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Teifi water levels

4 gauges from Pontrydfendigaid No1 River Station to Glan Teifi River Station. None is above its typical high. 9 storm overflows upstream are discharging now. Gauges in Ceredigion, Pembrokeshire; levels are checked every 15 minutes.

4gauges

0above normal

9overflows upstream discharging

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Gauges

Monitoring stations, source to mouth

Station	Town	Level now	Status	Trend
Pontrydfendigaid No1 River Station	—	0.84 m 16m ago	Within its typical range	—
Pont Llanio River Station 21.6 km by river	—	1.50 m 16m ago	Within its typical range	—
Llanfair River Station 45.3 km by river	Llanfair	1.55 m 16m ago	Within its typical range	▽
Glan Teifi River Station 31.8 km by river	—	2.36 m 16m ago	Within its typical range	▼

Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.

Contains OS data © Crown copyright and database rights 2026.

Gauged tributaries

Streams and rivers with a gauge whose water joins the Teifi above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.

2 gauged tributaries, 2 gauges

Afon Brennig name from the river map

Joins the Teifi between Pontrydfendigaid No1 River Station and Pont Llanio River Station, no more than 7.0 km by river above Pont Llanio River Station.

Tregaron River Station

0.56 m 16m ago

Within its typical range

Its water passes Pont Llanio River Station and every gauge below it on the Teifi. It does not pass Pontrydfendigaid No1 River Station or the gauges above it.

Tyweli

Joins the Teifi between Llanfair River Station and Glan Teifi River Station, no more than 26.9 km by river above Glan Teifi River Station.

Llandyssul River Station

0.86 m 16m ago

Within its typical range

Its water passes Glan Teifi River Station and every gauge below it on the Teifi. It does not pass Llanfair River Station or the gauges above it.

Where the Teifi goes

Below Glan Teifi River Station, its water next reaches Cardigan Quay TideGauge, 11.5 km by river downstream.

Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.

Streams without a gauge

Named streams on the river map that flow into the Teifi and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.

Afon Duar (joins about 16 km above Llanfair River Station)
Afon Grannell (joins about 20 km above Llanfair River Station)
Nant Bargod (joins about 17 km above Glan Teifi River Station)
Nant Cledlyn (joins about 9.9 km above Llanfair River Station)

Storm overflows upstream

39 storm overflows are traced upstream of Glan Teifi River Station, the Teifi’s lowest gauge on the river map: on the Teifi itself, on its gauged tributaries, and on smaller streams that join above there.

9 report discharging now
30 not discharging
0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflows traced upstream of Glan Teifi River Station: 2,946 spills over 32,507 hours in total, across the 35 that have a figure. 1 had no usable monitor data that year; 3 have no 2025 figure.

Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Teifi includes the smaller streams that join it there. Every overflow traced is listed here, each stretch in full. Back to the short lists →

Between Pontrydfendigaid No1 River Station and Pont Llanio River Station2 overflows

Pontrhydfendigaid Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 21.5 km by river above Pont Llanio River Station · 2025: 52 spills, 133 h
Tregaron WwTW Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 5.9 km by river above Pont Llanio River Station · 2025: 110 spills, 2,129 h

Between Pont Llanio River Station and Llanfair River Station15 overflows · 5 discharging now

Llanddewi Brefi Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Brefi · 43.7 km by river above Llanfair River Station · 2025: 49 spills, 346 h
Llanddewi Brefi WwTW Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Brefi · 43.5 km by river above Llanfair River Station · 2025: 49 spills, 695 h
Silian Storm Overflow Discharging now since 09:30 23 Oct
Dwr Cymru Welsh Water · into Afon Denys · 32.9 km by river above Llanfair River Station · 2025: 93 spills, 2,038 h
New Street Lampeter Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 28.5 km by river above Llanfair River Station · 2025: 23 spills, 13 h
Cwmann Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 27.9 km by river above Llanfair River Station · 2025: 119 spills, 308 h
Cwmann Overflow Not discharging
Dwr Cymru Welsh Water · into Tributary Of Afon Teifi · 27.9 km by river above Llanfair River Station · 2024: 14 spills, 23 h
Lampeter Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 27.4 km by river above Llanfair River Station · 2025: 74 spills, 483 h
Llanwnnen South Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Grannell · 20.9 km by river above Llanfair River Station · 2025: 4 spills, 15 h
Alltyblaca Overflow Discharging now since 09:00 24 Oct
Dwr Cymru Welsh Water · into River Teifi · 18.6 km by river above Llanfair River Station · 2024: 181 spills, 3,587 h
Heol Llanbedr Llanybydder Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Duar · 16.5 km by river above Llanfair River Station · 2025: 33 spills, 173 h
Cwrtnewydd WwTW Storm Overflow Discharging now since 16:44 27 Oct
Dwr Cymru Welsh Water · into Nant Cledlyn · 15.5 km by river above Llanfair River Station · 2025: 363 spills, 4,409 h
Llanybydder Cattle Market Storm Overflow Discharging now since 07:15 24 Oct
Dwr Cymru Welsh Water · into River Teifi · 14.3 km by river above Llanfair River Station · 2025: 84 spills, 1,087 h
Llanybydder Storm Overflow Discharging now since 17:00 27 Oct
Dwr Cymru Welsh Water · into River Teifi · 13.9 km by river above Llanfair River Station · 2025: 77 spills, 782 h
Dolwen Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Nant Cledlyn · 13.0 km by river above Llanfair River Station · 2025: 71 spills, 1,085 h
Llanfihangel-Ar-Arth WwTW Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 2.8 km by river above Llanfair River Station · 2025: 53 spills, 686 h

