After 400 years, beavers are back in England; 9 dams are estimated to store 3 million litres of water and slow flood flows

Beavers are reshaping parts of England’s waterways, and their dams can change how water moves and is stored across the landscape.

A government evidence review published on GOV.UK says Eurasian beavers can build dams and canals that push water sideways, creating ponds and wetland features. These structures can slow and store water by increasing the roughness of the landscape.