In Oregon, beaver dams along Fanno and Bronson creeks stored hundreds to over 1,200 cubic meters more water during storms, slowing how quickly runoff moved downstream

Beaver dams significantly slow floodwater flow in urban creeks, according to a new study. These natural structures store substantial amounts of water during moderate and large storms. While not eliminating floods, dams provide valuable time for managing water surges. The research highlights that beaver dams are most effective in smaller and moderate storm events. This study offers evidence for nature-based solutions in urban flood management strategies.