Peniel Overflow
Storm overflow run by Dwr Cymru Welsh Water, discharging into Nant Crychiau.
"Not discharging" means the company's monitor reports no discharge right now — not that the water is clean. The feed publishes status only; no discharge volume is measured.
Year by year
Dŵr Cymru Welsh Water's annual Event Duration Monitoring return to Natural Resources Wales (12/24-hour spill count), as compiled by The Rivers Trust. 2026 is our own running count, the same way, from the live feed since 28 February (when we began keeping every discharge it reports) — so it can only be lower than the full year. The official figure is published next spring.
"No data" means the monitor was not working or not required to report that year — not zero.
Discharges we have recorded
20 discharge periods since 28 Jan 2025. 18 of them come from Dwr Cymru Welsh Water's own event-duration-monitoring records (published by the company, Jan 2025 – Jun 2025); the live feed adds anything after that. The official annual count is the figure to quote.
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Wed 30 Sep 2026, 00:5311 h 55 min
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Tue 15 Sep 2026, 13:145 min
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Fri 13 Jun 2025, 19:001 d 17 h
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Thu 12 Jun 2025, 13:3020 h 15 min
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Tue 3 Jun 2025, 07:004 h 15 min
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Tue 27 May 2025, 13:302 h 0 min
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Wed 23 Apr 2025, 08:4515 min
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Wed 23 Apr 2025, 08:0015 min
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Tue 22 Apr 2025, 23:006 h 15 min
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Fri 18 Apr 2025, 09:451 d 18 h
Show 10 earlier
| Started (UK time) | Ended | Discharge time |
|---|---|---|
| 17 Apr 2025, 16:00 | 17:15 | 1 h 15 min |
| 15 Apr 2025, 18:00 | 10:45 | 1 d 16 h |
| 8 Mar 2025, 11:45 | 12:15 | 30 min |
| 7 Mar 2025, 02:00 | 01:45 | 23 h 30 min |
| 25 Feb 2025, 22:30 | 22:45 | 15 min |
| 23 Feb 2025, 10:30 | 21:45 | 2 d 11 h |
| 19 Feb 2025, 23:30 | 00:00 | 3 d 0 h |
| 1 Feb 2025, 07:30 | 13:00 | 5 h 15 min |
| 31 Jan 2025, 01:45 | 04:30 | 1 d 2 h |
| 28 Jan 2025, 10:45 | 00:00 | 1 d 13 h |
The year figures above use the EA's 12/24-hour counting method, so they are comparable with the official figures; the monitor log's 27 raw blocks were merged into 20 continuous discharge periods (gaps under 15 min joined).
Rain nearby last 30 days
Nearest live rain gauge: Rhydargaeau Raingauge, 2.4 km away. Brown shading = when this overflow was discharging; ▼ = a discharge start.
Overflow shading is a timing match, not proof of cause — heavy rain and spills share a trigger. Times come from the water company’s event-duration monitor (site status only; no discharge volume is published).
Where it is
Concerned about this overflow?
Report pollution you can see or smell to the regulator straight away; the company handles complaints about the overflow itself.
Live status: © Dŵr Cymru Welsh Water, from its Storm Overflow Map. Spill-event history: © Dŵr Cymru Welsh Water's published EDM start/stop records. Annual figures: The Rivers Trust EDM compilation, © Dŵr Cymru/Welsh Water, Open Government Licence. Times are shown in UK local time. FloodRadar republishes the monitor's status; it does not measure discharges itself.