River level River Allen at Idless Dam

Check for flood warnings in this area

Latest recorded level 0.40m at 11:15am Saturday 29 February 2020.

River levels at this location in the last 5 days

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• Measured level
• When the water level reaches 1.10m 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
2020-02-29T11:15Z	0.401	false
2020-02-29T11:00Z	0.406	false
2020-02-29T10:45Z	0.403	false
2020-02-29T10:30Z	0.408	false
2020-02-29T10:15Z	0.407	false
2020-02-29T10:00Z	0.406	false
2020-02-29T09:45Z	0.425	false
2020-02-29T09:30Z	0.418	false
2020-02-29T09:15Z	0.427	false
2020-02-29T09:00Z	0.437	false
2020-02-29T08:45Z	0.438	false
2020-02-29T08:30Z	0.442	false
2020-02-29T08:15Z	0.448	false
2020-02-29T08:00Z	0.461	false
2020-02-29T07:45Z	0.484	false
2020-02-29T07:30Z	0.491	false
2020-02-29T07:15Z	0.528	false
2020-02-29T07:00Z	0.561	false
2020-02-29T06:45Z	0.594	false
2020-02-29T06:30Z	0.621	false
2020-02-29T06:15Z	0.627	false
2020-02-29T06:00Z	0.647	false
2020-02-29T05:45Z	0.665	false
2020-02-29T05:30Z	0.663	false
2020-02-29T05:15Z	0.709	false
2020-02-29T05:00Z	0.736	false
2020-02-29T04:45Z	0.718	false
2020-02-29T04:30Z	0.717	false
2020-02-29T04:15Z	0.703	false
2020-02-29T04:00Z	0.715	false
2020-02-29T03:45Z	0.718	false
2020-02-29T03:30Z	0.711	false
2020-02-29T03:15Z	0.709	false
2020-02-29T03:00Z	0.706	false
2020-02-29T02:45Z	0.706	false
2020-02-29T02:30Z	0.682	false
2020-02-29T02:15Z	0.657	false
2020-02-29T02:00Z	0.643	false
2020-02-29T01:45Z	0.648	false
2020-02-29T01:30Z	0.592	false
2020-02-29T01:15Z	0.594	false
2020-02-29T01:00Z	0.555	false
2020-02-29T00:45Z	0.562	false
2020-02-29T00:30Z	0.54	false
2020-02-29T00:15Z	0.499	false
2020-02-29T00:00Z	0.476	false
2020-02-28T23:45Z	0.452	false
2020-02-28T23:30Z	0.443	false
2020-02-28T23:15Z	0.431	false
2020-02-28T23:00Z	0.413	false
2020-02-28T22:45Z	0.396	false
2020-02-28T22:30Z	0.386	false
2020-02-28T22:15Z	0.373	false
2020-02-28T22:00Z	0.361	false
2020-02-28T21:45Z	0.355	false
2020-02-28T21:30Z	0.338	false
2020-02-28T21:15Z	0.341	false
2020-02-28T21:00Z	0.341	false
2020-02-28T20:45Z	0.328	false
2020-02-28T20:30Z	0.331	false
2020-02-28T20:15Z	0.327	false
2020-02-28T20:00Z	0.328	false
2020-02-28T19:45Z	0.322	false
2020-02-28T19:30Z	0.321	false
2020-02-28T19:15Z	0.322	false
2020-02-28T19:00Z	0.322	false
2020-02-28T18:45Z	0.319	false
2020-02-28T18:30Z	0.321	false
2020-02-28T18:15Z	0.318	false
2020-02-28T18:00Z	0.322	false
2020-02-28T17:45Z	0.319	false
2020-02-28T17:30Z	0.325	false
2020-02-28T17:15Z	0.326	false
2020-02-28T17:00Z	0.325	false
2020-02-28T16:45Z	0.32	false
2020-02-28T16:30Z	0.324	false
2020-02-28T16:15Z	0.325	false
2020-02-28T16:00Z	0.33	false
2020-02-28T15:45Z	0.336	false
2020-02-28T15:30Z	0.339	false
2020-02-28T15:15Z	0.341	false
2020-02-28T15:00Z	0.344	false
2020-02-28T14:45Z	0.354	false
2020-02-28T14:30Z	0.352	false
2020-02-28T14:15Z	0.356	false
2020-02-28T14:00Z	0.374	false
2020-02-28T13:45Z	0.37	false
