Wales: flood warnings, river levels and rainfall

Flood warnings in force in Wales

From Natural Resources Wales (NRW), which issues Wales’s flood warnings. We check its feed every 15 minutes.

River levels in Wales

Every active river gauge in Wales, placed by the council area it stands in — not by the agency that runs it.

None of the 224 gauges we can judge is above its typical high at our last reading (13:08). 6 other gauges — tidal, a structure, a flow gauge, no recent reading or no typical range — are not judged.

The Environment Agency runs 2 of them on border rivers; they are counted here because they stand in Wales. Natural Resources Wales also runs 5 gauges just over the border in England, which are counted with England.

Gauges by council area

Towns and villages with their own page

75 places in Wales have a flood page built from the river gauges that carry their name. Somewhere not listed may still be covered: find it on the map or under its council area above.

• Aberaeron Ceredigion
• Aberbechan Powys
• Abercynon Rhondda Cynon Taf
• Abernant Powys
• Aberystwyth Ceredigion
• Beddgelert Gwynedd
• Bodffordd Isle of Anglesey
• Bowling Bank Wrexham
• Brynmenyn Bridgend
• Buttington Powys
• Caersws Powys
• Cilrhedyn Pembrokeshire
• Corwen Denbighshire
• Coytrahen Bridgend
• Craig-y-nos Powys
• Crewgreen Powys
• Cwmystwyth Ceredigion
• Ddol Powys
• Dolwen Powys
• Druid Denbighshire
• Esgair Powys
• Forge Carmarthenshire
• Frampton Vale of Glamorgan
• Garndolbenmaen Gwynedd
• Gelli Rhondda Cynon Taf
• Glasfryn Carmarthenshire
• Goginan Ceredigion
• Ilston Swansea
• Knighton Powys
• Llanddowror Carmarthenshire
• Llandrinio Powys
• Llandybie Carmarthenshire
• Llanelli Carmarthenshire
• Llanerfyl Powys
• Llanfair Ceredigion
• Llanfyllin Powys
• Llangennech Carmarthenshire
• Llangorwen Ceredigion
• Llanidloes Powys
• Llanmaes Vale of Glamorgan
• Llanrhystud Ceredigion
• Llanrwst Conwy
• Llanwrda Carmarthenshire
• Llanymynech Powys
• Login Carmarthenshire
• Maesteg Bridgend
• Meifod Powys
• Merthyr Merthyr Tydfil
• Michaelchurch-on-Arrow Powys
• Mitchel Troy Monmouthshire
• Nant Peris Gwynedd
• New Tredegar Caerphilly
• Ogmore Bridgend
• Pant Mawr Powys
• Penybont Vale of Glamorgan
• Pontardawe Neath Port Talbot
• Pontarddulais Swansea
• Ponthir Torfaen
• Pontneddfechan Powys
• Pontsticill Merthyr Tydfil
• Pontyberem Carmarthenshire
• Pontypridd Rhondda Cynon Taf
• Pwll Carmarthenshire
• Redbrook Monmouthshire
• Rossett Wrexham
• Ruthin Denbighshire
• Trallong Powys
• Treffgarne Pembrokeshire
• Trefriw Conwy
• Tregaron Ceredigion
• Troedyrhiw Merthyr Tydfil
• Waterloo Caerphilly
• Ynys Neath Port Talbot
• Ynysddu Caerphilly
• Ystradgynlais Powys

Rainfall in Wales

150 rain gauges in Wales on FloodRadar’s rainfall map — 143 run by Natural Resources Wales, 7 run by the Environment Agency. Each shows the last hour, day and week of rain, and how that compares with the gauge’s own record.

Flood warning history

12,740 flood warnings and alerts raised in Wales since February 2006: 32 severe flood warnings, 2,736 flood warnings and 9,972 flood alerts. The most recent was raised on 19 September 2026. The busiest year was 2024, with 1,058.

Wales’s record is Natural Resources Wales’s published list of every warning and alert since February 2006 — our copy runs to 18 June 2026 — joined to the warnings FloodRadar has recorded live since 12 September 2026. Warnings raised between those two dates are not held until NRW next publishes its list.

Storm overflows

4 of 2,242 Dŵr Cymru Welsh Water storm overflows were reporting a discharge at the last check of the company’s live monitoring, 3 min ago. 35 more were offline or not reporting, which is not the same as not discharging.

• Cwm Penmachno WwTW Storm Overflow into River Machnosince 22 Sep, 20:45
• Waterston WwTW Storm Overflow into Hazelbeach Streamsince 18 Sep, 08:00
• Maple Avenue Storm Overflow into River Ebbwsince 18 Sep, 06:15
• Commins Coch Storm Overflow into River Twymynsince 16 Sep, 15:45

Event monitors show when an overflow operates; they do not measure how much, and this is not advice on water quality. To report pollution in Wales, contact Natural Resources Wales: 0300 065 3000 or online.

Reservoirs in Wales

How full the reservoirs that supply Wales’s tap water are, as each company publishes it. Reservoir levels are about water supply, not flood risk.