Czech Dam Project Was Stalled by Bureaucracy. Beavers Built Their Own.
New York Times
The dam project, drafted in 2018 and based on a former military training site south of Prague, had been delayed by land negotiations. Local beavers built several dams, saving the government more than one million euros.
https://www.nytimes.com/2025/02/12/world/europe/beavers-prague-czech-republic-dam.html