Park officials are installing barriers in front of boat launches in an attempt to prevent invasive mussels recently discovered in Montana from spreading to the park and into the Columbia River Basin.
This content is restricted to subscribers of OutdoorNews.com. If you are already an OutdoorNews.com subscriber, you can log in here. If you are not and would like to read this and all the other great content OutdoorNews.com has to offer, click here.