Barriers

Construction of low-head barriers to block spawning runs of sea lampreys began in the late 1970's. Since then barriers have been constructed on several streams in Michigan and Wisconsin in cooperation with state and local agencies or corporations.

Some barriers such as the Brule River Barrier have been constructed with a fish passageway or jumping pool to allow fish to pass while still blocking sea lampreys. All barriers are designed to incorporate trapping sites for the removal of spawning sea lamprey.

• Michigan Streams with Barriers

• Miners River - Lake Superior

• Misery River - Lake Superior

• Weston Creek (Manistique River) - Lake Michigan

• West Branch Whitefish River - Lake Michigan

• Jordan River - Lake Michigan

• Betsie River - Lake Michigan

• Little Manistee River - Lake Michigan

• White River - Lake Michigan

• Days River - Lake Michigan

• Albany Creek - Lake Huron

• Nunns Creek - Lake Huron

• East Branch Au Gres River - Lake Huron

• Wisconsin Streams with Barriers

• Brule River - Lake Superior

• Middle River - Lake Superior

• Fox River - Lake Michigan (sealed lock system to Lake Winnebago)

• Kewaunee River - Lake Michigan

• East Twin River - Lake Michigan

Photo by U.S. Fish & Wildlife Service staff

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