A ballast water treatment system will keep a Great Lakes ferry from transporting invasive species between Isle Royale and the port at Houghton.

Removing invasive plant species has restored natural functions and created new fish and wildlife habitat at the Cowles Bog wetland complex.

Thirty artificial fish reefs were installed in Lake Huron’s Thunder Bay, creating new fish spawning habitat in an area that was damaged by cement dust.

The U.S. Geological Survey is taking an innovative approach to simultaneously restoring two native fish species — Atlantic salmon and bloater — at different levels of Lake Ontario’s food web.

The dredging of 140,000 cubic yards of contaminated sediment from Milwaukee’s Lincoln Creek and the Milwaukee River channel removed the largest source of toxic PCBs in the river, which will reduce contaminant concentrations in fish.

The Lake Erie watersnake, a subspecies of the Northern watersnake found only on Lake Erie’s islands, was brought back from the brink of extinction.

A dredging project removed 43,000 cubic yards of contaminated sediment from the bottom of Muskegon Lake and advanced efforts to remove the lake from a list of 43 Great Lakes Areas of Concern.

A barrier installed in northern Indiana’s Trail Creek will reduce the number of sea lamprey in Lake Michigan, where the blood-sucking invaders prey on fish.