The East Branch Union River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map , accessed June 22, 2011 river in Hancock County, Maine. From the outflow of Rocky Pond () in Maine Township 22 M D, the river runs southwest to Spectacle Pond in Osborn. From the pond's outlet, the river runs northwest, southwest, west and southwest to Graham Lake, where it joins the West Branch to form the Union River. The lower section of the East Branch forms the border between Mariaville and Waltham.
See also List of rivers of Maine
References
Maine Streamflow Data from the USGS Maine Watershed Data From Environmental Protection Agency