1.189	false
2019-03-19T12:45Z	1.187	false
2019-03-19T12:30Z	1.185	false
2019-03-19T04:15Z	1.196	false
2019-03-19T04:00Z	1.199	false
2019-03-19T03:45Z	1.202	false
2019-03-19T03:30Z	1.205	false
2019-03-19T03:15Z	1.208	false
2019-03-19T03:00Z	1.211	false
2019-03-19T02:45Z	1.213	false
2019-03-19T02:30Z	1.216	false
2019-03-19T02:15Z	1.218	false
2019-03-19T02:00Z	1.22	false
2019-03-19T01:45Z	1.222	false
2019-03-19T01:30Z	1.223	false
2019-03-19T01:15Z	1.224	false
2019-03-19T01:00Z	1.224	false
2019-03-19T00:45Z	1.225	false
2019-03-19T00:30Z	1.225	false
2019-03-19T00:15Z	1.225	false
2019-03-19T00:00Z	1.225	false
2019-03-18T23:45Z	1.225	false
2019-03-18T23:30Z	1.224	false
2019-03-18T23:15Z	1.222	false
2019-03-18T23:00Z	1.221	false
2019-03-18T22:45Z	1.22	false
2019-03-18T22:30Z	1.219	false
2019-03-18T22:15Z	1.218	false
2019-03-18T22:00Z	1.217	false
2019-03-18T21:45Z	1.216	false
2019-03-18T21:30Z	1.216	false
2019-03-18T21:15Z	1.216	false
2019-03-18T21:00Z	1.216	false
2019-03-18T20:45Z	1.216	false
2019-03-18T20:30Z	1.217	false
2019-03-18T20:15Z	1.218	false
2019-03-18T20:00Z	1.218	false
2019-03-18T19:45Z	1.219	false
2019-03-18T19:30Z	1.221	false
2019-03-18T19:15Z	1.222	false
2019-03-18T19:00Z	1.223	false
2019-03-18T18:45Z	1.224	false
2019-03-18T18:30Z	1.226	false
2019-03-18T18:15Z	1.226	false
2019-03-18T18:00Z	1.227	false
2019-03-18T17:45Z	1.227	false
2019-03-18T17:30Z	1.228	false
2019-03-18T17:15Z	1.228	false
2019-03-18T17:00Z	1.228	false
2019-03-18T16:45Z	1.228	false
2019-03-18T16:30Z	1.228	false
2019-03-18T16:15Z	1.228	false
2019-03-18T16:00Z	1.228	false
2019-03-18T15:45Z	1.228	false
2019-03-18T15:30Z	1.229	false
2019-03-18T15:15Z	1.229	false
2019-03-18T15:00Z	1.229	false
2019-03-18T14:45Z	1.229	false
2019-03-18T14:30Z	1.229	false
2019-03-18T14:15Z	1.229	false
2019-03-18T14:00Z	1.229	false
2019-03-18T13:45Z	1.228	false
2019-03-18T13:30Z	1.227	false
2019-03-18T13:15Z	1.226	false
2019-03-18T13:00Z	1.224	false
2019-03-18T12:45Z	1.222	false
2019-03-18T12:30Z	1.22	false
2019-03-18T12:15Z	1.218	false
2019-03-18T12:00Z	1.215	false
2019-03-18T11:45Z	1.212	false
2019-03-18T11:30Z	1.209	false
2019-03-18T11:15Z	1.205	false
2019-03-18T11:00Z	1.202	false
2019-03-18T10:45Z	1.199	false
2019-03-18T10:30Z	1.196	false
2019-03-18T10:15Z	1.193	false
2019-03-18T10:00Z	1.191	false
2019-03-18T09:45Z	1.19	false
2019-03-18T09:30Z	1.189	false
2019-03-18T09:15Z	1.19	false
2019-03-18T09:00Z	1.191	false
2019-03-18T08:45Z	1.192	false
2019-03-18T08:30Z	1.194	false
2019-03-18T08:15Z	1.196	false
2019-03-18T08:00Z	1.198	false
2019-03-18T07:45Z	1.201	false
