From pristine mountain wilderness to the region’s biggest industrial hub, the Green-Duwamish watershed is a study in contrasts.

Recently, the nonprofit conservation organization American Rivers ranked the Green-Duwamish River as one of the most endangered waterways in the nation.

KPLU environmental reporter Bellamy Pailthorp covered the story, taking an aerial tour of the watershed to explore some of the conditions and challenges facing the river.

If you have a couple of minutes, it’s definitely worth checking out.