River level River Thames at Chertsey Lock (downstream data)

Check for flood warnings in this area

Latest recorded level 3.14m at 11:00pm Friday 24 January 2020.

View upstream data for this station

Why are there 2 sets of data for this station?

Some monitoring stations are located near to a man-made structure which affects the river's flow characteristics, for example a weir, or lock. For these stations, we provide river levels from both the upstream and downstream sides of the structure.

River levels at this location in the last 5 days

Now
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• Measured level
• When the water level reaches 3.63m 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
2020-01-24T23:00Z	3.136	false
2020-01-24T22:45Z	3.133	false
2020-01-24T22:30Z	3.132	false
2020-01-24T22:15Z	3.133	false
2020-01-24T22:00Z	3.134	false
2020-01-24T21:45Z	3.122	false
2020-01-24T21:30Z	3.131	false
2020-01-24T21:15Z	3.129	false
2020-01-24T21:00Z	3.134	false
2020-01-24T20:45Z	3.136	false
2020-01-24T20:30Z	3.141	false
2020-01-24T20:15Z	3.147	false
2020-01-24T20:00Z	3.159	false
2020-01-24T19:45Z	3.17	false
2020-01-24T19:30Z	3.165	false
2020-01-24T19:15Z	3.167	false
2020-01-24T19:00Z	3.17	false
2020-01-24T18:45Z	3.165	false
2020-01-24T18:30Z	3.17	false
2020-01-24T18:15Z	3.173	false
2020-01-24T18:00Z	3.178	false
2020-01-24T17:45Z	3.184	false
2020-01-24T17:30Z	3.191	false
2020-01-24T17:15Z	3.196	false
2020-01-24T17:00Z	3.193	false
2020-01-24T16:45Z	3.194	false
2020-01-24T16:30Z	3.191	false
2020-01-24T16:15Z	3.181	false
2020-01-24T16:00Z	3.186	false
2020-01-24T15:45Z	3.188	false
2020-01-24T15:30Z	3.195	false
2020-01-24T15:15Z	3.2	false
2020-01-24T15:00Z	3.2	false
2020-01-24T14:45Z	3.196	false
2020-01-24T14:30Z	3.201	false
2020-01-24T14:15Z	3.198	false
2020-01-24T14:00Z	3.202	false
2020-01-24T13:45Z	3.201	false
2020-01-24T13:30Z	3.199	false
2020-01-24T13:15Z	3.2	false
2020-01-24T13:00Z	3.209	false
2020-01-24T12:45Z	3.212	false
2020-01-24T12:30Z	3.205	false
2020-01-24T12:15Z	3.204	false
2020-01-24T12:00Z	3.207	false
2020-01-24T11:45Z	3.2	false
2020-01-24T11:30Z	3.205	false
2020-01-24T11:15Z	3.2	false
2020-01-24T11:00Z	3.187	false
2020-01-24T10:45Z	3.188	false
2020-01-24T10:30Z	3.18	false
2020-01-24T10:15Z	3.176	false
2020-01-24T10:00Z	3.174	false
2020-01-24T09:45Z	3.174	false
2020-01-24T09:30Z	3.174	false
2020-01-24T09:15Z	3.175	false
2020-01-24T09:00Z	3.18	false
2020-01-24T08:45Z	3.178	false
2020-01-24T08:30Z	3.177	false
2020-01-24T08:15Z	3.18	false
2020-01-24T08:00Z	3.183	false
2020-01-24T07:45Z	3.186	false
2020-01-24T07:30Z	3.182	false
2020-01-24T07:15Z	3.185	false
