Receiving watercourse
Menai Strait
36 monitored storm overflows record Menai Strait as their receiving watercourse in the National Storm Overflow Hub. Operated by Dwr Cymru Welsh Water.
36
Storm overflows
0
Active right now
0
Monitors offline
193
Spill events · 12 months
7,706h
Recorded discharge · 12 months
0
Open discrepancies
Every monitored overflow· 36
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- Menai Bridge Porth Wrach No 2 OverflowDwr Cymru Welsh Waterinactive
- Port Terrace Felinheli OverflowDwr Cymru Welsh Waterinactive
- Crown Street Caernarfon OverflowDwr Cymru Welsh Waterinactive
- Waterloo Port Road Storm OverflowDwr Cymru Welsh Waterinactive
- Llanfair PG Anglesey No 2 Storm OverflowDwr Cymru Welsh Waterinactive
- Glan Y Mor Felinheli OverflowDwr Cymru Welsh Waterinactive
- Menai Bridge Porth Wrach No 2 Storm OverflowDwr Cymru Welsh Waterinactive
- Bank Quay Caernarfon Storm OverflowDwr Cymru Welsh Waterinactive
- Balaclava Road Caernarfon Storm OverflowDwr Cymru Welsh Waterinactive
- Treborth Bangor WwTW OverflowDwr Cymru Welsh Waterinactive
- B4419 Caernarfon Storm OverflowDwr Cymru Welsh Waterinactive
- Aber Storm OverflowDwr Cymru Welsh Waterinactive
- Llanfair Pwllgwyngyll WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Llyn Y Felin Storm OverflowDwr Cymru Welsh Waterinactive
- Llyn Y Felin OverflowDwr Cymru Welsh Waterinactive
- Beach Road Bangor Storm OverflowDwr Cymru Welsh Waterinactive
- Bangor Treborth WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Hen Gei Llechi Felinheli Main OverflowDwr Cymru Welsh Waterinactive
- Menai Ville Storm OverflowDwr Cymru Welsh Waterinactive
- Menai Bridge Faelog Causeway 1 OverflowDwr Cymru Welsh Waterinactive
- Menai Bridge Suspension Storm OverflowDwr Cymru Welsh Waterinactive
- Menai Suspension Bridge No 3 OverflowDwr Cymru Welsh Waterinactive
- Brynsiencyn WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Beaumaris & Llanfaes WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Llangoed Lleiniog OverflowDwr Cymru Welsh Waterinactive
- Menai Llandegfan Storm OverflowDwr Cymru Welsh Waterinactive
- Llandegfan Rhianfa OverflowDwr Cymru Welsh Waterinactive
- Beaumaris West End OverflowDwr Cymru Welsh Waterinactive
- Fryars Bay Llanfaes OverflowDwr Cymru Welsh Waterinactive
- Glyn Garth OverflowDwr Cymru Welsh Waterinactive
- Beaumaris Green Storm OverflowDwr Cymru Welsh Waterinactive
- Brynsiencyn Main Storm OverflowDwr Cymru Welsh Waterinactive
- Brynsciencyn OverflowDwr Cymru Welsh Waterinactive
- Bangor Beach Road OverflowDwr Cymru Welsh Waterinactive
- Coleg Normal OverflowDwr Cymru Welsh Waterinactive
- Gorad Road Bangor Storm OverflowDwr Cymru Welsh Waterinactive
Seen something?
Sewage debris, foam, dead fish — citizen sightings are cross-referenced against the official discharge data above and strengthen the public record.