During heavy rain and at high tide, the Thames and its tributaries are at most risk of flooding.
Areas most likely to be affected in Lewisham borough are New Cross, Deptford, central Lewisham, and low-lying areas around the A21.
Find out if your area is at risk
Find out if your area is at risk of flooding using the Environment Agency’s flood map.
Preparations and precautions you can take
sign up online to the Environment Agency’s free alert system Floodline Warnings Direct
or by calling 0845 988 1188 – you can select to receive warnings by phone, text, email, fax or pager
know how to turn off your gas, electricity and water supplies
check your buildings and contents insurance policies to see what cover they provide for flood damage
make a plan
for how to deal with a flood should it happen - think about what you would want to move to safety
- keep flood waters out by obtaining sandbags from a builders' merchant and covers for air bricks and other vents
More advice can be found in the Environment Agency’s guide to Protecting your Property from Flooding (pdf 2.4MB).
While the Thames Barrier is designed to help prevent flooding due to high tides, Lewisham Council has also made substantial landscaping improvements to reduce the risk of flooding by increasing the capacity of the borough’s waterways and rivers.
Find out more about flooding on the Environment Agency's website.