Receiving watercourse
River Conwy
15 monitored storm overflows on the River Conwy are listed in the National Storm Overflow Hub. Operated by Dwr Cymru Welsh Water.
15
Storm overflows
0
Active right now
0
Monitors offline
166
Spill events · 12 months
122h
Recorded discharge · 12 months
0
Open discrepancies
Every monitored overflow· 15
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- Glan Y Mor Road Deganwy Tywyn Storm OverflowDwr Cymru Welsh Waterinactive
- Llanrwst WwTW Settled Storm OverflowDwr Cymru Welsh Waterinactive
- Betws-Y-Coed Storm OverflowDwr Cymru Welsh Waterinactive
- Llanrwst WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Tan Y Ffordd Dolgarrog Storm OverflowDwr Cymru Welsh Waterinactive
- Gwydyr Road Dolgarrog Storm OverflowDwr Cymru Welsh Waterinactive
- Waterloo Bridge Storm OverflowDwr Cymru Welsh Waterinactive
- Trefriw Main Storm OverflowDwr Cymru Welsh Waterinactive
- Pendraw R Llan Glan Conwy Storm OverflowDwr Cymru Welsh Waterinactive
- Llanrwst Storm OverflowDwr Cymru Welsh Waterinactive
- Tyn-y-Groes WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Betws-Y-Coed Muriau Storm OverflowDwr Cymru Welsh Waterinactive
- Conwy Gyffin Storm OverflowDwr Cymru Welsh Waterinactive
- Morfa Drive Conwy Storm OverflowDwr Cymru Welsh Waterinactive
- Conwy Harbour 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.