Fishwerks (3 of 3) (IMAGE) University of Wisconsin-Madison Caption The Two Hearted River, in Michigan's Upper Peninsula. Restoration efforts in the Two Hearted River Watershed include the removal of impassable road culverts to restore aquatic ecosystem connectivity. Credit Drew Kelly for The Nature Conservancy Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.