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Afon Teifi water levels

1 gauge, at Cardigan Quay TideGauge. 12 storm overflows upstream are discharging now. Gauges in Ceredigion; levels are checked every 15 minutes.

1gauge

12overflows upstream discharging

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Gauges

Monitoring stations, source to mouth

Station	Town	Level now	Status	Trend
Cardigan Quay TideGaugetidal	—	2.02 mAOD 21m ago	Within its typical range	▼

Also on the Teifi by the river map, but filed under another river name: Pontrydfendigaid No1 River Station, Pont Llanio River Station, Llanfair River Station and Glan Teifi River Station.

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 above Pont Llanio River Station, no more than 7.0 km by river above Pont Llanio River Station.

Tregaron River Station

0.54 m 21m ago

Within its typical range

Its water passes Pont Llanio River Station.

Tyweli

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

Llandyssul River Station

0.88 m 21m ago

Within its typical range

Its water passes Glan Teifi River Station.

Where the Teifi goes

No gauge below Cardigan Quay TideGauge is known on the river map.

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

46 storm overflows are traced upstream of Cardigan Quay TideGauge, 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.

12 report discharging now
34 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 Cardigan Quay TideGauge: 3,303 spills over 37,783 hours in total, across the 42 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 →

Above Cardigan Quay TideGauge, the Teifi’s highest gauge7 overflows · 2 discharging now

Pontrhydyceirt WwTW Overflow Not discharging
Dwr Cymru Welsh Water · into Morgenau · 8.3 km by river above Cardigan Quay TideGauge · 2025: 26 spills, 469 h
Llechryd On Nant Arberth Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Nant Arberth · 7.5 km by river above Cardigan Quay TideGauge · 2025: 29 spills, 270 h
Llechryd No 1 Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 6.8 km by river above Cardigan Quay TideGauge · 2025: 90 spills, 1,309 h
Cnwcau Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 5.0 km by river above Cardigan Quay TideGauge · 2025: 62 spills, 1,211 h
Off Church Street Cwm Plysgog Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Plysgog · 4.6 km by river above Cardigan Quay TideGauge · 2025: 12 spills, 13 h
Cilgerran No.1 Storm Overflow Discharging now since 11:45 24 Oct
Dwr Cymru Welsh Water · into River Teifi · 4.3 km by river above Cardigan Quay TideGauge · 2025: 104 spills, 1,798 h
Cilgerran WwTW Storm Overflow Discharging now since 19:30 24 Oct
Dwr Cymru Welsh Water · into River Teifi · 4.3 km by river above Cardigan Quay TideGauge · 2025: 34 spills, 207 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

Above 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

Above 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 20:43 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 21:00 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

Above Pont Llanio River Station2 overflows · 1 discharging now

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 Discharging now since 19:15 27 Oct
Dwr Cymru Welsh Water · into River Teifi · 5.9 km by river above Pont Llanio River Station · 2025: 110 spills, 2,129 h

Near these gauges, connection not known

Within 3 km of one of the Teifi’s gauges in a straight line, but the river map cannot say whether their water reaches it.

Cardigan Bridge Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 50 m from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 27 spills, 152 h
Cardigan Cattle Market Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 180 m from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 20 spills, 112 h
Gloster Row Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 260 m from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 17 spills, 42 h
St.mary Street Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 260 m from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 106 spills, 665 h
Quay Street Car Park Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 270 m from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 6 spills, 8.0 h
Pont-Y-Cleifion Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 500 m from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 72 spills, 388 h
Cardigan WwTW Storm Overflow Discharging now since 11:15 27 Oct
Dwr Cymru Welsh Water · into River Teifi · 840 m from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 182 spills, 1,498 h
St Dogmaels Main Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 1.1 km from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 24 spills, 176 h
St. Dogmaels Maeshyfryd Street Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 1.4 km from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 62 spills, 939 h
Glanteifon Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 1.7 km from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 0 spills, 0 h
St. Dogmaels No.2 Storm Overflow Not discharging
Dwr Cymru Welsh Water · into River Teifi · 1.8 km from Cardigan Quay TideGauge in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 94 spills, 1,860 h
Pen-Y-Bryn Storm Overflow Not discharging
Dwr Cymru Welsh Water · into Afon Pilau · 2.9 km from Cardigan Quay TideGauge in a straight line · no mapped watercourse close enough to be sure · 2025: 102 spills, 1,083 h

1 other overflow within 3 km of these gauges is placed below the Teifi’s lowest gauge or on another river, so not listed.

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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