2020-01-24T07:00Z	3.188	false
2020-01-24T06:45Z	3.189	false
2020-01-24T06:30Z	3.187	false
2020-01-24T06:15Z	3.19	false
2020-01-24T06:00Z	3.192	false
2020-01-24T05:45Z	3.194	false
2020-01-24T05:30Z	3.191	false
2020-01-24T05:15Z	3.187	false
2020-01-24T05:00Z	3.183	false
2020-01-24T04:45Z	3.191	false
2020-01-24T04:30Z	3.193	false
2020-01-24T04:15Z	3.193	false
2020-01-24T04:00Z	3.189	false
2020-01-24T03:45Z	3.191	false
2020-01-24T03:30Z	3.193	false
2020-01-24T03:15Z	3.193	false
2020-01-24T03:00Z	3.196	false
2020-01-24T02:45Z	3.194	false
2020-01-24T02:30Z	3.196	false
2020-01-24T02:15Z	3.193	false
2020-01-24T02:00Z	3.198	false
2020-01-24T01:45Z	3.191	false
2020-01-24T01:30Z	3.197	false
2020-01-24T01:15Z	3.193	false
2020-01-24T01:00Z	3.196	false
2020-01-24T00:45Z	3.194	false
2020-01-24T00:30Z	3.193	false
2020-01-24T00:15Z	3.198	false
2020-01-24T00:00Z	3.197	false
2020-01-23T23:45Z	3.194	false
2020-01-23T23:30Z	3.199	false
2020-01-23T23:15Z	3.202	false
2020-01-23T23:00Z	3.198	false
2020-01-23T22:45Z	3.2	false
2020-01-23T22:30Z	3.2	false
2020-01-23T22:15Z	3.208	false
2020-01-23T22:00Z	3.214	false
2020-01-23T21:45Z	3.217	false
2020-01-23T21:30Z	3.222	false
2020-01-23T21:15Z	3.228	false
2020-01-23T21:00Z	3.241	false
2020-01-23T20:45Z	3.253	false
2020-01-23T20:30Z	3.27	false
2020-01-23T20:15Z	3.281	false
2020-01-23T20:00Z	3.289	false
2020-01-23T19:45Z	3.288	false
2020-01-23T19:30Z	3.295	false
2020-01-23T19:15Z	3.289	false
2020-01-23T19:00Z	3.292	false
2020-01-23T18:45Z	3.298	false
2020-01-23T18:30Z	3.289	false
2020-01-23T18:15Z	3.289	false
2020-01-23T18:00Z	3.288	false
2020-01-23T17:45Z	3.28	false
2020-01-23T17:30Z	3.277	false
2020-01-23T17:15Z	3.27	false
2020-01-23T17:00Z	3.262	false
2020-01-23T16:45Z	3.25	false
2020-01-23T16:30Z	3.243	false
2020-01-23T16:15Z	3.233	false
2020-01-23T16:00Z	3.232	false
2020-01-23T15:45Z	3.234	false
2020-01-23T15:30Z	3.234	false
2020-01-23T15:15Z	3.231	false
2020-01-23T15:00Z	3.22	false
2020-01-23T14:45Z	3.236	false
2020-01-23T14:30Z	3.238	false
2020-01-23T14:15Z	3.237	false
2020-01-23T14:00Z	3.242	false
2020-01-23T13:45Z	3.252	false
2020-01-23T13:30Z	3.261	false
2020-01-23T13:15Z	3.269	false
2020-01-23T13:00Z	3.276	false
2020-01-23T12:45Z	3.287	false
2020-01-23T12:30Z	3.288	false
2020-01-23T12:15Z	3.288	false
2020-01-23T12:00Z	3.289	false
2020-01-23T11:45Z	3.294	false
2020-01-23T11:30Z	3.292	false
2020-01-23T11:15Z	3.294	false
2020-01-23T11:00Z	3.303	false
2020-01-23T10:45Z	3.297	false
2020-01-23T10:30Z	3.301	false
2020-01-23T10:15Z	3.304	false
2020-01-23T10:00Z	3.308	false
2020-01-23T09:45Z	3.31	false
2020-01-23T09:30Z	3.311	false