2019-03-18T07:30Z	1.204	false
2019-03-18T07:15Z	1.206	false
2019-03-18T07:00Z	1.209	false
2019-03-18T06:45Z	1.211	false
2019-03-18T06:30Z	1.214	false
2019-03-18T06:15Z	1.217	false
2019-03-18T06:00Z	1.219	false
2019-03-18T05:45Z	1.222	false
2019-03-18T05:30Z	1.225	false
2019-03-18T05:15Z	1.228	false
2019-03-18T05:00Z	1.231	false
2019-03-18T04:45Z	1.234	false
2019-03-18T04:30Z	1.237	false
2019-03-18T04:15Z	1.24	false
2019-03-18T04:00Z	1.244	false
2019-03-18T03:45Z	1.247	false
2019-03-18T03:30Z	1.25	false
2019-03-18T03:15Z	1.253	false
2019-03-18T03:00Z	1.256	false
2019-03-18T02:45Z	1.258	false
2019-03-18T02:30Z	1.261	false
2019-03-18T02:15Z	1.263	false
2019-03-18T02:00Z	1.265	false
2019-03-18T01:45Z	1.267	false
2019-03-18T01:30Z	1.269	false
2019-03-18T01:15Z	1.27	false
2019-03-18T01:00Z	1.271	false
2019-03-18T00:45Z	1.272	false
2019-03-18T00:30Z	1.273	false
2019-03-18T00:15Z	1.273	false
2019-03-18T00:00Z	1.273	false
2019-03-17T23:45Z	1.274	false
2019-03-17T23:30Z	1.274	false
2019-03-17T23:15Z	1.273	false
2019-03-17T23:00Z	1.273	false
2019-03-17T22:45Z	1.273	false
2019-03-17T22:30Z	1.273	false
2019-03-17T22:15Z	1.272	false
2019-03-17T22:00Z	1.272	false
2019-03-17T21:45Z	1.272	false
2019-03-17T21:30Z	1.272	false
2019-03-17T21:15Z	1.272	false
2019-03-17T21:00Z	1.272	false
2019-03-17T20:45Z	1.273	false
2019-03-17T20:30Z	1.273	false
2019-03-17T20:15Z	1.274	false
2019-03-17T20:00Z	1.274	false
2019-03-17T19:45Z	1.275	false
2019-03-17T19:30Z	1.276	false
2019-03-17T19:15Z	1.278	false
2019-03-17T19:00Z	1.279	false
2019-03-17T18:45Z	1.28	false
2019-03-17T18:30Z	1.281	false
2019-03-17T18:15Z	1.282	false
2019-03-17T18:00Z	1.282	false
2019-03-17T17:45Z	1.283	false
2019-03-17T17:30Z	1.283	false
2019-03-17T17:15Z	1.283	false
2019-03-17T17:00Z	1.283	false
2019-03-17T16:45Z	1.283	false
2019-03-17T16:30Z	1.283	false
2019-03-17T16:15Z	1.283	false
2019-03-17T16:00Z	1.282	false
2019-03-17T15:45Z	1.281	false
2019-03-17T15:30Z	1.28	false
2019-03-17T15:15Z	1.279	false
2019-03-17T15:00Z	1.278	false
2019-03-17T14:45Z	1.277	false
2019-03-17T14:30Z	1.275	false
2019-03-17T14:15Z	1.273	false
2019-03-17T14:00Z	1.271	false
2019-03-17T13:45Z	1.269	false
2019-03-17T13:30Z	1.266	false
2019-03-17T13:15Z	1.264	false
2019-03-17T13:00Z	1.261	false
2019-03-17T12:45Z	1.258	false
2019-03-17T12:30Z	1.256	false
2019-03-17T12:15Z	1.253	false
2019-03-17T12:00Z	1.25	false
2019-03-17T11:45Z	1.248	false
2019-03-17T11:30Z	1.245	false
2019-03-17T11:15Z	1.244	false
2019-03-17T11:00Z	1.242	false
2019-03-17T10:45Z	1.241	false
2019-03-17T10:30Z	1.241	false
2019-03-17T10:15Z	1.241	false
