More than 700 acres will be preserved.
St. Croix River
Spectaclecase mussels could be more than 100 years old.
The St. Croix remains one of the cleanest tributaries to the Mississippi River. But the reports highlight some troubling trends, including increasing development that leads to more polluted runoff entering the river.
Inspectors will staff six decontamination boats on the St. Croix River on July 14 and July 15 to search for and get rid of invasive species, including zebra mussels, Eurasian watermilfoil, curly leaf pondweed, bighead carp, rusty crayfish and Asian clams.
Bighead carp also found during proactive monitoring.