Is wood in streams always good? – New Hampshire Bulletin
In the face of long-term declines in the wild populations of our state fish, the Eastern brook trout, one of the actions being taken across the state and region is putting wood into streams. For many decades, it was assumed that getting wood out of streams was important to protect water quality, bridges, and river banks, and prevent flooding. This thinking has changed, especially when it comes to smaller streams.
Source: newhampshirebulletin.com