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Staff describes beaver-dam analogs to raise water table and attract beavers
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Summary
A staff member outlined the use of beaver-dam analogs (BDAs): driving posts, weaving willows and allowing soil to accumulate behind the structure to raise the water table and encourage beaver colonization. The presentation was explanatory; no formal action was taken.
Staff member, a staff member, described beaver-dam analogs, or BDAs, as structures installed by pounding posts and weaving willows to raise the water table and create habitat that attracts beavers.
The technique “mimics what beavers have been doing for millions of years,” the staff member said, and is intended for streams and wetlands that “aren't beaver ready yet.” The staff member said the goal is to improve habitat so beavers will move in and perform the work naturally.
According to the presentation, crews pound posts with a post pounder, wind willows between the posts to mimic a beaver dam, and allow water to pile up behind the structure. “When water piles up behind a dam, soil does also, which raises the water table up as the soil accumulates behind the dam,” the staff member said. The presenter also stated, “This is a beaver dam analog, also known as a BDA for short,” and referred to the result as a real beaver dam.
The remarks were descriptive background about the restoration technique; the transcript shows no motion, vote, or directive associated with the presentation. No funding amounts, locations, or implementation schedule were specified in the segment.