2020-01-23T09:15Z	3.317	false
2020-01-23T09:00Z	3.316	false
2020-01-23T08:45Z	3.319	false
2020-01-23T08:30Z	3.311	false
2020-01-23T08:15Z	3.321	false
2020-01-23T08:00Z	3.323	false
2020-01-23T07:45Z	3.326	false
2020-01-23T07:30Z	3.325	false
2020-01-23T07:15Z	3.329	false
2020-01-23T07:00Z	3.33	false
2020-01-23T06:45Z	3.327	false
2020-01-23T06:30Z	3.332	false
2020-01-23T06:15Z	3.335	false
2020-01-23T06:00Z	3.33	false
2020-01-23T05:45Z	3.33	false
2020-01-23T05:30Z	3.33	false
2020-01-23T05:15Z	3.328	false
2020-01-23T05:00Z	3.334	false
2020-01-23T04:45Z	3.33	false
2020-01-23T04:30Z	3.332	false
2020-01-23T04:15Z	3.326	false
2020-01-23T04:00Z	3.333	false
2020-01-23T03:45Z	3.328	false
2020-01-23T03:30Z	3.332	false
2020-01-23T03:15Z	3.33	false
2020-01-23T03:00Z	3.333	false
2020-01-23T02:45Z	3.326	false
2020-01-23T02:30Z	3.33	false
2020-01-23T02:15Z	3.335	false
2020-01-23T02:00Z	3.328	false
2020-01-23T01:45Z	3.327	false
2020-01-23T01:30Z	3.322	false
2020-01-23T01:15Z	3.322	false
2020-01-23T01:00Z	3.315	false
2020-01-23T00:45Z	3.316	false
2020-01-23T00:30Z	3.313	false
2020-01-23T00:15Z	3.31	false
2020-01-23T00:00Z	3.31	false
2020-01-22T23:45Z	3.301	false
2020-01-22T23:30Z	3.297	false
2020-01-22T23:15Z	3.297	false
2020-01-22T23:00Z	3.317	false
2020-01-22T22:45Z	3.346	false
2020-01-22T22:30Z	3.362	false
2020-01-22T22:15Z	3.373	false
2020-01-22T22:00Z	3.387	false
2020-01-22T21:45Z	3.393	false
2020-01-22T21:30Z	3.401	false
2020-01-22T21:15Z	3.412	false
2020-01-22T21:00Z	3.43	false
2020-01-22T20:45Z	3.448	false
2020-01-22T20:30Z	3.448	false
2020-01-22T20:15Z	3.455	false
2020-01-22T20:00Z	3.455	false
2020-01-22T19:45Z	3.453	false
2020-01-22T19:30Z	3.451	false
2020-01-22T19:15Z	3.45	false
2020-01-22T19:00Z	3.458	false
2020-01-22T18:45Z	3.446	false
2020-01-22T18:30Z	3.442	false
2020-01-22T18:15Z	3.439	false
2020-01-22T18:00Z	3.431	false
2020-01-22T17:45Z	3.432	false
2020-01-22T17:30Z	3.424	false
2020-01-22T17:15Z	3.413	false
2020-01-22T17:00Z	3.403	false
2020-01-22T16:45Z	3.39	false
2020-01-22T16:30Z	3.378	false
2020-01-22T16:15Z	3.368	false
2020-01-22T16:00Z	3.361	false
2020-01-22T15:45Z	3.364	false
2020-01-22T15:30Z	3.362	false
2020-01-22T15:15Z	3.344	false
2020-01-22T15:00Z	3.346	false
2020-01-22T14:45Z	3.365	false
2020-01-22T14:30Z	3.369	false
2020-01-22T14:15Z	3.363	false
2020-01-22T14:00Z	3.364	false
2020-01-22T13:45Z	3.364	false
2020-01-22T13:30Z	3.365	false
2020-01-22T13:15Z	3.37	false
2020-01-22T13:00Z	3.373	false
2020-01-22T12:45Z	3.377	false
2020-01-22T12:30Z	3.379	false
2020-01-22T12:15Z	3.388	false
2020-01-22T12:00Z	3.391	false
2020-01-22T11:45Z	3.385	false
