A beaver dam analogue (BDA) is a line of pilings driven into the streambed, in a line across the stream. When the pilings are woven with live willow and red osier dogwood cuttings, it functions similar to a beaver dam, slowing the water down, spreading it out, and causing sediment to drop to the streambed. BDAs can also provide a sturdy base for beaver to build upon.
Working with Beavers to Restore Salmon Habitat (Pollock et al 2012)
Using Beaver Dams to Restore Incised Stream Ecosystems (Pollock et al 2014)
See also: Restoration Resources