Beavers finished the delayed dam jobSourced
A wetland project stalled for years. Then beavers built the dams.
Czech conservation officials had planned small dams in the Brdy area since 2018, but the project was delayed. In 2025, beavers built a series of dams near the planned sites, helping restore the wetland. Officials estimated the work saved about 30 million Czech koruna.
The builders needed no planning permission.
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Beaver-engineered dam in the Czech Republic · Wikimedia contributors
Beaver-engineered dam in the Czech Republic ↗
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Reviewed: 2026-10-01