2020-01-22T11:30Z	3.383	false
2020-01-22T11:15Z	3.369	false
2020-01-22T11:00Z	3.374	false
2020-01-22T10:45Z	3.378	false
2020-01-22T10:30Z	3.384	false
2020-01-22T10:15Z	3.383	false
2020-01-22T10:00Z	3.383	false
2020-01-22T09:45Z	3.389	false
2020-01-22T09:30Z	3.391	false
2020-01-22T09:15Z	3.388	false
2020-01-22T09:00Z	3.389	false
2020-01-22T08:45Z	3.39	false
2020-01-22T08:30Z	3.388	false
2020-01-22T08:15Z	3.39	false
2020-01-22T08:00Z	3.391	false
2020-01-22T07:45Z	3.395	false
2020-01-22T07:30Z	3.397	false
2020-01-22T07:15Z	3.401	false
2020-01-22T07:00Z	3.398	false
2020-01-22T06:45Z	3.394	false
2020-01-22T06:30Z	3.395	false
2020-01-22T06:15Z	3.396	false
2020-01-22T06:00Z	3.401	false
2020-01-22T05:45Z	3.402	false
2020-01-22T05:30Z	3.402	false
2020-01-22T05:15Z	3.401	false
2020-01-22T05:00Z	3.402	false
2020-01-22T04:45Z	3.399	false
2020-01-22T04:30Z	3.402	false
2020-01-22T04:15Z	3.402	false
2020-01-22T04:00Z	3.402	false
2020-01-22T03:45Z	3.404	false
2020-01-22T03:30Z	3.406	false
2020-01-22T03:15Z	3.409	false
2020-01-22T03:00Z	3.405	false
2020-01-22T02:45Z	3.407	false
2020-01-22T02:30Z	3.408	false
2020-01-22T02:15Z	3.412	false
2020-01-22T02:00Z	3.411	false
2020-01-22T01:45Z	3.408	false
2020-01-22T01:30Z	3.414	false
2020-01-22T01:15Z	3.408	false
2020-01-22T01:00Z	3.414	false
2020-01-22T00:45Z	3.417	false
2020-01-22T00:30Z	3.427	false
2020-01-22T00:15Z	3.433	false
2020-01-22T00:00Z	3.442	false
2020-01-21T23:45Z	3.447	false
2020-01-21T23:30Z	3.448	false
2020-01-21T23:15Z	3.454	false
2020-01-21T23:00Z	3.463	false
2020-01-21T22:45Z	3.474	false
2020-01-21T22:30Z	3.489	false
2020-01-21T22:15Z	3.507	false
2020-01-21T22:00Z	3.524	false
2020-01-21T21:45Z	3.538	false
2020-01-21T21:30Z	3.542	false
2020-01-21T21:15Z	3.542	false
2020-01-21T21:00Z	3.551	false
2020-01-21T20:45Z	3.545	false
2020-01-21T20:30Z	3.546	false
2020-01-21T20:15Z	3.545	false
2020-01-21T20:00Z	3.546	false
2020-01-21T19:45Z	3.553	false
2020-01-21T19:30Z	3.549	false
2020-01-21T19:15Z	3.545	false
2020-01-21T19:00Z	3.54	false
2020-01-21T18:45Z	3.546	false
2020-01-21T18:30Z	3.543	false
2020-01-21T18:15Z	3.541	false
2020-01-21T18:00Z	3.538	false
2020-01-21T17:45Z	3.522	false
2020-01-21T17:30Z	3.528	false
2020-01-21T17:15Z	3.518	false
2020-01-21T17:00Z	3.514	false
2020-01-21T16:45Z	3.501	false
2020-01-21T16:30Z	3.492	false
2020-01-21T16:15Z	3.481	false
2020-01-21T16:00Z	3.462	false
2020-01-21T15:45Z	3.463	false
2020-01-21T15:30Z	3.465	false
2020-01-21T15:15Z	3.467	false
2020-01-21T15:00Z	3.47	false
2020-01-21T14:45Z	3.469	false
2020-01-21T14:30Z	3.468	false
2020-01-21T14:15Z	3.481	false
2020-01-21T14:00Z	3.481	false