2019-03-17T10:00Z	1.242	false
2019-03-17T09:45Z	1.243	false
2019-03-17T09:30Z	1.244	false
2019-03-17T09:15Z	1.246	false
2019-03-17T09:00Z	1.247	false
2019-03-17T08:45Z	1.249	false
2019-03-17T08:30Z	1.251	false
2019-03-17T08:15Z	1.254	false
2019-03-17T08:00Z	1.256	false
2019-03-17T07:45Z	1.258	false
2019-03-17T07:30Z	1.26	false
2019-03-17T07:15Z	1.263	false
2019-03-17T07:00Z	1.265	false
2019-03-17T06:45Z	1.267	false
2019-03-17T06:30Z	1.269	false
2019-03-17T06:15Z	1.271	false
2019-03-17T06:00Z	1.273	false
2019-03-17T05:45Z	1.275	false
2019-03-17T05:30Z	1.277	false
2019-03-17T05:15Z	1.278	false
2019-03-17T05:00Z	1.28	false
2019-03-17T04:45Z	1.282	false
2019-03-17T04:30Z	1.284	false
2019-03-17T04:15Z	1.286	false
2019-03-17T04:00Z	1.287	false
2019-03-17T03:45Z	1.289	false
2019-03-17T03:30Z	1.291	false
2019-03-17T03:15Z	1.292	false
2019-03-17T03:00Z	1.293	false
2019-03-17T02:45Z	1.294	false
2019-03-17T02:30Z	1.295	false
2019-03-17T02:15Z	1.296	false
2019-03-17T02:00Z	1.297	false
2019-03-17T01:45Z	1.297	false
2019-03-17T01:30Z	1.297	false
2019-03-17T01:15Z	1.297	false
2019-03-17T01:00Z	1.297	false
2019-03-17T00:45Z	1.297	false
2019-03-17T00:30Z	1.296	false
2019-03-17T00:15Z	1.296	false
2019-03-17T00:00Z	1.295	false
2019-03-16T23:45Z	1.294	false
2019-03-16T23:30Z	1.292	false
2019-03-16T23:15Z	1.291	false
2019-03-16T23:00Z	1.289	false
2019-03-16T22:45Z	1.287	false
2019-03-16T22:30Z	1.285	false
2019-03-16T22:15Z	1.283	false
2019-03-16T22:00Z	1.28	false
2019-03-16T21:45Z	1.278	false
2019-03-16T21:30Z	1.277	false
2019-03-16T21:15Z	1.276	false
2019-03-16T21:00Z	1.276	false
2019-03-16T20:45Z	1.276	false
2019-03-16T20:30Z	1.277	false
2019-03-16T20:15Z	1.277	false
2019-03-16T20:00Z	1.278	false
2019-03-16T19:45Z	1.279	false
2019-03-16T19:30Z	1.28	false
2019-03-16T19:15Z	1.281	false
2019-03-16T19:00Z	1.282	false
2019-03-16T18:45Z	1.283	false
2019-03-16T18:30Z	1.284	false
2019-03-16T18:15Z	1.284	false
2019-03-16T18:00Z	1.284	false
2019-03-16T17:45Z	1.284	false
2019-03-16T17:30Z	1.284	false
2019-03-16T17:15Z	1.283	false
2019-03-16T17:00Z	1.283	false
2019-03-16T16:45Z	1.283	false
2019-03-16T16:30Z	1.282	false
2019-03-16T16:15Z	1.282	false
2019-03-16T16:00Z	1.281	false
2019-03-16T15:45Z	1.279	false
2019-03-16T15:30Z	1.278	false
2019-03-16T15:15Z	1.277	false
2019-03-16T15:00Z	1.276	false
2019-03-16T14:45Z	1.274	false
2019-03-16T14:30Z	1.273	false
2019-03-16T14:15Z	1.272	false
2019-03-16T14:00Z	1.269	false
2019-03-16T13:45Z	1.267	false
2019-03-16T13:30Z	1.265	false
2019-03-16T13:15Z	1.263	false
2019-03-16T13:00Z	1.26	false
2019-03-16T12:45Z	1.258	false