2020-02-28T13:30Z	0.381	false
2020-02-28T13:15Z	0.391	false
2020-02-28T13:00Z	0.399	false
2020-02-28T12:45Z	0.398	false
2020-02-28T12:30Z	0.408	false
2020-02-28T12:15Z	0.41	false
2020-02-28T12:00Z	0.406	false
2020-02-28T11:45Z	0.396	false
2020-02-28T11:30Z	0.397	false
2020-02-28T11:15Z	0.405	false
2020-02-28T11:00Z	0.406	false
2020-02-28T10:45Z	0.406	false
2020-02-28T10:30Z	0.395	false
2020-02-28T10:15Z	0.411	false
2020-02-28T10:00Z	0.407	false
2020-02-28T09:45Z	0.405	false
2020-02-28T09:30Z	0.412	false
2020-02-28T09:15Z	0.418	false
2020-02-28T09:00Z	0.421	false
2020-02-28T08:45Z	0.397	false
2020-02-28T08:30Z	0.394	false
2020-02-28T08:15Z	0.387	false
2020-02-28T08:00Z	0.374	false
2020-02-28T07:45Z	0.369	false
2020-02-28T07:30Z	0.362	false
2020-02-28T07:15Z	0.355	false
2020-02-28T07:00Z	0.348	false
2020-02-28T06:45Z	0.345	false
2020-02-28T06:30Z	0.34	false
2020-02-28T06:15Z	0.338	false
2020-02-28T06:00Z	0.326	false
2020-02-28T05:45Z	0.318	false
2020-02-28T05:30Z	0.312	false
2020-02-28T05:15Z	0.308	false
2020-02-28T05:00Z	0.302	false
2020-02-28T04:45Z	0.297	false
2020-02-28T04:30Z	0.29	false
2020-02-28T04:15Z	0.288	false
2020-02-28T04:00Z	0.28	false
2020-02-28T03:45Z	0.288	false
2020-02-28T03:30Z	0.284	false
2020-02-28T03:15Z	0.279	false
2020-02-28T03:00Z	0.28	false
2020-02-28T02:45Z	0.279	false
2020-02-28T02:30Z	0.28	false
2020-02-28T02:15Z	0.275	false
2020-02-28T02:00Z	0.275	false
2020-02-28T01:45Z	0.279	false
2020-02-28T01:30Z	0.275	false
2020-02-28T01:15Z	0.277	false
2020-02-28T01:00Z	0.275	false
2020-02-28T00:45Z	0.275	false
2020-02-28T00:30Z	0.276	false
2020-02-28T00:15Z	0.276	false
2020-02-28T00:00Z	0.273	false
2020-02-27T23:45Z	0.274	false
2020-02-27T23:30Z	0.277	false
2020-02-27T23:15Z	0.277	false
2020-02-27T23:00Z	0.285	false
2020-02-27T22:45Z	0.277	false
2020-02-27T22:30Z	0.276	false
2020-02-27T22:15Z	0.275	false
2020-02-27T22:00Z	0.278	false
2020-02-27T21:45Z	0.279	false
2020-02-27T21:30Z	0.276	false
2020-02-27T21:15Z	0.277	false
2020-02-27T21:00Z	0.277	false
2020-02-27T20:45Z	0.277	false
2020-02-27T20:30Z	0.281	false
2020-02-27T20:15Z	0.272	false
2020-02-27T20:00Z	0.278	false
2020-02-27T19:45Z	0.274	false
2020-02-27T19:30Z	0.27	false
2020-02-27T19:15Z	0.276	false
2020-02-27T19:00Z	0.275	false
2020-02-27T18:45Z	0.281	false
2020-02-27T18:30Z	0.278	false
2020-02-27T18:15Z	0.279	false
2020-02-27T18:00Z	0.284	false
2020-02-27T17:45Z	0.279	false
2020-02-27T17:30Z	0.278	false
2020-02-27T17:15Z	0.283	false
2020-02-27T17:00Z	0.283	false
2020-02-27T16:45Z	0.281	false
2020-02-27T16:30Z	0.284	false
2020-02-27T16:15Z	0.28	false
2020-02-27T16:00Z	0.279	false
2020-02-27T15:45Z	0.281	false
2020-02-27T15:30Z	0.283	false
2020-02-27T15:15Z	0.288	false
2020-02-27T15:00Z	0.282	false
2020-02-27T14:45Z	0.284	false
2020-02-27T14:30Z	0.285	false
2020-02-27T14:15Z	0.285	false
2020-02-27T14:00Z	0.289	false
2020-02-27T13:45Z	0.287	false
2020-02-27T13:30Z	0.292	false
2020-02-27T13:15Z	0.292	false
2020-02-27T13:00Z	0.288	false
