Featured river · severn
River Severn
Britain's longest river — 220 miles from Plynlimon, mid-Wales, to the Bristol Channel. Salmon, paddleboarders, and Worcester's Diglis swimming spot.
113
Storm overflows
0
Active right now
0
Spill events · 24 h
19
Open discrepancies
0
Monitors offline
199
WIMS sampling points
24
Hydrology stations
Spill record· last 12 months · across the river
795
spill events
+13150% vs prior 12m
111,574h
cumulative discharge
+2922392% vs prior 12m
6 weeks
longest single event (all time)
2025-02-12
first event on record
Truth Engine flags· 19 open
- CriticalExtended spill (>72 h)Dwr Cymru Welsh Water · Western Valley LG Tanks Storm Overflow · Severn Estuary
- CriticalExtended spill (>72 h)Severn Trent Water · SVT00289 · RIVER SEVERN
- CriticalExtended spill (>72 h)Severn Trent Water · SVT01218 · RIVER SEVERN (NON TIDAL)
- CriticalExtended spill (>72 h)Severn Trent Water · SVT01447 · RIVER SEVERN ESTUARY
- CriticalExtended spill (>72 h)Wessex Water · WXW00875 · (E) SEVERN ESTUARY
- CriticalExtended spill (>72 h)Severn Trent Water · SVT00291 · RIVER SEVERN
- CriticalExtended spill (>72 h)Severn Trent Water · SVT01168 · RIVER SEVERN
- CriticalExtended spill (>72 h)Dwr Cymru Welsh Water · Barry Town Short Sea Storm Overflow · Severn Estuary
- CriticalExtended spill (>72 h)Dwr Cymru Welsh Water · Cardiff Eastern Short Sea Outfall Storm Overflow · Severn Estuary
- CriticalExtended spill (>72 h)Severn Trent Water · SVT01838 · RIVER SEVERN
- CriticalExtended spill (>72 h)Severn Trent Water · SVT00181 · RIVER SEVERN
- CriticalExtended spill (>72 h)Severn Trent Water · SVT02494 · RIVER SEVERN
+ 7 more in the full feed
Recent spill events· last 7 days · 10
- 2026-06-19 09:41 UTCSevern Trent Water · SVT00291 · RIVER SEVERN3 min
- 2026-06-17 12:21 UTCDwr Cymru Welsh Water · Machen Close St Mellons Storm Overflow · Severn Estuary5 min
- 2026-06-17 12:10 UTCDwr Cymru Welsh Water · Machen Close St Mellons Storm Overflow · Severn Estuary6 min
- 2026-06-17 07:50 UTCDwr Cymru Welsh Water · Machen Close St Mellons Storm Overflow · Severn Estuaryongoing
- 2026-06-17 07:42 UTCDwr Cymru Welsh Water · Machen Close St Mellons Storm Overflow · Severn Estuary5 min
- 2026-06-17 05:50 UTCSevern Trent Water · SVT00291 · RIVER SEVERN23 min
- 2026-06-17 04:25 UTCSevern Trent Water · SVT01168 · RIVER SEVERN1 min
- 2026-06-17 03:52 UTCSevern Trent Water · SVT01168 · RIVER SEVERN2 min
- 2026-06-16 10:57 UTCSevern Trent Water · SVT00291 · RIVER SEVERN3 min
- 2026-06-15 08:47 UTCSevern Trent Water · SVT00291 · RIVER SEVERN11 min