Grand Portage Lake is a 148 acre lake located in Iron County. It has a maximum depth of 33 feet. Visitors have access to the lake from a public boat landing. Fish include muskie, walleye, northern pike, largemouth bass, smallmouth bass and panfish. According to the Wisconsin DNR, muskie, walleye, northern pike, largemouth bass and panfish are common in this lake. Smallmouth bass are listed as present.