2020-02-27T12:45Z	0.288	false
2020-02-27T12:30Z	0.3	false
2020-02-27T12:15Z	0.298	false
2020-02-27T12:00Z	0.303	false
2020-02-27T11:45Z	0.302	false
2020-02-27T11:30Z	0.304	false
2020-02-27T11:15Z	0.302	false
2020-02-27T11:00Z	0.304	false
2020-02-27T10:45Z	0.309	false
2020-02-27T10:30Z	0.314	false
2020-02-27T10:15Z	0.319	false
2020-02-27T10:00Z	0.316	false
2020-02-27T09:45Z	0.318	false
2020-02-27T09:30Z	0.323	false
2020-02-27T09:15Z	0.325	false
2020-02-27T09:00Z	0.336	false
2020-02-27T08:45Z	0.344	false
2020-02-27T08:30Z	0.349	false
2020-02-27T08:15Z	0.36	false
2020-02-27T08:00Z	0.364	false
2020-02-27T07:45Z	0.367	false
2020-02-27T07:30Z	0.404	false
2020-02-27T07:15Z	0.399	false
2020-02-27T07:00Z	0.413	false
2020-02-27T06:45Z	0.429	false
2020-02-27T06:30Z	0.467	false
2020-02-27T06:15Z	0.479	false
2020-02-27T06:00Z	0.499	false
2020-02-27T05:45Z	0.505	false
2020-02-27T05:30Z	0.527	false
2020-02-27T05:15Z	0.54	false
2020-02-27T05:00Z	0.562	false
2020-02-27T04:45Z	0.569	false
2020-02-27T04:30Z	0.599	false
2020-02-27T04:15Z	0.594	false
2020-02-27T04:00Z	0.608	false
2020-02-27T03:45Z	0.591	false
2020-02-27T03:30Z	0.569	false
2020-02-27T03:15Z	0.578	false
2020-02-27T03:00Z	0.548	false
2020-02-27T02:45Z	0.524	false
2020-02-27T02:30Z	0.49	false
2020-02-27T02:15Z	0.457	false
2020-02-27T02:00Z	0.452	false
2020-02-27T01:45Z	0.418	false
2020-02-27T01:30Z	0.388	false
2020-02-27T01:15Z	0.362	false
2020-02-27T01:00Z	0.342	false
2020-02-27T00:45Z	0.331	false
2020-02-27T00:30Z	0.312	false
2020-02-27T00:15Z	0.298	false
2020-02-27T00:00Z	0.289	false
2020-02-26T23:45Z	0.28	false
2020-02-26T23:30Z	0.264	false
2020-02-26T23:15Z	0.261	false
2020-02-26T23:00Z	0.261	false
2020-02-26T22:45Z	0.259	false
2020-02-26T22:30Z	0.259	false
2020-02-26T22:15Z	0.256	false
2020-02-26T22:00Z	0.253	false
2020-02-26T21:45Z	0.259	false
2020-02-26T21:30Z	0.257	false
2020-02-26T21:15Z	0.256	false
2020-02-26T21:00Z	0.254	false
2020-02-26T20:45Z	0.254	false
2020-02-26T20:30Z	0.253	false
2020-02-26T20:15Z	0.253	false
2020-02-26T20:00Z	0.251	false
2020-02-26T19:45Z	0.255	false
2020-02-26T19:30Z	0.253	false
2020-02-26T19:15Z	0.254	false
2020-02-26T19:00Z	0.254	false
2020-02-26T18:45Z	0.253	false
2020-02-26T18:30Z	0.251	false
2020-02-26T18:15Z	0.253	false
2020-02-26T18:00Z	0.257	false
2020-02-26T17:45Z	0.255	false
2020-02-26T17:30Z	0.254	false
2020-02-26T17:15Z	0.255	false
2020-02-26T17:00Z	0.253	false
2020-02-26T16:45Z	0.252	false
2020-02-26T16:30Z	0.257	false
2020-02-26T16:15Z	0.256	false
2020-02-26T16:00Z	0.257	false
2020-02-26T15:45Z	0.257	false
2020-02-26T15:30Z	0.254	false
2020-02-26T15:15Z	0.258	false
2020-02-26T15:00Z	0.256	false
2020-02-26T14:45Z	0.256	false
2020-02-26T14:30Z	0.255	false
2020-02-26T14:15Z	0.255	false
2020-02-26T14:00Z	0.253	false
2020-02-26T13:45Z	0.256	false
2020-02-26T13:30Z	0.254	false
2020-02-26T13:15Z	0.26	false
2020-02-26T13:00Z	0.261	false
2020-02-26T12:45Z	0.26	false
2020-02-26T12:30Z	0.26	false
2020-02-26T12:15Z	0.257	false
