Receiving watercourse
River Thames
86 monitored storm overflows on the River Thames are listed in the National Storm Overflow Hub. Operated by Anglian Water, Southern Water and Thames Water.
This watercourse is part of our featured River Thames coverage — that page aggregates the whole river, including tributaries and estuary stretches.
86
Storm overflows
0
Active right now
5
Monitors offline
257
Spill events · 12 months
1,154h
Recorded discharge · 12 months
5
Open discrepancies
Every monitored overflow· 86
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- TWL00311Thames Wateroffline
- TWL00341Thames Wateroffline
- TWL00596Thames Wateroffline
- TWL00575Thames Wateroffline
- TWL00360Thames Wateroffline
- SWS00362Southern Waterinactive
- SWS00226Southern Waterinactive
- TWL00438Thames Waterinactive
- TWL00116Thames Waterinactive
- TWL00185Thames Waterinactive
- TWL00809Thames Waterinactive
- TWL00810Thames Waterinactive
- TWL00154Thames Waterinactive
- TWL00220Thames Waterinactive
- TWL00658Thames Waterinactive
- TWL00338Thames Waterinactive
- TWL00371Thames Waterinactive
- TWL00005Thames Waterinactive
- TWL00163Thames Waterinactive
- TWL00203Thames Waterinactive
- TWL00179Thames Waterinactive
- TWL00210Thames Waterinactive
- TWL00400Thames Waterinactive
- TWL00315Thames Waterinactive
- TWL00140Thames Waterinactive
- AWS01111Anglian Waterinactive
- TWL00440Thames Waterinactive
- TWL00237Thames Waterinactive
- TWL00191Thames Waterinactive
- TWL00084Thames Waterinactive
- TWL00248Thames Waterinactive
- TWL00254Thames Waterinactive
- SWS00287Southern Waterinactive
- TWL00123Thames Waterinactive
- TWL00452Thames Waterinactive
- SWS00288Southern Waterinactive
- SWS00581Southern Waterinactive
- TWL00241Thames Waterinactive
- TWL00282Thames Waterinactive
- TWL00273Thames Waterinactive
- TWL00505Thames Waterinactive
- TWL00384Thames Waterinactive
- TWL00087Thames Waterinactive
- TWL00230Thames Waterinactive
- SWS00424Southern Waterinactive
- TWL00304Thames Waterinactive
- TWL00277Thames Waterinactive
- TWL00424Thames Waterinactive
- AWS01000Anglian Waterinactive
- TWL00364Thames Waterinactive
- SWS00618Southern Waterinactive
- TWL00460Thames Waterinactive
- SWS00187Southern Waterinactive
- TWL00423Thames Waterinactive
- SWS00289Southern Waterinactive
- TWL00372Thames Waterinactive
- SWS00627Southern Waterinactive
- TWL00243Thames Waterinactive
- TWL00808Thames Waterinactive
- TWL00274Thames Waterinactive
- TWL00317Thames Waterinactive
- TWL00407Thames Waterinactive
- TWL00100Thames Waterinactive
- TWL00280Thames Waterinactive
- TWL00339Thames Waterinactive
- TWL00033Thames Waterinactive
- SWS00776Southern Waterinactive
- TWL00200Thames Waterinactive
- TWL00029Thames Waterinactive
- SWS00223Southern Waterinactive
- TWL00345Thames Waterinactive
- TWL00209Thames Waterinactive
- TWL00270Thames Waterinactive
- TWL00221Thames Waterinactive
- TWL00415Thames Waterinactive
- TWL00426Thames Waterinactive
- TWL00312Thames Waterinactive
- SWS00225Southern Waterinactive
- TWL00327Thames Waterinactive
- TWL00075Thames Waterinactive
- TWL00506Thames Waterinactive
- TWL00012Thames Waterinactive
- TWL00258Thames Waterinactive
- TWL00199Thames Waterinactive
- SWS00881Southern Waterinactive
- SWS00363Southern Waterinactive
Seen something?
Sewage debris, foam, dead fish — citizen sightings are cross-referenced against the official discharge data above and strengthen the public record.