2020-01-21T13:45Z	3.473	false
2020-01-21T13:30Z	3.48	false
2020-01-21T13:15Z	3.477	false
2020-01-21T13:00Z	3.488	false
2020-01-21T12:45Z	3.499	false
2020-01-21T12:30Z	3.505	false
2020-01-21T12:15Z	3.503	false
2020-01-21T12:00Z	3.51	false
2020-01-21T11:45Z	3.521	false
2020-01-21T11:30Z	3.527	false
2020-01-21T11:15Z	3.537	false
2020-01-21T11:00Z	3.538	false
2020-01-21T10:45Z	3.537	false
2020-01-21T10:30Z	3.54	false
2020-01-21T10:15Z	3.541	false
2020-01-21T10:00Z	3.546	false
2020-01-21T09:45Z	3.547	false
2020-01-21T09:30Z	3.548	false
2020-01-21T09:15Z	3.548	false
2020-01-21T09:00Z	3.546	false
2020-01-21T08:45Z	3.549	false
2020-01-21T08:30Z	3.552	false
2020-01-21T08:15Z	3.552	false
2020-01-21T08:00Z	3.553	false
2020-01-21T07:45Z	3.553	false
2020-01-21T07:30Z	3.55	false
2020-01-21T07:15Z	3.557	false
2020-01-21T07:00Z	3.559	false
2020-01-21T06:45Z	3.554	false
2020-01-21T06:30Z	3.555	false
2020-01-21T06:15Z	3.553	false
2020-01-21T06:00Z	3.552	false
2020-01-21T05:45Z	3.55	false
2020-01-21T05:30Z	3.555	false
2020-01-21T05:15Z	3.552	false
2020-01-21T05:00Z	3.547	false
2020-01-21T04:45Z	3.547	false
2020-01-21T04:30Z	3.543	false
2020-01-21T04:15Z	3.546	false
2020-01-21T04:00Z	3.544	false
2020-01-21T04:00Z	3.544	false
2020-01-21T03:45Z	3.546	false
2020-01-21T03:45Z	3.546	false
2020-01-21T03:30Z	3.545	false
2020-01-21T03:30Z	3.545	false
2020-01-21T03:15Z	3.546	false
2020-01-21T03:15Z	3.546	false
2020-01-21T03:00Z	3.55	false
2020-01-21T02:45Z	3.554	false
2020-01-21T02:30Z	3.55	false
2020-01-21T02:15Z	3.561	false
2020-01-21T02:00Z	3.564	false
2020-01-21T01:45Z	3.566	false
2020-01-21T01:30Z	3.569	false
2020-01-21T01:15Z	3.577	false
2020-01-21T01:00Z	3.584	false
2020-01-21T00:45Z	3.584	false
2020-01-21T00:30Z	3.585	false
2020-01-21T00:15Z	3.59	false
2020-01-21T00:00Z	3.585	false
2020-01-20T23:45Z	3.589	false
2020-01-20T23:30Z	3.583	false
2020-01-20T23:15Z	3.591	false
2020-01-20T23:00Z	3.588	false
2020-01-20T22:45Z	3.593	false
2020-01-20T22:30Z	3.598	false
2020-01-20T22:15Z	3.598	false
2020-01-20T22:00Z	3.608	false
2020-01-20T21:45Z	3.601	false
2020-01-20T21:30Z	3.61	false
2020-01-20T21:15Z	3.614	false
2020-01-20T21:00Z	3.623	false
2020-01-20T20:45Z	3.628	false
2020-01-20T20:30Z	3.631	false
2020-01-20T20:15Z	3.638	false
2020-01-20T20:00Z	3.647	false
2020-01-20T19:45Z	3.648	false
2020-01-20T19:30Z	3.649	false
2020-01-20T19:15Z	3.659	false
2020-01-20T19:00Z	3.653	false
2020-01-20T18:45Z	3.656	false
2020-01-20T18:30Z	3.66	false
2020-01-20T18:15Z	3.653	false
2020-01-20T18:00Z	3.659	false
2020-01-20T17:45Z	3.662	false
2020-01-20T17:30Z	3.663	false
2020-01-20T17:15Z	3.671	false