2020-02-26T12:00Z	0.259	false
2020-02-26T11:45Z	0.26	false
2020-02-26T11:30Z	0.26	false
2020-02-26T11:15Z	0.257	false
2020-02-26T11:00Z	0.262	false
2020-02-26T10:45Z	0.26	false
2020-02-26T10:30Z	0.259	false
2020-02-26T10:15Z	0.26	false
2020-02-26T10:00Z	0.263	false
2020-02-26T09:45Z	0.265	false
2020-02-26T09:30Z	0.26	false
2020-02-26T09:15Z	0.26	false
2020-02-26T09:00Z	0.262	false
2020-02-26T08:45Z	0.266	false
2020-02-26T08:30Z	0.262	false
2020-02-26T08:15Z	0.262	false
2020-02-26T08:00Z	0.261	false
2020-02-26T07:45Z	0.265	false
2020-02-26T07:30Z	0.264	false
2020-02-26T07:15Z	0.266	false
2020-02-26T07:00Z	0.265	false
2020-02-26T06:45Z	0.266	false
2020-02-26T06:30Z	0.266	false
2020-02-26T06:15Z	0.268	false
2020-02-26T06:00Z	0.268	false
2020-02-26T05:45Z	0.264	false
2020-02-26T05:30Z	0.271	false
2020-02-26T05:15Z	0.268	false
2020-02-26T05:00Z	0.269	false
2020-02-26T04:45Z	0.266	false
2020-02-26T04:30Z	0.27	false
2020-02-26T04:15Z	0.269	false
2020-02-26T04:00Z	0.269	false
2020-02-26T03:45Z	0.27	false
2020-02-26T03:30Z	0.267	false
2020-02-26T03:15Z	0.272	false
2020-02-26T03:00Z	0.271	false
2020-02-26T02:45Z	0.275	false
2020-02-26T02:30Z	0.276	false
2020-02-26T02:15Z	0.275	false
2020-02-26T02:00Z	0.273	false
2020-02-26T01:45Z	0.274	false
2020-02-26T01:30Z	0.276	false
2020-02-26T01:15Z	0.279	false
2020-02-26T01:00Z	0.273	false
2020-02-26T00:45Z	0.271	false
2020-02-26T00:30Z	0.274	false
2020-02-26T00:15Z	0.27	false
2020-02-26T00:00Z	0.276	false
2020-02-25T23:45Z	0.276	false
2020-02-25T23:30Z	0.271	false
2020-02-25T23:15Z	0.275	false
2020-02-25T23:00Z	0.269	false
2020-02-25T22:45Z	0.271	false
2020-02-25T22:30Z	0.268	false
2020-02-25T22:15Z	0.27	false
2020-02-25T22:00Z	0.269	false
2020-02-25T21:45Z	0.276	false
2020-02-25T21:30Z	0.273	false
2020-02-25T21:15Z	0.279	false
2020-02-25T21:00Z	0.276	false
2020-02-25T20:45Z	0.278	false
2020-02-25T20:30Z	0.277	false
2020-02-25T20:15Z	0.278	false
2020-02-25T20:00Z	0.284	false
2020-02-25T19:45Z	0.28	false
2020-02-25T19:30Z	0.281	false
2020-02-25T19:15Z	0.28	false
2020-02-25T19:00Z	0.284	false
2020-02-25T18:45Z	0.282	false
2020-02-25T18:30Z	0.286	false
2020-02-25T18:15Z	0.28	false
2020-02-25T18:00Z	0.289	false
2020-02-25T17:45Z	0.287	false
2020-02-25T17:30Z	0.287	false
2020-02-25T17:15Z	0.291	false
2020-02-25T17:00Z	0.288	false
2020-02-25T16:45Z	0.295	false
2020-02-25T16:30Z	0.294	false
2020-02-25T16:15Z	0.296	false
2020-02-25T16:00Z	0.294	false
2020-02-25T15:45Z	0.299	false
2020-02-25T15:30Z	0.297	false
2020-02-25T15:15Z	0.303	false
2020-02-25T15:00Z	0.306	false
2020-02-25T14:45Z	0.294	false
2020-02-25T14:30Z	0.301	false
2020-02-25T14:15Z	0.303	false
2020-02-25T14:00Z	0.3	false
2020-02-25T13:45Z	0.298	false
2020-02-25T13:30Z	0.301	false
2020-02-25T13:15Z	0.3	false
2020-02-25T13:00Z	0.301	false
2020-02-25T12:45Z	0.295	false
2020-02-25T12:30Z	0.294	false
2020-02-25T12:15Z	0.289	false
2020-02-25T12:00Z	0.286	false
2020-02-25T11:45Z	0.285	false
2020-02-25T11:30Z	0.281	false
2020-02-25T11:15Z	0.28	false
