Do your part to help stop the spread of zebra mussels:
Detailed information about zebra mussels can be found in a handout titled, "Stopping the Spread of Zebra Mussels" (pdf), also available at Riverway visitor centers.
Did You Know?
The Old Man of the Dalles is one of the many features visitors can see looking at the rocks in the Dalles, or rocky gorge, of the St. Croix River. A great way to view these rocky features, as well as St. Croix NSR, is from the water in a boat or a canoe.