Storm Discharge Status
The map below shows the latest available storm discharge information from Thames Water's Event Duration Monitoring (EDM) system.
The map is centred on Hambleden Weir. You can zoom and move the map to explore other areas of the River Thames.
Important:
EDM information indicates storm overflow activity
but does not confirm that sewage is present in the
river.
Please note:
EDM data indicates storm overflow activity but does
not confirm that sewage is present in the river.
Thames Water advises that EDM data should not be used
on its own to determine whether a river is safe to
enter.