The Anna River is a 7.1-mile-long (11.4 km)[2] river on the Upper Peninsula of the U.S. state of Michigan. The mouth of the river is at 46°24′40″N 86°38′26″W / 46.41111°N 86.64056°W / 46.41111; -86.64056 (Anna River (mouth))[1] in the city of Munising on the South Bay of Grand Island Harbor on Lake Superior.
The river rises in the Anna Marsh[3] in eastern Au Train Township at 46°24′40″N 86°38′26″W / 46.41111°N 86.64056°W / 46.41111; -86.64056 (Anna River (source)).[1] It flows first to the southeast, then turns mostly east and receives the outflow from Mud Lake and the Valley Spur Creek. It is joined by Wagner Creek near the Wagner Falls Scenic Site and turns to the north into the city of Munising. Portions of the river run through the Hiawatha National Forest.
Several waterfalls in the river's watershed are regional attractions (in order from the mouth inland):