2020-02-25T11:00Z	0.277	false
2020-02-25T10:45Z	0.283	false
2020-02-25T10:30Z	0.28	false
2020-02-25T10:15Z	0.28	false
2020-02-25T10:00Z	0.288	false
2020-02-25T09:45Z	0.281	false
2020-02-25T09:30Z	0.286	false
2020-02-25T09:15Z	0.288	false
2020-02-25T09:00Z	0.287	false
2020-02-25T08:45Z	0.287	false
2020-02-25T08:30Z	0.299	false
2020-02-25T08:15Z	0.285	false
2020-02-25T08:00Z	0.289	false
2020-02-25T07:45Z	0.288	false
2020-02-25T07:30Z	0.287	false
2020-02-25T07:15Z	0.285	false
2020-02-25T07:00Z	0.286	false
2020-02-25T06:45Z	0.286	false
2020-02-25T06:30Z	0.29	false
2020-02-25T06:15Z	0.285	false
2020-02-25T06:00Z	0.285	false
2020-02-25T05:45Z	0.284	false
2020-02-25T05:30Z	0.288	false
2020-02-25T05:15Z	0.286	false
2020-02-25T05:00Z	0.28	false
2020-02-25T04:45Z	0.274	false
2020-02-25T04:30Z	0.278	false
2020-02-25T04:15Z	0.276	false
2020-02-25T04:00Z	0.28	false
2020-02-25T03:45Z	0.277	false
2020-02-25T03:30Z	0.279	false
2020-02-25T03:15Z	0.276	false
2020-02-25T03:00Z	0.279	false
2020-02-25T02:45Z	0.278	false
2020-02-25T02:30Z	0.276	false
2020-02-25T02:15Z	0.278	false
2020-02-25T02:00Z	0.282	false
2020-02-25T01:45Z	0.283	false
2020-02-25T01:30Z	0.276	false
2020-02-25T01:15Z	0.28	false
2020-02-25T01:00Z	0.281	false
2020-02-25T00:45Z	0.275	false
2020-02-25T00:30Z	0.277	false
2020-02-25T00:15Z	0.281	false
2020-02-25T00:00Z	0.281	false
2020-02-24T23:45Z	0.282	false
2020-02-24T23:30Z	0.284	false
2020-02-24T23:15Z	0.282	false
2020-02-24T23:00Z	0.282	false
2020-02-24T22:45Z	0.282	false
2020-02-24T22:30Z	0.285	false
2020-02-24T22:15Z	0.283	false
2020-02-24T22:00Z	0.287	false
2020-02-24T21:45Z	0.287	false
2020-02-24T21:30Z	0.285	false
2020-02-24T21:15Z	0.285	false
2020-02-24T21:00Z	0.287	false
2020-02-24T20:45Z	0.291	false
2020-02-24T20:30Z	0.286	false
2020-02-24T20:15Z	0.293	false
2020-02-24T20:00Z	0.293	false
2020-02-24T19:45Z	0.294	false
2020-02-24T19:30Z	0.294	false
2020-02-24T19:15Z	0.292	false
2020-02-24T19:00Z	0.298	false
2020-02-24T18:45Z	0.293	false
2020-02-24T18:30Z	0.304	false
2020-02-24T18:15Z	0.302	false
2020-02-24T18:00Z	0.306	false
2020-02-24T17:45Z	0.302	false
2020-02-24T17:30Z	0.302	false
2020-02-24T17:15Z	0.308	false
2020-02-24T17:00Z	0.302	false
2020-02-24T16:45Z	0.312	false
2020-02-24T16:30Z	0.316	false
2020-02-24T16:15Z	0.319	false
2020-02-24T16:00Z	0.32	false
2020-02-24T15:45Z	0.324	false
2020-02-24T15:30Z	0.333	false
2020-02-24T15:15Z	0.332	false
2020-02-24T15:00Z	0.336	false
2020-02-24T14:45Z	0.344	false
2020-02-24T14:30Z	0.353	false
2020-02-24T14:15Z	0.358	false
2020-02-24T14:00Z	0.362	false
2020-02-24T13:45Z	0.374	false
2020-02-24T13:30Z	0.379	false
2020-02-24T13:15Z	0.377	false

Forecast data

Key information

• Station name: Idless Dam
• Station ID: 3171
• River name: River Allen
• Typical range: 0.05m to 1.10m
• Highest level on record: 1.25m on 07 December 2000
• Site datum: 1.25mAOD (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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