Alger Underwater Preserve

Alger Underwater Preserve
Location within the state of Michigan
LocationLake Superior, Alger County, Michigan USA
Nearest cityMunising, Michigan
Coordinates46°30′14″N 86°33′32″W / 46.504°N 86.559°W / 46.504; -86.559
Governing bodyMichigan Department of Natural Resources

The Alger Underwater Preserve is a preservation area in the U.S. state of Michigan. Located in Lake Superior, it protects waters that lie offshore the Pictured Rocks National Lakeshore and the Grand Island National Recreation Area.