Between Llanfair River Station and Glan Teifi River Station19 overflows · 3 discharging now

Ffostrasol WwTW Overflow Not discharging
Dwr Cymru Welsh Water · into Cerdin · 39.2 km by river above Glan Teifi River Station · 2025: 137 spills, 1,120 h
Northeast Of Lewis Street Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 27.0 km by river above Glan Teifi River Station · 2025: 46 spills, 262 h
Pentrecwrt WwTW Storm Overflow Discharging now since 09:35 26 Oct
Dwr Cymru Welsh Water · into River Teifi · 22.9 km by river above Glan Teifi River Station · 2025: 275 spills, 2,280 h
Rhydlewis North PS Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Nant Collen · 20.2 km by river above Glan Teifi River Station · no official annual figure
Rhydlewis South WwTW Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Nant Collen · 20.2 km by river above Glan Teifi River Station · 2025: no data
Rhydfach Storm Overflow Discharging now since 08:15 23 Oct
Dwr Cymru Welsh Water · into River Teifi · 18.8 km by river above Glan Teifi River Station · 2025: 149 spills, 3,097 h
Aberbanc Storm Overflow Discharging now since 08:15 23 Oct
Dwr Cymru Welsh Water · into Afon Cynllo · 18.0 km by river above Glan Teifi River Station · 2025: 139 spills, 2,782 h
Henllan Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 17.6 km by river above Glan Teifi River Station · 2025: 43 spills, 273 h
Drefach WwTW Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Nant Bargod · 17.6 km by river above Glan Teifi River Station · 2025: 87 spills, 1,382 h
Lon Tanerdy Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 11.4 km by river above Glan Teifi River Station · 2025: 16 spills, 6.3 h
Capel Iwan WwTW Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Mamog · 10.7 km by river above Glan Teifi River Station · 2025: 55 spills, 1,019 h
Teifi Terrace No1 Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 10.1 km by river above Glan Teifi River Station · 2025: 72 spills, 388 h
Newcastle Emlyn Arms Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 10.1 km by river above Glan Teifi River Station · 2025: 115 spills, 755 h
Teifi Terrace No2 Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 10.0 km by river above Glan Teifi River Station · 2025: 133 spills, 1,546 h
Adpar Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 9.7 km by river above Glan Teifi River Station · 2025: 14 spills, 195 h
Newchapel WwTW Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Tributary Of Afon Dulas · 9.0 km by river above Glan Teifi River Station · 2025: 56 spills, 519 h
Cenarth South Of Afon Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 4.2 km by river above Glan Teifi River Station · 2025: 97 spills, 1,218 h
Cenarth WwTW Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 3.9 km by river above Glan Teifi River Station · 2025: 34 spills, 103 h
Abercych Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 180 m by river above Glan Teifi River Station · 2025: 83 spills, 198 h

Tyweli, above Llandyssul River Stationjoins the Teifi above Glan Teifi River Station3 overflows · 1 discharging now

Pencader Bridge Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Talog · 6.3 km by river above Llandyssul River Station · 2025: 41 spills, 294 h
Pencader Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Tyweli · 6.2 km by river above Llandyssul River Station · 2025: 43 spills, 338 h
Pencader WwTW Storm Overflow Discharging now since 09:00 26 Oct
Dwr Cymru Welsh Water · into Afon Tyweli · 5.9 km by river above Llandyssul River Station · 2025: 57 spills, 356 h

A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →

Live status: © Dŵr Cymru Welsh Water, from its Storm Overflow Map. Annual figures for Wales: Dŵr Cymru Welsh Water’s return to Natural Resources Wales, as compiled by The Rivers Trust, Open Government Licence.

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