2020-01-20T17:00Z	3.665	false
2020-01-20T16:45Z	3.67	false
2020-01-20T16:30Z	3.665	false
2020-01-20T16:15Z	3.669	false
2020-01-20T16:00Z	3.676	false
2020-01-20T15:45Z	3.675	false
2020-01-20T15:30Z	3.68	false
2020-01-20T15:15Z	3.686	false
2020-01-20T15:00Z	3.692	false
2020-01-20T14:45Z	3.686	false
2020-01-20T14:30Z	3.69	false
2020-01-20T14:15Z	3.692	false
2020-01-20T14:00Z	3.691	false
2020-01-20T13:45Z	3.698	false
2020-01-20T13:30Z	3.699	false
2020-01-20T13:15Z	3.702	false
2020-01-20T13:00Z	3.699	false
2020-01-20T12:45Z	3.697	false
2020-01-20T12:30Z	3.703	false
2020-01-20T12:15Z	3.703	false
2020-01-20T12:00Z	3.7	false
2020-01-20T12:00Z	3.7	false
2020-01-20T11:45Z	3.705	false
2020-01-20T11:45Z	3.705	false
2020-01-20T11:30Z	3.706	false
2020-01-20T11:30Z	3.706	false
2020-01-20T11:15Z	3.709	false
2020-01-20T11:15Z	3.709	false
2020-01-20T11:00Z	3.714	false
2020-01-20T10:45Z	3.711	false
2020-01-20T10:30Z	3.719	false
2020-01-20T10:15Z	3.718	false
2020-01-20T10:00Z	3.721	false
2020-01-20T09:45Z	3.722	false
2020-01-20T09:30Z	3.721	false
2020-01-20T09:15Z	3.722	false
2020-01-20T09:00Z	3.722	false
2020-01-20T08:45Z	3.725	false
2020-01-20T08:30Z	3.722	false
2020-01-20T08:15Z	3.722	false
2020-01-20T08:00Z	3.725	false
2020-01-20T07:45Z	3.726	false
2020-01-20T07:30Z	3.718	false
2020-01-20T07:15Z	3.729	false
2020-01-20T07:00Z	3.723	false
2020-01-20T06:45Z	3.726	false
2020-01-20T06:30Z	3.727	false
2020-01-20T06:15Z	3.728	false
2020-01-20T06:00Z	3.725	false
2020-01-20T05:45Z	3.727	false
2020-01-20T05:30Z	3.719	false
2020-01-20T05:15Z	3.729	false
2020-01-20T05:00Z	3.724	false
2020-01-20T04:45Z	3.731	false
2020-01-20T04:30Z	3.728	false
2020-01-20T04:15Z	3.734	false
2020-01-20T04:00Z	3.742	false
2020-01-20T03:45Z	3.745	false
2020-01-20T03:30Z	3.741	false
2020-01-20T03:15Z	3.744	false
2020-01-20T03:00Z	3.749	false
2020-01-20T02:45Z	3.754	false
2020-01-20T02:30Z	3.757	false
2020-01-20T02:15Z	3.758	false
2020-01-20T02:00Z	3.759	false
2020-01-20T01:45Z	3.767	false
2020-01-20T01:30Z	3.77	false
2020-01-20T01:15Z	3.77	false
2020-01-20T01:00Z	3.763	false
2020-01-20T00:45Z	3.768	false
2020-01-20T00:30Z	3.773	false
2020-01-20T00:15Z	3.775	false
2020-01-20T00:00Z	3.778	false
2020-01-19T23:45Z	3.772	false
2020-01-19T23:30Z	3.783	false
2020-01-19T23:15Z	3.78	false

Forecast data

Key information

• Station name: Chertsey Lock (downstream)
• Station ID: 7215
• River name: River Thames
• Typical range: 2.62m to 3.63m
• Highest level on record: 4.59m on 11 February 2014
• Site datum: 7.63mAOD (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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