Receiving watercourse
River Dee
57 monitored storm overflows record River Dee as their receiving watercourse in the National Storm Overflow Hub. Operated by Dwr Cymru Welsh Water and United Utilities.
57
Storm overflows
0
Active right now
0
Monitors offline
389
Spill events · 12 months
53,728h
Recorded discharge · 12 months
5
Open discrepancies
Every monitored overflow· 57
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- Cynwyd WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- UUP00630United Utilitiesinactive
- Bridge Street No 2 Storm OverflowDwr Cymru Welsh Waterinactive
- Holt WwTW OverflowDwr Cymru Welsh Waterinactive
- Holt WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Holt Storm OverflowDwr Cymru Welsh Waterinactive
- Abbey Road Storm OverflowDwr Cymru Welsh Waterinactive
- Cefn Mawr WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Next to Bridge Newbridge OverflowDwr Cymru Welsh Waterinactive
- Llangollen Church Street Storm OverflowDwr Cymru Welsh Waterinactive
- Castle Drive Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Chester Souter's Lane Storm OverflowDwr Cymru Welsh Waterinactive
- Near Dee Hills Park Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Dee Lane Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Dee Cottages Storm OverflowDwr Cymru Welsh Waterinactive
- Chester Street Storm OverflowDwr Cymru Welsh Waterinactive
- Chester Grosvenor Bridge Storm OverflowDwr Cymru Welsh Waterinactive
- The Groves Storm OverflowDwr Cymru Welsh Waterinactive
- Shotton Ash Grove Storm OverflowDwr Cymru Welsh Waterinactive
- Marshlands Road Little Neston Storm OverflowDwr Cymru Welsh Waterinactive
- Mount Pleasant Chester OverflowDwr Cymru Welsh Waterinactive
- Chester WwTW Inlet Storm OverflowDwr Cymru Welsh Waterinactive
- Llangollen Victoria Prom Storm OverflowDwr Cymru Welsh Waterinactive
- Linden Avenue Storm OverflowDwr Cymru Welsh Waterinactive
- Dock Road Connahs Quay Storm OverflowDwr Cymru Welsh Waterinactive
- Llangollen East Street Storm OverflowDwr Cymru Welsh Waterinactive
- Dee Bridge Siphon Storm OverflowDwr Cymru Welsh Waterinactive
- Pembroke Close Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Sandy Lane Storm OverflowDwr Cymru Welsh Waterinactive
- Llangollen Riverside Park Storm OverflowDwr Cymru Welsh Waterinactive
- Cedar Way Storm OverflowDwr Cymru Welsh Waterinactive
- Maes Mathonwy Denbigh Storm OverflowDwr Cymru Welsh Waterinactive
- Chester Green Bank Road Storm OverflowDwr Cymru Welsh Waterinactive
- Heswall Cottage Lane Storm OverflowDwr Cymru Welsh Waterinactive
- Robert's Terrace Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Queensferry WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Castle Drive Chester OverflowDwr Cymru Welsh Waterinactive
- Mill Street Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Maelor Way Overton WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Corwen WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Bangor on Dee WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Station Road Bagillt Storm OverflowDwr Cymru Welsh Waterinactive
- Bala WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Church Street Llanuwchllyn Storm OverflowDwr Cymru Welsh Waterinactive
- Llangollen WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- The Dingle Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Upper Bryn Road Connahs Quay Storm OverflowDwr Cymru Welsh Waterinactive
- Handbridge Chester Storm OverflowDwr Cymru Welsh Waterinactive
- Bridge Street Storm Overflow No1Dwr Cymru Welsh Waterinactive
- Park Avenue Storm OverflowDwr Cymru Welsh Waterinactive
- Overton Wrexham WwTW OverflowDwr Cymru Welsh Waterinactive
- Near Bagillt Road Greenfield Storm OverflowDwr Cymru Welsh Waterinactive
- Northern Terrace Corwen Storm OverflowDwr Cymru Welsh Waterinactive
- Llangollen West Street Storm OverflowDwr Cymru Welsh Waterinactive
- Park West Heswall OverflowDwr Cymru Welsh Waterinactive
- Cestrian Street Connah's Quay Storm OverflowDwr Cymru Welsh Waterinactive
- Chester Eccleston 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.