Stone threshold and stone groups

About stone thresholds and stone groups. Stone thresholds and groups of stones create life in the river. But we need to design the thresholds so that they don't hinder the fish or collect fine sediments in the river. A collaboration between NJFF and Norske Lakseelver, with support from the Norwegian Environment Agency.

Stone threshold and stone groups

Stone thresholds and groups of stones create life in the river. But we need to design the thresholds so that they don't hinder the fish or collect fine sediments in the river. A collaboration between NJFF and Norske Lakseelver, with support from the Norwegian Environment Agency.