Ottawa National Wildlife Refuge invited the public Wednesday to watch its release.
Metzger Marsh Wildlife Area found the adult female bird and discovered it had high levels of mercury in its blood.
WATCH: Raw video of the release
Typical wingspans can measure between six to seven feet.
The Bald Eagle was removed under the "threatened" category on the federal government's list by the U.S. Fish & Wildlife Service in June 2007.