2019-03-16T12:30Z	1.255	false
2019-03-16T12:15Z	1.253	false
2019-03-16T12:00Z	1.251	false
2019-03-16T11:45Z	1.249	false
2019-03-16T11:30Z	1.247	false
2019-03-16T11:15Z	1.245	false
2019-03-16T11:00Z	1.243	false
2019-03-16T10:45Z	1.242	false
2019-03-16T10:30Z	1.242	false
2019-03-16T10:15Z	1.241	false
2019-03-16T10:00Z	1.241	false
2019-03-16T09:45Z	1.242	false
2019-03-16T09:30Z	1.243	false
2019-03-16T09:15Z	1.244	false
2019-03-16T09:00Z	1.245	false
2019-03-16T08:45Z	1.248	false
2019-03-16T08:30Z	1.249	false
2019-03-16T08:15Z	1.251	false
2019-03-16T08:00Z	1.253	false
2019-03-16T07:45Z	1.255	false
2019-03-16T07:30Z	1.257	false
2019-03-16T07:15Z	1.259	false
2019-03-16T07:00Z	1.261	false
2019-03-16T06:45Z	1.263	false
2019-03-16T06:30Z	1.266	false
2019-03-16T06:15Z	1.268	false
2019-03-16T06:00Z	1.271	false
2019-03-16T05:45Z	1.273	false
2019-03-16T05:30Z	1.276	false
2019-03-16T05:15Z	1.278	false
2019-03-16T05:00Z	1.281	false
2019-03-16T04:45Z	1.283	false
2019-03-16T04:30Z	1.285	false
2019-03-16T04:15Z	1.288	false
2019-03-16T04:00Z	1.29	false
2019-03-16T03:45Z	1.292	false
2019-03-16T03:30Z	1.295	false
2019-03-16T03:15Z	1.297	false
2019-03-16T03:00Z	1.299	false
2019-03-16T02:45Z	1.301	false
2019-03-16T02:30Z	1.304	false
2019-03-16T02:15Z	1.305	false
2019-03-16T02:00Z	1.307	false
2019-03-16T01:45Z	1.309	false
2019-03-16T01:30Z	1.31	false
2019-03-16T01:15Z	1.312	false
2019-03-16T01:00Z	1.313	false
2019-03-16T00:45Z	1.314	false
2019-03-16T00:30Z	1.315	false
2019-03-16T00:15Z	1.316	false
2019-03-16T00:00Z	1.317	false
2019-03-15T23:45Z	1.317	false
2019-03-15T23:30Z	1.318	false
2019-03-15T23:15Z	1.318	false
2019-03-15T23:00Z	1.318	false
2019-03-15T22:45Z	1.317	false
2019-03-15T22:30Z	1.318	false
2019-03-15T22:15Z	1.318	false
2019-03-15T22:00Z	1.317	false
2019-03-15T21:45Z	1.318	false
2019-03-15T21:30Z	1.318	false
2019-03-15T21:15Z	1.318	false
2019-03-15T21:00Z	1.319	false
2019-03-15T20:45Z	1.32	false
2019-03-15T20:30Z	1.32	false
2019-03-15T20:15Z	1.321	false
2019-03-15T20:00Z	1.321	false
2019-03-15T19:45Z	1.323	false
2019-03-15T19:30Z	1.323	false
2019-03-15T19:15Z	1.324	false
2019-03-15T19:00Z	1.325	false
2019-03-15T18:45Z	1.326	false
2019-03-15T18:30Z	1.328	false

Forecast data

Key information

• Station name: Free Prae Road
• Station ID: 7220
• River name: Chertsey Bourne
• Typical range: 0.72m to 1.60m
• Highest level on record: 2.63m on 02 January 2003
• Site datum: 10.00mAOD (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
• View your property's long term risk of flooding

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