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Where do I report flooding?

How to a report a flood incident depends on the type of flood and where it is.

Sewers and burst water mains:

  • Contact South West Water online or by phone on 0344 346 2020.

Public drains and flooded roads:

  • To report flooding on the A30 or A38 – call the National Highways Incident Line on 0300 123 5000.
  • Report blocked drains or flooding on other roads to the Cornwall Highways Service or on 0300 1234 222. 

Rivers, reservoirs and the sea

Call the Environment Agency to report:

  • Collapsed or badly damaged river banks
  • Flooding from main rivers or the sea
  • Main rivers blocked by a vehicle or fallen tree causing risk of flooding
  • Unusual changes in river flow
  • Concerns or incidents at a reservoir or dam which may cause a failure or flood

Environment Agency incident hotline: 0800 80 70 60 (24-hour service)

Flooding from other rivers, brooks or streams

  • Contact Cornwall Council to report flooding that is not to a main river: 0300 1234 222.

Groundwater flooding

  • Contact Cornwall Council: 0300 1234 222.

Flooding or muddy run off from fields

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