Research and analysis

South London: groundwater situation

The latest update on monitored groundwater levels and whether there are any groundwater alerts or warnings in force.


Flooding from groundwater: situation report for Kent and South London: New Year update

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These documents provide information on the groundwater situation for South London.

Flooding from groundwater can happen when the level of water within the rock or soil that makes up the land surface (known as the water table) rises. The level of the water table changes with the seasons due to variations in long term rainfall and water abstraction. When the water table rises and reaches ground level, water starts to emerge on the surface and flooding can happen.

Lead local flood authorities (the unitary or County Council) are responsible for managing the risk of flooding from groundwater. They set out how they plan to do this in their local flood risk management strategies.

The Environment Agency has a strategic overview for all sources of flooding including groundwater. This means they will provide support to other risk management authorities. They supply information in the form of monitored groundwater levels. In some areas that have historically experienced groundwater flooding, the Environment Agency provide a groundwater alert or warning service.

Published 28 March 2014
Last updated 15 January 2020 + show all updates
  1. Latest update for Kent and S London groundwater added

  2. Replaced November 2019 report with December 2019 report

  3. Groundwater report for November 2019 added.

  4. February groundwater situation report added.

  5. December report added

  6. March groundwater situation report added.

  7. South London groundwater situation report updated.

  8. January 2016 groundwater situation report added.

  9. Updated 23 January 2015

  10. New briefing added.

  11. First published.