Lower portions of the Au Sable River between Alcona Pond and Foote Dam.

Ornithological Summary

The lower Au Sable River is home to Michigan's largest non-breeding associations of the interior population of the Trumpeter Swan, which has been reintroduced to Michigan. Winter counts from ice-free portions of the waterway range from 50 to 160 individuals.

Conservation Issues

Few threats, although continuous disturbance of flocks (including shooting) is a potential threat.


Public ownership of the river. Consumer's Energy owns the dams and hydroelectric facilities.


River and associated floodings.

Land Use

Industrial hydroelectric plants have created floodings and maintain open water areas throughout the winter due to high flow levels and warm water outflow. Other primary uses of the river are recreational including canoeing and fishing.

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