Flooding

Parts of Wandsworth are at risk of flooding from the rivers Wandle, Graveney, Thames and the Beverley Brook.

In all circumstances when a major incident occurs in the borough your first action should be to contact the emergency services by telephoning 999.

Our own 24 hour emergency control can be contacted on 020 8871 7445.

The Emergency Planning unit is available from Monday to Friday 9am to 5pm at emergencyplanning@wandsworth.gov.uk  or 020 8871 5747.

Flood warnings

The Environment Agency issues flood warnings to those felt to be at risk of fluvial (i.e. flooding from rivers and brooks) or tidal flooding. These warnings are telephoned directly to individual properties using the Automatic Voice Messaging System (AVM). The same warning will also be passed to the Emergency Services, Local Authorities, local radio, media and other utilities.

Residents can obtain up to date flooding information on the Floodline 0845 9881188 or via the Environment Agency's flood pages. Information on the website is updated every 15 minutes.

There are three levels of alert:

Flood alert 

Flood alert

What it means

Flooding is possible. Be prepared.

When it's used

Two hours to two days in advance of flooding.

What to do

  • Be prepared to act on your flood plan.
  • Prepare a flood kit of essential items
  • Monitor local water levels and the flood forecast on the Environment Agency website.

Flood warning  

Flood warning

What it means

Flooding is expected.  Immediate action required.

When it's used

Half an hour to one day in advance of flooding

What to do

  • Move family, pets and valuables to a safe place.
  • Turn off gas, electricity and water supplies if safe to do so.
  • Put flood protection equipment in place.

Severe flood warning

Severe flood warning

What it means

Severe flooding. Danger to life.

When it's used

When flooding poses a significant threat to life. 

What to do

  • Stay in a safe place with a means of escape.
  • Be ready should you need to evacuate from your home or business.
  • Co-operate with the emergency services.
  • Call 999 if you are in immediate danger.

Warnings no longer in force

What it means

No further flooding is currently expected in your area.

When it's used

When river or sea conditions begin to return to normal.

What to do

  • Be careful.  Flood water may still be around for several days.
  • If you've been flooded, ring your insurance company as soon as possible.

More information

Using historical flood data the Environment Agency have produced maps that show Flood Zones within the Borough.

Many of these zones now benefit from flood defences such as the Thames Barrier, raised embankments, weirs and sluices.

Use Wandsworth Maps to see if your property falls within one of the Environment Agency Flood Zones.