06/09/2026
On a London Tube line, a flooding problem may have found the most unlikely maintenance team: beavers.
In 2023, five Eurasian beavers were released into Paradise Fields, a 20-acre green space near Greenford Station in west London. The Ealing Beaver Project brought them in to help restore the landscape and manage water naturally in an area long affected by flooding.
And the beavers got to work. Within months, they built dams across local streams, slowing the flow of water and creating new wetlands.
Those wetlands now act like natural sponges, holding water during heavy rain rather than letting it rush straight into nearby streets and infrastructure.
That matters because Greenford Station had flooded repeatedly in the past. Local reports say the flooding has stopped since the beavers moved in, even though authorities had previously looked at expensive flood defence options.
Beavers are often called ecosystem engineers, and this is exactly why. Their dams can reduce downstream flooding, create habitat, and make green spaces better for other wildlife. Since the project began, more birds, bats, and butterflies have reportedly been seen around the park, too.
British beavers were hunted to extinction more than 400 years ago, but reintroduction projects are slowly bringing them back.
And in west London, five busy beavers may have done what concrete alone couldn’t.
