DNR walleye tagging on the Fox River in Green Bay, Wisconsin The DNR began a project this spring to tag walleyes on the Fox River and other tributaries of Green Bay to update catch and exploitation rates. A habitat improvement project aims to enhance walleye spawning in the Fox River near Green Bay.About 300 tons of cobblestone will be placed on the riverbed to create new spawning substrate for fish.The project is funded by the conservation group Walleyes For Tomorrow in consultation with the Department of Natural Resources.Green Bay's walleye population has surged since the 1970s, but recent declines in catch rates have concerned some anglers. When walleyes swim into the Fox River near...